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Official Documentation

136 direct links to official docs — for every language, framework, database, hosting platform and tool in the Developer Hub. No aggregator sites, no stale mirrors — straight to the source, grouped by category.

Frontend

Trending

Vite

A fast frontend build tool that uses native ES modules for near-instant dev server startup and hot module replacement.

Frontend
Free
Open Source
build-toolbundlerdev-serveresm
Official site Docs

Webpack

A highly configurable module bundler for JavaScript applications, long the standard choice for production frontend builds.

Frontend
Free
Open Source
bundlerbuild-toolmodulesconfiguration
Official site Docs
New

Turbopack

A Rust-based incremental bundler from the Next.js team, built as a much faster successor to Webpack.

Frontend
Free
Open Source
bundlerrustbuild-toolincremental
Official site Docs

ESLint

A pluggable static analysis tool that finds and fixes problems in JavaScript and TypeScript code according to configurable rules.

Frontend
Free
Open Source
lintingcode-qualityjavascriptstatic-analysis
Official site Docs

Prettier

An opinionated code formatter that enforces a consistent style automatically across JavaScript, CSS, and many other languages.

Frontend
Free
Open Source
formattingcode-stylejavascriptcss
Official site Docs
Trending

Biome

A single fast, Rust-based toolchain that combines linting and formatting for JavaScript, TypeScript, JSX and JSON in one binary, aimed at replacing separate ESLint and Prettier setups.

Frontend
Free
Open Source
lintingformattingrusttoolchain
Official site Docs

Rollup

An ES-module-native bundler known for producing smaller, cleaner output than many alternatives — the bundler underneath several popular build tools, including Vite's production build.

Frontend
Free
Open Source
bundleresmbuild-tooltree-shaking
Official site Docs

Parcel

A zero-configuration web application bundler that auto-detects the right build pipeline for your project's file types with no config file required to get started.

Frontend
Free
Open Source
bundlerzero-configbuild-tool
Official site Docs

Backend

Node.js

A JavaScript runtime built on Chrome's V8 engine, letting developers write server-side code in the same language used in the browser.

Backend
Free
Open Source
javascriptruntimeserver
Official site Docs

Laravel

A PHP framework with expressive syntax and built-in tooling for routing, ORM, queues, and authentication, aimed at rapid full-stack development.

Backend
Free
Open Source
phpframeworkmvc
Official site Docs

Django

A batteries-included Python web framework that emphasizes fast development with a built-in ORM, admin panel, and security defaults.

Backend
Free
Open Source
pythonframeworkorm
Official site Docs

Ruby on Rails

A convention-over-configuration web framework for Ruby that popularized fast, opinionated scaffolding for database-backed applications.

Backend
Free
Open Source
rubyframeworkmvc
Official site Docs

NestJS

A structured Node.js framework layered on Express or Fastify, bringing Angular-style modules and dependency injection to backend development.

Backend
Free
Open Source
nodetypescriptframework
Official site Docs

Go Fiber

An Express-inspired web framework for Go built on the fasthttp engine, favoring low overhead and a familiar routing API.

Backend
Free
Open Source
goframeworkperformance
Official site Docs

Frameworks

Popular

React

A component-based JavaScript library from Meta for building user interfaces out of reusable, composable pieces.

Frameworks
Free
Open Source
uicomponentsjsxspa
Official site Docs
Trending

Next.js

A React framework from Vercel that adds server rendering, routing, and full-stack conventions on top of React.

Frameworks
Free
Open Source
reactssrfullstackrouting
Official site Docs
Popular

Vue

An approachable progressive JavaScript framework for building UIs, known for its gentle learning curve and single-file components.

Frameworks
Free
Open Source
uicomponentsspaprogressive
Official site Docs

Angular

A full-featured, opinionated TypeScript framework from Google for building large-scale enterprise web applications.

Frameworks
Free
Open Source
typescriptenterprisespacomponents
Official site Docs
Trending

Svelte

A framework that shifts work to compile time, producing highly optimized vanilla JavaScript instead of shipping a runtime library.

