Open source
TanStack Router
Type-safe React router with URL-based search state and preloading
Frameworks & LibrariesType-safe React router
Development
Frameworks, databases, APIs, testing, security and the everyday tools developers use.
8 sections · 982 tools
Frontend Development
Frameworks, UI component libraries, animation libraries and build tools for the front end.
Open source
Angular Material
Material Design component library built by the Angular team
UI Components & StylingMaterial UI for Angular
Open source
AutoAnimate
Smooth transitions for added, removed and moved elements
Animations & InteractionsOne line transition animations
Open source
Bits UI
Headless, unstyled accessible components for Svelte
UI Components & StylingHeadless components for Svelte
Open source
Backend & APIs
Backend frameworks, authentication, backend services, and tools for building and testing APIs.
Open source
Sinatra
Lightweight Ruby framework for building web apps and APIs
Backend FrameworksTiny Ruby DSL framework
Curated
Treblle
Platform for monitoring and governing API traffic and design
API Development ToolsAPI intelligence platform
Freemium
Freemium
DocRaptor
HTML to PDF API that renders pages with the Prince PDF engine
Backend ServicesHTML to PDF API
Freemium
Formspree
Form backend that receives and handles submissions from static sites
Backend ServicesForm backend for static sites
Mobile Development
Frameworks, UI kits, testing and services for building Android, iOS and cross-platform apps.
Curated
Airship
Mobile-first customer experience and messaging platform
Mobile Services & GrowthMobile engagement platform
Curated
Cocos
Game engine and toolchain for 2D and 3D content
Cross-Platform Development2D and 3D mobile game engine
Curated
Courier
Notification API for sending messages across channels
Mobile Services & GrowthNotification API and routing
Free trial
Customer.io
Customer engagement platform for messages across channels
Mobile Services & GrowthAutomated messages for apps
Free
Defold
Free, small engine for 2D and 3D cross-platform games
Cross-Platform DevelopmentFree lightweight game engine
Databases & Data
Databases, database tools and migration tooling, from SQL and NoSQL to caches and search.
Free trial
Azure Cosmos DB
Fully managed serverless NoSQL database with built-in vector search
DatabasesGlobal multi model database
Freemium
Convex
Reactive TypeScript backend with database, functions and file storage
DatabasesReactive TypeScript backend
Freemium
dbdiagram.io
Draw database ER diagrams by writing simple DBML code
Database Management ToolsDraw ER diagrams with code
Freemium
MongoDB Atlas
Managed MongoDB database service for apps, search and AI agents
DatabasesManaged MongoDB
Curated
Aiven
Managed open source databases, streaming and analytics on any cloud
DatabasesManaged open source data
Developer Tools
Code editors, terminals, command-line tools and everyday utilities for developers.
Open source
IT Tools
Free collection of online tools for developers and IT work
Code UtilitiesHandy tools for developers
Freemium
JSFiddle
Online playground for testing HTML, CSS, JavaScript and frameworks
Code UtilitiesClassic front end sandbox
Open source
JSON Crack
Visualize JSON, YAML, CSV and XML as interactive graphs
Code UtilitiesVisualize JSON as graphs
Open source
massCode
Free open source workspace for snippets, notes and API requests
Code UtilitiesOpen source snippet manager
Open source
quicktype
Generates typed models from JSON, JSON Schema and GraphQL
Code UtilitiesJSON to types generator
Testing & Security
Testing frameworks, debugging and performance tools, and security scanners and services.
Freemium
Mockaroo
Generate realistic test data as CSV, JSON, SQL or Excel
Testing ToolsRealistic test data generator
Free
Let's Encrypt
Free, automated TLS certificates to enable HTTPS on your sites
Security ToolsFree HTTPS certificates
Open source
mitmproxy
Free interactive HTTPS proxy to inspect and modify web traffic
Debugging & PerformanceInteractive HTTPS proxy
Free trial
Charles Proxy
HTTP proxy for viewing and debugging web and mobile traffic
Debugging & PerformanceHTTP debugging proxy
Open source
GoAccess
Open source real-time web server log analyzer with live dashboards
Debugging & PerformanceReal time web log analyzer
DevOps & Git
Git tools and hosting, CI/CD and automation, containers and infrastructure.
Free trial
Chef
Infrastructure automation and compliance for enterprise IT
Containers & InfrastructureInfrastructure automation
Freemium
Codemagic
Hosted CI/CD for building and releasing mobile apps
CI/CD & AutomationCI/CD for Flutter and mobile
Open source
Fossil
Distributed version control with built-in wiki and issue tracker
Git & Version ControlVCS with wiki and tickets
Curated
PullApprove
Code review approval rules defined in a config file
CI/CD & AutomationCode owner review rules
Free
Sourcetree
Free Git client for Windows and Mac with a visual interface
Git & Version ControlFree Git GUI by Atlassian
Documentation
Documentation generators and platforms, diagramming, screen capture and product demo tools.
Open source
Free trial
Kapa.ai
AI assistant that answers questions from docs and past tickets
Search and AIAI assistant for docs
Curated
Arcade
AI video platform for product launch videos, tutorials and demos
Product DemosInteractive demo creator
Open source
Asciidoctor
Fast text processor that converts AsciiDoc to HTML, PDF and more
Writing ToolsAsciiDoc toolchain
Open source
asciinema
Records terminal sessions as text you can replay and share
Screen CaptureRecord terminal sessions