Developer Tools
Collection of open-source useful developer tools, converters, encoders, and generators running entirely client-side in the browser.
A growing collection of free, client-side developer, text, and productivity tools that run entirely in your browser with zero data tracking.
A collection of client-side developer and utility tools that run entirely in the browser without sending files or data to any external server.
A repository of over 1000 free website templates across 20+ categories, including business, portfolio, ecommerce, and admin dashboards.
A production-grade Next.js SaaS starter kit featuring authentication, billing, multi-tenancy, and AI integration to accelerate development.
Production-ready Next.js boilerplate for AI SaaS, featuring auth, payments, vector storage, analytics, and 8 pre-built AI application templates.
A centralized marketplace and discovery platform for finding, testing, and connecting to third-party APIs.
Google Cloud’s native API management platform to build, manage, and secure APIs across any environment or scale.
A Flutter boilerplate for production mobile apps featuring automated Firebase or Supabase setup, authentication, subscriptions, and CI/CD pipelines.
An online assembly language editor supporting M68K, MIPS, RISC-V, X86, and Z80 with debugging tools, code completion, and integrated AI chat.
Web-based tool to explore the abstract syntax trees of source code parsed by various community parsers.
A curated collection of free and premium templates and boilerplate themes designed specifically for the Astro web framework.
Curated list of awesome examples, apps, components, and tools built with SvelteKit in the wild.
Fast badge generating service for software projects and documentation.
Git-based source code hosting platform with integrated CI/CD pipelines, issue tracking, security scanning, and AI-powered development tools.
A curated directory of vetted SaaS boilerplates and starter kits across various tech stacks to accelerate product development.
A curated directory of production-ready starter kits and boilerplates for SaaS, web, and mobile application development.
A web-based Spring Boot project generator that creates boilerplate code, database schemas, and REST APIs with support for various frontend stacks.
A collection of responsive, mobile-first Bootstrap website templates and admin dashboard themes for various industries and project types.
A curated collection of free and premium website templates and themes built using the Bootstrap framework.
A privacy-focused web browser that blocks third-party ads, trackers, and fingerprinting by default to improve speed and security.
A Git-native, local-first API client that stores collections as plain-text files directly within your project repository.
A browser-based tool to decode and inspect X.509 certificates in PEM format, extracting details like issuer, subject, and validity.
A CLI tool that enables natural language interaction with AWS infrastructure for cost analysis, security auditing, and troubleshooting.
A web browser built for developers to test cutting-edge web platform APIs and build for the open web with weekly updates.
A set of web developer tools built directly into the Google Chrome browser for editing pages on-the-fly and diagnosing problems quickly.
Visualizes GitHub repositories into interactive file dependency and function call graphs with AI-driven issue mapping.
An online social development environment for front-end designers and developers to build, test, and discover HTML, CSS, and JavaScript code snippets.
A comprehensive suite of browser-based developer utilities for code formatting, cryptography, data conversion, and system testing.
Cloud-based development environments and SDK for programmatic, isolated code execution and sandboxing.
A browser-based real-time collaborative code editor designed for pair programming, remote technical interviews, and educational instruction.
Live web development playground and code editor for HTML, CSS, and JavaScript with dependency management, console output, and layout customization.
A collection of free WordPress themes and responsive HTML website templates for various niches.
Browser extension providing an eyedropper, color picker, and CSS gradient generator for web development.
A visual comparison tool that overlays design mockups onto live websites to identify discrepancies between design and implementation.
A debugging tool that displays console logs, runtime errors, and network requests directly in your code editor.
A specification for adding human and machine readable meaning to commit messages.
CLI tool to quickly bootstrap type-safe full-stack Next.js applications with pre-configured tools like Prisma, Tailwind CSS, and tRPC.
croc web: browser version of croc, the tool for transferring files and folders between computers with end-to-end encryption.
Collection of responsive website and dashboard templates built with Tailwind CSS, available in HTML, React, Next.js, and Vue.
Browser-based web application for modular conversion, encoding, and encryption without server interaction.
A web-based visual generator for creating custom CSS button styles with real-time preview and code export.
A browser extension to inspect, debug, and copy CSS rules of any element on a webpage with a single click.