Frameworks
Free
Open Source
compilerreactivecomponentslightweight
Official site Docs
Trending

Astro

A content-focused web framework built around shipping minimal JavaScript by default, with an islands architecture for interactivity.

Frameworks
Free
Open Source
static-siteislandscontentperformance
Official site Docs

SolidJS

A declarative UI library that combines a React-like component model with fine-grained reactivity and no virtual DOM.

Frameworks
Free
Open Source
reactivecomponentsperformancejsx
Official site Docs

Languages

Trending

TypeScript

A statically typed superset of JavaScript from Microsoft that compiles to plain JS, catching type errors before runtime.

Languages
Free
Open Source
typedjavascriptcompilerstatic-typing
Official site Docs
Popular

Python

A general-purpose, readable language widely used for backend web development, data science, automation and scripting.

Languages
Free
Open Source
backendscriptingdata-sciencegeneral-purpose
Official site Docs
Trending

Go

A statically typed, compiled language from Google built for simplicity and performance, popular for backend services and CLI tools.

Languages
Free
Open Source
backendcompiledconcurrencygoogle
Official site Docs

Databases

MySQL

A widely deployed open-source relational database known for reliability and broad hosting support, with an optional paid enterprise edition.

Databases
Freemium
Open Source
sqlrelationaldatabase
Official site Docs

PostgreSQL

An advanced open-source relational database praised for standards compliance, extensibility, and strong support for complex queries and data types.

Databases
Free
Open Source
sqlrelationaldatabase
Official site Docs

MongoDB

A document-oriented NoSQL database storing flexible JSON-like records, available self-hosted or as the managed Atlas cloud service.

Databases
Freemium
Open Source
nosqldocumentdatabase
Official site Docs

Redis

An in-memory key-value store used for caching, queues, and pub/sub, valued for its speed and simple data structure commands.

Databases
Freemium
Open Source
cachein-memorykey-value
Official site Docs

Firebase

Google's hosted backend platform whose Firestore and Realtime Database offer schemaless, realtime-synced data storage for web and mobile apps.

Databases
Freemium
nosqlrealtimebaas
Official site Docs
Trending

Supabase

A hosted backend platform built around PostgreSQL, bundling auth, storage, and realtime subscriptions as an open-source-inspired Firebase alternative.

Databases
Freemium
postgresbaasbackend
Official site Docs
New

Neon

A serverless Postgres platform that separates storage and compute, enabling instant database branching and scale-to-zero for dev workflows.

Databases
Freemium
postgresserverlessdatabase
Official site Docs

PlanetScale

A managed MySQL-compatible database platform built on Vitess, offering non-blocking schema changes and branch-based workflows for teams.

Databases
Freemium
mysqlserverlessdatabase
Official site Docs

SQLite

A self-contained, serverless SQL database engine that reads and writes directly to a single file, common in mobile apps and local tooling.

Databases
Free
Open Source
sqlembeddeddatabase
Official site Docs

Hosting

GitHub Pages

Free static site hosting served directly from a GitHub repository, commonly used for project docs, portfolios, and simple landing pages.

Hosting
Free
static-hostinggithubfree
Official site Docs

Firebase Hosting

Google's static and single-page-app hosting service, integrated with the rest of the Firebase suite and fronted by a global CDN.

Hosting
Freemium
static-hostingcdnfirebase
Official site Docs

Cloudflare

A global CDN, DNS, and edge network provider that speeds up and protects websites, with hosting and security products layered on top.

Hosting
Freemium
cdndnssecurity
Official site Docs

Hostinger

A budget shared, WordPress and VPS hosting provider aimed at solo developers and small sites, with a free domain and SSL bundled into longer-term plans.

Hosting
Paid
shared-hostingvpswordpressbudget
Official site Docs

Version Control

Git

The distributed version control system underlying nearly all modern source control workflows, tracking history locally without a central server requirement.

Version Control
Free
Open Source
vcsdistributedcli
Official site Docs

GitHub

The most widely used git hosting platform, adding pull requests, issues, Actions CI/CD, and social discovery on top of git.