Browser-based utility for analyzing, querying with SQL, diagnosing, and repairing broken CSV files online.
AI-powered code editor and coding agent built for software development, featuring autonomous agents, multi-model support, and terminal integration.
Web-based application for encryption, encoding, compression, and data analysis operations.
A personalized news aggregator and feed for software developers, available as a browser extension and mobile application.
An online editor for testing and running Dart and Flutter code directly in the web browser without local installation.
A multi-engine database IDE providing intelligent query consoles, code completion, on-the-fly analysis, and version control integration.
An AI-powered GitHub agent that automatically scans repositories to update documentation whenever code changes.
Manage local and cloud coding agents from a single IDE interface, coordinate multi-agent workflows, and streamline software development tasks.
A Next.js-based directory website template featuring admin dashboards, Stripe payment integration, and user authentication.
A Next.js boilerplate for building and launching directory websites with built-in monetization and architecture.
A React codebase generator that provides pre-configured stacks including authentication, database, payments, and UI components.
A dark color scheme available for over 400 applications, including code editors, terminals, and browsers.
Open-source, privacy-first diagramming application for teams and developers to create, embed, and collaborate on technical diagrams.
An open-source online database schema design and entity-relationship diagram tool that generates clean DDL scripts for major SQL dialects.
Write, validate, and visualize algorithms step-by-step with TypeScript support and real-time feedback.
A web-based tool that parses command-line strings and provides detailed explanations for each argument and flag based on manual pages.
An AI-powered research platform that indexes and analyzes company data from the live web based on custom criteria.
Extract website favicons in multiple formats and sizes by providing a domain or URL. Supports SVG, PNG, ICO, and Apple touch icons with API access.
A machine learning boilerplate for fine-tuning, deploying, and scaling AI models, including LLMs and text-to-image applications.
API to search, scrape, and interact with the live web at scale, turning messy websites into clean, token-efficient markdown for LLMs.
Web browser featuring integrated developer tools, CSS grid inspection, JavaScript debugging, and network monitoring capabilities.
A platform for building marketplaces and applications using a library of pre-built microapps to accelerate development.
An open source browser-based collection of developer utilities including JSON, XML, YAML, CSV and TOML formatters, validators, and encoders.
A browser-based toolkit for formatting, validating, minifying, and converting JSON data locally.
A form builder for shadcn/ui that generates production-ready, maintainable code with Zod validation and multi-step support.
A collection of free and premium website templates built using the Bootstrap framework.
A library of over 100 reusable UI blocks and templates for building landing pages using Bootstrap, featuring a copy-paste tool.
A clean and minimal alternative viewer for GitHub Gists with custom themes, URL parameters, and syntax highlighting.
Distributed version control system designed to handle everything from small to very large projects with speed and efficiency.
Documentation platform for creating, managing, and publishing technical knowledge bases with AI-powered search and synchronization features.
Cloud-based Git repository hosting service providing version control, collaborative code review, project management, and CI/CD automation tools.
A graphical user interface client for Git to streamline code management workflows and simplify version control interactions.
Open source courseware and reference materials for Git and GitHub, including multilingual cheat sheets and administrative manuals.
Git ecosystem providing visual desktop clients, IDE extensions, AI agent oversight, and engineering analytics to streamline developer workflows.
Comprehensive DevSecOps platform providing version control, continuous integration and delivery, application security testing, and agentic workflows.
Tool that reverse engineers codebases or websites into structured prompts for large language models.
An extensible, customizable, free, and open-source text editor and computing environment.
A collection of website templates, UI components, and design resources for Tailwind CSS, Bootstrap, and HTML.
A browser extension that aggregates developer news, tools, and conference updates from multiple sources into a single dashboard.
A private, client-side code formatter and minifier running entirely in the browser without uploading code.
Browser-based LLM tokenizer and token cost calculator for GPT, Claude, Kimi, Qwen, and GLM model families with client-side privacy.
An open-source API development ecosystem for testing, documenting, and managing REST, GraphQL, and WebSocket requests.
A collection of free, fully responsive site templates built with HTML5 and CSS3.
A curated directory of free HTML website templates and themes for developers.
An extensible, open-source command-line interface built on web standards, featuring plugin support and built with Electron and React.
A SaaS boilerplate featuring authentication, Stripe payments, Supabase integration, and pre-built UI components for rapid development.
An API design, testing, and debugging platform supporting REST, gRPC, GraphQL, and MCP with Git integration and automated CI/CD workflows.
Integrated development environment for Java and Kotlin, featuring deep code insight, refactoring tools, and integrated AI assistance.
Collection of handy online tools for developers, including cryptography, conversion, web, and network utilities.
Terminal emulator replacement for macOS with advanced features, split panes, search capabilities, and extensive customization options.
Search foundation and AI models for search relevance, embeddings, reranking, and URL-to-markdown reading.
Online code playground for testing and sharing HTML, CSS, JavaScript, and React snippets with support for external libraries and preprocessors.
Online tool to visualize, format, and convert JSON, YAML, CSV, and XML data into interactive graph trees.
Automated data agents that monitor websites and apps to extract structured competitive intelligence, pricing, and product data at scale.
A collection of tools and resources for working with JSON, JSONL, and JSONPath data formats.
JSON Web Tokens decoder, verifier, and generator tool for web applications.
A collection of over 130 responsive UI sections built with Tailwind CSS, available for HTML, Vue.js, and React projects.
A visual CSS Grid generator that allows users to interactively define grid layouts and export the corresponding HTML and CSS code.
Official developer portal for Microsoft Edge, providing documentation, browser tools, WebView2 SDKs, and resources for extension development.
Documentation and knowledge platform designed for developers and AI agents with self-updating capabilities.
Product intelligence and analytics platform featuring real-time user behavior tracking, session replay, experimentation, and AI-powered insights.
A Next.js directory boilerplate featuring AI-powered submissions, Stripe payments, authentication, and integrated Sanity CMS.
API mocking library for JavaScript using Service Workers to intercept REST and GraphQL requests for testing and development.
An online tool for generating synthetic test datasets in CSV, SQL, and JSON formats with customizable field schemas.
A subscription-based digital asset library offering unlimited downloads of website templates, plugins, graphics, video, audio, and 3D models.
Convert spreadsheet data from Excel or CSV formats into web-friendly formats including JSON, HTML, and XML.
Domain name discovery tool featuring AI-powered suggestions, real-time availability checking, and a command-line interface for developers.
Hyperextensible Vim-based text editor with built-in LSP client, first-class API, Lua plugin support, and asynchronous remote plugin architecture.
Production-ready UI components and templates built with Next.js, Tailwind CSS, TypeScript, and React for web applications.
A Next.js boilerplate featuring TypeScript, Prisma, authentication, payment integration, and admin dashboard components for rapid development.
An open-source Next.js boilerplate for building SaaS applications, featuring authentication, payments, database integration, and UI components.
Native macOS SSH client built with SwiftUI, featuring integrated terminal, SFTP, Docker management, live server monitoring, and an MCP server agent bridge.
A lightweight, open-source source code editor for Windows based on the Scintilla editing component.
Package manager and software registry for JavaScript, used to install, share, and manage project dependencies.
Web-based visualization tool for exploring and analyzing npm package dependency trees.
A comprehensive web collection of over 680 free, client-side developer, PDF, image, text, and calculator utilities requiring no sign-up.
A browser extension that adds an IDE-like file tree explorer and code navigation features to GitHub repositories.
An open source, community-driven framework for managing Zsh configurations with bundled plugins and themes.
An open-source collection of developer utilities and tools hosted on GitHub.
A comprehensive web-based collection of developer utilities for hashing, cryptography, compression, encoding, formatting, and text conversion.
A curated directory of open-source starter kits and boilerplates for web, mobile, and backend application development.
Collection of cinematic video background hero sections with source code in HTML, React, and Next.js.
An interactive, browser-based tutorial for learning Vim text editor commands and navigation.
A feature-rich web browser with built-in privacy tools, ad blocking, free VPN, and integrated AI capabilities.
Browser extension to overlay Figma designs onto live websites for pixel-perfect comparison and CSS inspection.
A collection of browser-based CSS generators for creating gradients, shadows, filters, transforms, borders, patterns, and grid layouts.
An open-source, code-first headless CMS and application framework built for Next.js, offering schema definition in code and flexible data management.