Version Control
Freemium
githostingci-cd
Official site Docs

GitLab

A git hosting platform bundling source control, CI/CD pipelines, and project planning into one integrated DevOps tool.

Version Control
Freemium
githostingdevops
Official site Docs

Package Managers

npm

The default package manager for Node.js, bundling both the CLI and the world's largest JavaScript package registry.

Package Managers
Free
Open Source
noderegistrycli
Official site Docs

Yarn

A package manager for JavaScript created as a faster, more deterministic alternative to early npm, now offering workspaces and Plug'n'Play installs.

Package Managers
Free
Open Source
nodeworkspacescli
Official site Docs
Trending

Bun

An all-in-one JavaScript runtime and package manager written for speed, bundling an installer, bundler, and test runner alongside its runtime.

Package Managers
Free
Open Source
javascriptruntimecli
Official site Docs

Composer

The dependency manager for PHP, resolving and installing per-project libraries listed in a composer.json manifest.

Package Managers
Free
Open Source
phpdependenciescli
Official site Docs

Poetry

A Python dependency and packaging manager that resolves versions deterministically via a lockfile and handles building and publishing packages, replacing the older pip + setup.py + virtualenv combination for many projects.

Package Managers
Free
Open Source
pythondependency-managementpackaginglockfile
Official site Docs

UI Kits

Material UI

A comprehensive React component library implementing Google's Material Design system, with theming and enterprise support options.

UI Kits
Freemium
reactmaterial-designcomponentstheming
Official site Docs

Chakra UI

A React component library focused on accessibility and developer ergonomics, with a composable styling system.

UI Kits
Free
Open Source
reactaccessibilitycomponentstheming
Official site Docs
Trending

Shadcn UI

A collection of copy-in, Radix-based React components styled with Tailwind CSS that you own and customize directly in your codebase.

UI Kits
Free
Open Source
reacttailwindradixcomponents
Official site Docs

Mantine

A full-featured React component library with over a hundred components and hooks, including built-in dark mode support.

UI Kits
Free
Open Source
reactcomponentshooksdark-mode
Official site Docs

Ant Design

An enterprise-oriented React design system from Alibaba, providing a large set of polished, data-dense components.

UI Kits
Free
Open Source
reactenterprisecomponentsdesign-system
Official site Docs
Popular

Radix UI

Unstyled, accessible component primitives (dialogs, dropdowns, popovers and more) that other design systems, including shadcn/ui, are built on top of.

UI Kits
Free
Open Source
headlessaccessibilityprimitivesunstyled
Official site Docs
Popular

DaisyUI

A Tailwind CSS plugin that adds semantic component class names (btn, card, modal) with built-in themes, so you write markup instead of stacking utility classes for every component.

UI Kits
Freemium
Open Source
tailwindcss-onlythemescomponents
Official site Docs

CSS Libraries

Popular

Tailwind CSS

A utility-first CSS framework that lets developers build custom designs directly in markup without writing separate stylesheets.

CSS Libraries
Free
Open Source
utility-firstcssstylingresponsive
Official site Docs

Bootstrap

One of the earliest and most widely adopted CSS frameworks, offering a grid system and prebuilt components out of the box.

CSS Libraries
Free
Open Source
cssgridcomponentsresponsive
Official site Docs

Bulma

A modern CSS framework based on Flexbox that provides responsive layout and styling classes without any JavaScript dependency.

CSS Libraries
Free
Open Source
cssflexboxresponsiveno-js
Official site Docs

Open Props

A set of ready-to-use, well-considered CSS custom properties — colors, easings, shadows, gradients — for styling without a full utility framework or build step.

CSS Libraries
Free
Open Source
css-variablesdesign-tokenslightweightno-build
Official site Docs

Icons

Popular

Lucide

A community-maintained fork of Feather Icons offering a large, consistent set of SVG icons with first-class React, Vue, and Svelte packages.

Icons
Free
Open Source
iconssvgreactopen-source
Official site Docs
Popular

Font Awesome

One of the longest-running icon toolkits on the web, combining a large free set with paid Pro packs and extra icon styles.

Icons
Freemium
iconswebfontsvg
Official site Docs

Material Symbols

Google's variable icon set built around Material Design, adjustable for weight, fill, and optical size in a single font file.

Icons
Free
Open Source
iconsmaterial-designvariable-font
Official site Docs

Animations

LottieFiles

A hub for browsing, editing, and exporting Lottie animations, with a huge community marketplace of free and paid files.

Animations
Freemium
animationlottiejson
Official site Docs
Popular

Framer Motion

A production-ready animation library for React that has since been rebranded and merged into the broader Motion project at motion.dev.

Animations
Free
Open Source
animationreactgestures
Official site Docs

GSAP

A high-performance, framework-agnostic animation engine widely used for complex timelines, scroll effects, and SVG animation.

Animations
Free
animationjavascripttimelines
Official site Docs

Motion One

A lightweight, dependency-free animation engine built on the Web Animations API, now developed alongside Framer Motion under the unified Motion brand.

Animations
Free
Open Source
animationjavascriptwaapi
Official site Docs

Anime.js

A compact JavaScript animation library with a simple API for animating CSS properties, SVG, and DOM attributes together.

Animations
Free
Open Source
animationjavascriptsvg
Official site Docs

Rive

A real-time interactive animation tool and runtime — design animations in its editor, then run them natively in web, mobile or game apps.

Animations
Freemium
interactiveruntimedesign-tool
Official site Docs

AutoAnimate

A zero-config animation utility you drop onto an existing parent element to get smooth add/remove/reorder transitions, without writing keyframes or wiring up a full animation library.

Animations
Free
Open Source
animationzero-configreactvue
Official site Docs

Charts

Popular

Chart.js

A canvas-based charting library covering the common chart types, valued for its small footprint and simple configuration API.

Charts
Free
Open Source
chartscanvasjavascript
Official site Docs

Recharts

A composable charting library built on React and D3, letting developers assemble charts from declarative components.

Charts
Free
Open Source
chartsreactd3
Official site Docs

Apache ECharts

A feature-rich charting engine handling everything from basic charts to geo maps and large-scale data, backed by the Apache Software Foundation.

Charts
Free
Open Source
chartscanvasdata-visualization
Official site Docs

ApexCharts

An SVG-based charting library with interactive, animated charts and framework wrappers for React, Vue, and Angular.

Charts
Free
Open Source
chartssvginteractive
Official site Docs
Popular

D3.js

A low-level JavaScript library for binding data to the DOM and building fully custom, highly interactive data visualizations.

Charts
Free
Open Source
data-vizsvgcustom-chartsjavascript
Official site Docs

visx

Airbnb's collection of low-level, unopinionated visualization primitives that combine D3's math with React's rendering, for teams that want full control over a custom chart rather than a pre-styled chart component.

Charts
Free
Open Source
reactd3data-visualizationlow-level
Official site Docs

Plotly.js

A high-level, declarative charting library with strong support for scientific and statistical chart types (3D surfaces, contour plots, box plots) that most everyday chart libraries don't cover out of the box.

Charts
Free
Open Source
chartsdata-visualizationscientificd3-based
Official site Docs

Authentication

Auth.js

An open-source authentication library for JavaScript apps, formerly NextAuth.js, supporting OAuth, email, and credentials-based flows.

Authentication
Free
Open Source
authenticationoauthsessions
Official site Docs

Clerk

A hosted authentication and user-management platform offering prebuilt UI components alongside a generous free tier.

Authentication
Freemium
authenticationuser-managementsso
Official site Docs

Firebase Authentication

Google's managed authentication service supporting email, phone, and federated sign-in, integrated tightly with the rest of Firebase.

Authentication
Freemium
authenticationfirebaseoauth
Official site Docs

Supabase Auth

The authentication layer of Supabase, providing email, OAuth, and row-level-security-aware sessions on top of Postgres.