Interactive online playground and template gallery for pdfme, an open-source TypeScript PDF generation library.
Open-source code editor for web development, successor to Brackets, with live preview and inline editing, on desktop and in the browser.
A collection of online utilities designed to aid in PHP development and make coding smoother and more efficient.
Create UML and non-UML diagrams from plain text descriptions using a domain-specific language and layout engines like Graphviz.
A Chromium-based development browser featuring synchronized multi-viewport testing, accessibility auditing, device emulation, and debugging tools.
An API platform for developing, testing, managing, and distributing APIs and services with integrated AI capabilities.
A browser extension dashboard for pull requests across GitHub, GitLab, and Bitbucket, featuring CI status, code reviews, and desktop notifications.
Free online compilers for Python, JavaScript, SQL, C, and more, with programming tutorials and the paid Programiz PRO.
A JavaScript library providing a high-level API to control Chrome or Firefox over the DevTools Protocol or WebDriver BiDi.
Fast and convenient Python compiler and editor Chrome extension that lets you run and test Python code directly in your browser popup.
A collection of browser-based online tools and resources designed to assist Python developers with various coding tasks.
Generate QR codes directly from the command line using HTTP requests and curl.
A live scratchpad for JavaScript and TypeScript that runs code immediately as you type within your code editor.
RapidProxy provides over 90 million rotating and static residential IP addresses across more than 200 global regions for web scraping and data collection.
An extendable, keyboard-first productivity launcher for macOS, Windows, and iOS that integrates system commands, AI, and custom extensions.
Chrome DevTools extension for inspecting React component hierarchies, props, state, and performance profiling.
A web-based editor for creating and customizing project README files using a modular interface.
Online tool to build, test, and debug regular expressions with real-time explanations, match information, and quick reference guides.
Online tool to learn, build, and test Regular Expressions for JavaScript and PHP/PCRE with real-time results and reference documentation.
AI-powered platform for building, testing, and deploying applications and websites from text prompts with integrated hosting and databases.
BrowserStack's Git-native API client and HTTP interceptor for designing, testing, and debugging APIs and network requests.
Google Search API providing programmatic access to SERP results with a structured schema and 99.8 percent production success rate.
A developer tool that displays web pages across multiple devices simultaneously for responsive testing and layout verification.
A diff-based typing simulator and VS Code extension to replay code change steps easily.
AI-powered platform to build full-stack web and mobile apps from natural language prompts with automated backend and instant deployment.
Desktop JavaScript scratchpad that evaluates code as you type with support for Node.js, TypeScript, and npm packages.
Curated directory of SaaS boilerplates and starter kits categorized by tech stack, features, and payment integrations to accelerate software development.
An evaluation browser for Apple platforms providing early access to upcoming WebKit rendering engine features and web technologies.
API reference documentation and developer tool suite.
Production-ready AWS serverless kit containing frontend, backend, and infrastructure configuration for building scalable cloud applications.
Web scraping API and cloud browser infrastructure with automated proxy rotation, JavaScript rendering, and pay-on-success pricing model.
Web scraping API handling proxy rotation, headless browser rendering, and anti-bot defenses for reliable data extraction at scale.
A Python web scraping framework providing fast HTTP requests, stealth browsers, powerful parsing, concurrent crawling, and an MCP server for AI agents.
Website screenshot API that automatically strips cookie banners, chat widgets, and ads while supporting full-page rendering and custom viewports.
Scrape Google and other search engines from a fast and easy API.
A curated directory of 600+ Shadcn UI templates, components, blocks, and boilerplates for modern web development.
Clean logs, stack traces, config snippets, and terminal output locally to remove sensitive data before sharing.
Concise, consistent, and legible badge generator for software projects, documentation, and repositories supporting hundreds of external services.
A Next.js boilerplate providing pre-configured authentication, payment processing, transactional emails, and database connections for SaaS apps.
Next.js SaaS boilerplate with authentication, payments, database integration, UI components, and AI service connectors.
A specialized browser for web developers featuring simultaneous multi-device testing, synchronized interactions, and responsive CSS debugging tools.
API service for extracting social media transcripts, posts, profiles, and metrics across platforms like YouTube, TikTok, X, and LinkedIn.