Authentication
Freemium
authenticationsupabasepostgres
Official site Docs
Popular

Auth0

An enterprise-grade identity platform offering configurable login flows, SSO, and extensive compliance features for larger applications.

Authentication
Freemium
authenticationssoidentity
Official site Docs

Keycloak

An open-source identity and access management server with single sign-on, social login and standards-based protocols, self-hostable for full control over your auth stack.

Authentication
Free
Open Source
ssoiamself-hostedoidc
Official site Docs

WorkOS

Enterprise-readiness APIs for SaaS apps — SSO (SAML/OIDC), SCIM directory sync and audit logs that plug into an existing auth setup instead of replacing it, aimed at teams selling to enterprise customers.

Authentication
Freemium
ssosamlscimenterprise-auth
Official site Docs

Ory

An open-source identity and access-management stack (Kratos for identity, Hydra for OAuth2/OIDC, Keto for permissions) that can be self-hosted or used as a managed cloud service.

Authentication
Freemium
Open Source
identityoauth2oidcopen-source
Official site Docs

CMS

Sanity

A headless CMS built around a structured content API and a customizable, React-based editing studio.

CMS
Freemium
cmsheadlessstructured-content
Official site Docs

Strapi

An open-source, self-hostable headless CMS with a customizable admin panel and a paid managed cloud option.

CMS
Freemium
cmsheadlessself-hosted
Official site Docs

Contentful

A hosted headless CMS built for large content teams, offering structured content modeling and a multi-space workflow.

CMS
Freemium
cmsheadlesscontent-modeling
Official site Docs

Hygraph

A GraphQL-native headless CMS, formerly GraphCMS, built around federated content and multi-source schema stitching.

CMS
Freemium
cmsheadlessgraphql
Official site Docs

Directus

An open-source data platform that wraps an existing SQL database with an instant REST/GraphQL API and an admin app.

CMS
Freemium
cmsheadlessself-hosted
Official site Docs
Popular

WordPress

The long-standing open-source publishing platform behind a large share of the web, self-hostable with a vast plugin and theme ecosystem.

CMS
Free
Open Source
cmsself-hostedblogging
Official site Docs

Payload CMS

A TypeScript-native, self-hostable headless CMS where content models, admin UI and API are all defined in code rather than a separate visual builder.

CMS
Freemium
Open Source
headless-cmstypescriptself-hostedopen-source
Official site Docs

Ghost

An open-source publishing platform built specifically for blogging and newsletters, with built-in memberships, subscriptions and email newsletter delivery rather than a general-purpose page builder.

CMS
Freemium
Open Source
cmsbloggingnewsletterself-hosted
Official site Docs

Testing

Popular

Playwright

Cross-browser end-to-end testing framework from Microsoft that automates Chromium, Firefox, and WebKit with a single API.

Testing
Free
Open Source
e2ebrowser-automationtesting
Official site Docs

Cypress

Developer-friendly end-to-end testing tool that runs directly in the browser for fast, debuggable test execution.

Testing
Free
Open Source
e2etestingbrowser
Official site Docs

Jest

Widely used JavaScript test runner with built-in assertions, mocking, and snapshot testing out of the box.

Testing
Free
Open Source
unit-testingjavascripttest-runner
Official site Docs
Trending

Vitest

Vite-native unit test framework offering near-instant watch mode and a Jest-compatible API.

Testing
Free
Open Source
unit-testingvitetest-runner
Official site Docs

Postman

API client for building, testing, and sharing HTTP requests, with collections and automated test scripts.

Testing
Freemium
api-testingrestcollaboration
Official site Docs

Insomnia

Lightweight REST and GraphQL client focused on a clean interface for organizing and running API requests.

Testing
Freemium
Open Source
api-testinggraphqlrest
Official site Docs

k6

A developer-centric load and performance testing tool, scripted in JavaScript, for finding out how an API or app behaves under real traffic before users do.

Testing
Freemium
Open Source
load-testingperformanceapi-testingopen-source
Official site Docs

Testing Library

A family of DOM-testing utilities (React, Vue, Angular and more) that encourages writing tests around how users actually interact with your app, rather than its internal implementation details.

Testing
Free
Open Source
unit-testingdom-testingreactaccessibility
Official site Docs

Performance

Popular

Lighthouse

Automated auditing tool from Google that scores pages on performance, accessibility, SEO, and best practices.

Performance
Free
Open Source
auditingperformancechrome
Official site Docs

WebPageTest

Runs real-browser performance tests from multiple global locations and connection speeds with detailed waterfall breakdowns.

Performance
Freemium
Open Source
performancewaterfallreal-device-testing
Official site Docs

sitespeed.io

An open-source command-line toolset that runs real browser-based performance tests and Core Web Vitals tracking, built for self-hosting instead of relying on a hosted dashboard.

Performance
Free
Open Source
performancecore-web-vitalsself-hostedcli
Official site Docs
New

Unlighthouse

Crawls an entire site and runs a Lighthouse audit on every discovered page at once, instead of testing one URL at a time.

Performance
Free
Open Source
lighthousesite-wideauditingcli
Official site Docs

API Tools

Popular

Swagger / OpenAPI

Tooling ecosystem built around the OpenAPI Specification for designing, documenting, and generating clients for REST APIs.

API Tools
Freemium
Open Source
api-docsopenapispec
Official site Docs

GraphQL

Query language for APIs that lets clients request exactly the data they need from a single endpoint.

API Tools
Free
Open Source
query-languageapischema
Official site Docs

Hoppscotch

Open-source, browser-based API request builder supporting REST, GraphQL, and WebSocket testing.

API Tools
Freemium
Open Source
api-testingrestgraphql
Official site Docs

Deployment

Popular

Vercel

A deployment platform built around Next.js and frontend frameworks, offering git-connected builds, previews, and edge functions.

Deployment
Freemium
frontendserverlessci-cd
Official site Docs

Netlify

A static and JAMstack deployment platform with git-based builds, serverless functions, and preview deploys for every pull request.

Deployment
Freemium
jamstackstatic-hostingci-cd
Official site Docs

Cloudflare Pages

Cloudflare's git-connected static site and full-stack deployment product, built to run on the same edge network as its CDN.

Deployment
Freemium
edgestatic-hostingci-cd
Official site Docs

Railway

A deployment platform for backend services and databases that provisions infrastructure from a git repo with minimal configuration.

Deployment
Freemium
backendpaascontainers
Official site Docs

Render

A unified cloud platform for hosting web services, static sites, background workers, and databases with automatic deploys from git.

Deployment
Freemium
paasbackendci-cd
Official site Docs

Fly.io

A platform for running full applications as lightweight VMs close to users across a distributed set of global regions.

Deployment
Freemium
edgevmsbackend
Official site Docs

AWS Amplify

A full-stack platform for building and deploying web/mobile apps on AWS, bundling hosting, CI/CD, auth and backend resources behind one CLI and console.

Deployment
Freemium
awsfull-stackci-cdhosting
Official site Docs

Cloud

AWS

Amazon's cloud platform offering hundreds of on-demand infrastructure services, from compute and storage to managed databases and machine learning.

Cloud
Freemium
cloudinfrastructureiaas
Official site Docs

Microsoft Azure

Microsoft's cloud computing platform providing virtual machines, managed services, and deep integration with the .NET and Windows ecosystem.

Cloud
Freemium
cloudinfrastructuremicrosoft
Official site Docs

Google Cloud

Google's cloud platform spanning compute, storage, and data analytics services, notable for BigQuery and Kubernetes-native tooling.

Cloud
Freemium
cloudinfrastructuregcp
Official site Docs

DigitalOcean

A developer-friendly cloud provider known for straightforward pricing and simple virtual machines called Droplets, plus managed databases and Kubernetes.

Cloud
Freemium
cloudvpsinfrastructure
Official site Docs

Hetzner Cloud

A German cloud provider known for notably low per-hour VM pricing and European data centers, a common pick for indie developers and small teams running their own infrastructure.

Cloud
Paid
vpscloudcomputeeurope
Official site Docs

Monitoring

Popular

Sentry

Application monitoring platform that captures errors and performance traces with full stack context for faster debugging.

Monitoring
Freemium
Open Source
error-trackingapmlogging
Official site Docs

Better Stack

Unified uptime monitoring, log management, and incident alerting platform for keeping production systems observable.

Monitoring
Freemium
uptimeloggingalerting
Official site Docs

LogRocket

Session replay and monitoring tool that reconstructs user sessions alongside errors and performance metrics.

Monitoring
Freemium
session-replaymonitoringfrontend
Official site Docs

Plausible

Privacy-focused, cookieless website analytics with a lightweight script and a simple, no-clutter dashboard.

Monitoring
Paid
Open Source
privacy-analyticscookielesslightweight
Official site Docs
Popular

Grafana

An open-source dashboarding and observability platform for visualizing metrics, logs and traces from almost any data source.

Monitoring
Freemium
Open Source
dashboardsobservabilityopen-sourcemetrics
Official site Docs

Datadog

A unified observability platform combining infrastructure metrics, log management, APM traces and real-user monitoring in one dashboard.

Monitoring
Freemium
observabilityapminfrastructurelogs
Official site Docs

New Relic

A full-stack observability platform combining APM, infrastructure monitoring, logs and distributed tracing in one place, with a perpetual free tier for a single full-access seat.

Monitoring
Freemium
apmobservabilitytracinginfrastructure-monitoring
Official site Docs

Checkly

Synthetic monitoring and uptime checks written as code (Playwright-based browser checks plus API checks), built for teams that already treat their infrastructure as code.

Monitoring
Freemium
uptimesynthetic-monitoringplaywrightapi-monitoring
Official site Docs

Security

Snyk

Developer-focused security platform that scans dependencies, containers, and code for known vulnerabilities.

Security
Freemium
vulnerability-scanningdependenciessca
Official site Docs

OWASP ZAP

Open-source web application scanner for finding vulnerabilities through automated and manual penetration testing.

Security
Free
Open Source
penetration-testingweb-securityscanner
Official site Docs

Have I Been Pwned

Lets anyone check whether an email address or password has appeared in a known data breach.

Security
Free
breach-checkdata-leakcredentials
Official site Docs

Let's Encrypt

Nonprofit certificate authority issuing free, automated TLS certificates to secure websites.

Security
Free
Open Source
tlscertificateshttps
Official site Docs

DevOps

Popular

Docker

Packages applications and their dependencies into portable containers that run consistently across environments.

DevOps
Free
Open Source
containersimagesdevops
Official site Docs

Kubernetes

Container orchestration system for automating deployment, scaling, and management of containerized workloads.

DevOps
Free
Open Source
orchestrationcontainersscaling
Official site Docs

GitHub Actions

CI/CD automation built into GitHub for running workflows on pushes, pull requests, and other repository events.

DevOps
Freemium
ci-cdautomationgithub
Official site Docs

Jenkins

Self-hosted automation server for building, testing, and deploying software through configurable pipelines.

DevOps
Free
Open Source
ci-cdpipelinesself-hosted
Official site Docs

Terraform

Infrastructure-as-code tool that lets teams define and provision cloud resources using a declarative configuration language.

DevOps
Free
Open Source
iacprovisioningcloud
Official site Docs

Ansible

Agentless automation tool for configuration management, application deployment, and orchestration using YAML playbooks.

DevOps
Free
Open Source
configuration-managementautomationyaml
Official site Docs

Pulumi

An infrastructure-as-code tool that lets you define cloud resources in a real programming language (TypeScript, Python, Go) instead of a domain-specific config format, with state management handled by Pulumi Cloud or your own backend.

DevOps
Freemium
iaccloudtypescriptautomation
Official site Docs

CircleCI

A hosted CI/CD platform for building, testing and deploying code on every push, with a config-as-code YAML pipeline definition and a generous free tier for smaller projects.

DevOps
Freemium
ci-cdautomationpipelinestesting
Official site Docs