Browser extension that adds folders, a prompt library, and cross-model chat transfer to ChatGPT, Claude, Gemini, and Grok.
Python integrated development environment designed for data analysis, scientific computing, and engineering workflows.
A collection of web-based utilities designed to simplify SQL database management, including formatters, validators, and data generators.
An open-source framework to build full-stack applications on AWS, Cloudflare, and other providers, with type-safe infrastructure and live development.
An online IDE and development environment running entirely in the browser via WebContainers, executing Node.js locally inside the tab.
Free bootstrap templates, themes, and code snippets for web developers.
A comprehensive Node.js boilerplate for building AI-powered SaaS applications and wrappers with integrated authentication, payments, and multi-model AI support.
Next.js boilerplate for SaaS startups providing pre-built authentication, payments, database integration, and UI components to accelerate product launches.
API design, documentation, and governance platform supporting OpenAPI specifications, collaborative development, and reusable components.
A collection of free responsive HTML website templates for personal websites, resumes, portfolios, and businesses.
Cross-platform source code editor featuring GPU rendering, tab multi-select, context-aware auto complete, and Python 3.8 API integration.
Production-ready Next.js SaaS boilerplate with pre-configured authentication, billing, database integrations, and multi-language support.
Static web publishing tool for front-end developers providing command-line deployment to a production-quality CDN.
A web-based tool to visually edit, transform, scale, rotate, and optimize SVG path data commands directly in the browser.
API development and design toolset supporting OpenAPI and AsyncAPI specifications for documentation, testing, and code generation.
Convert tabular data between CSV, HTML, JSON, and Markdown formats instantly online with local processing for enhanced privacy.
Collection of professionally designed UI components, website templates, and React UI kits built specifically for Tailwind CSS.
A collection of 620+ free HTML and CSS website templates, including responsive Bootstrap layouts and AI-customizable designs.
An online tool to design, edit, and preview color schemes for various terminal emulators.
Browser extension for testing and debugging RESTful APIs and HTTP endpoints locally.
Provider of fully coded admin dashboards, SaaS boilerplates, UI kits, and component libraries for faster web and application development.
A browser extension that displays console errors, warnings, logs, network requests, and SEO issues as on-page toast notifications in real-time.
Collection of browser-based utilities including password generators, text tools, color palettes, and JSON formatters.
Collection of free HTML and CSS website templates for landing pages, SaaS products, portfolios, and small business sites built with Bootstrap.
A web-based polyglot code and data transformation tool for converting between various formats such as JSON, TypeScript, GraphQL, CSS, and SVG.
Enterprise runtime intelligence platform for API discovery, observability, governance, and security across distributed multi-cloud architectures.
Public social data API for X (formerly Twitter) built for developers and AI agents, offering real-time tweets, user profiles, and search endpoints.
Curated marketplace providing over 14,000 design resources including UI kits, templates, illustrations, and 3D assets to speed up creative workflows.
Provider of responsive HTML and Bootstrap website templates along with free CSS design sets and UI components for web developers.
A collection of HTML, Tailwind CSS, and Bootstrap landing page templates, website templates, and UI kits for developers and designers.
Browser-based tool to convert any unicode symbol, emoji, or glyph into a favicon in PNG, ICO, or SVG formats.
Desktop application for Laravel code generation, schema editing, and scaffolding migrations, models, controllers, and CRUD views.
Pre-built solutions and starter kits for application development from Vercel and the community.
A browser-based Verilog simulator and synthesis tool running Icarus Verilog compiled to WebAssembly with waveform generation.
JSON editor and viewer that automatically detects and renders Base64-encoded images, audio, video, and PDF data inline without manual decoding.
Vim is a highly configurable text editor built to make creating and changing any kind of text very efficient.
A powerful, open-source code editor with built-in AI-powered development agents, multi-language support, and extensive extension capabilities.
An offline-first, Git-native API client that integrates request testing and documentation into plain Markdown files.
Browser extension and standalone app for inspecting Vue.js component trees, states, and relationships.
Repository of responsive website templates, UI kits, and WordPress themes for diverse industries.
Continuous JavaScript and TypeScript test runner providing real-time feedback, code coverage, and time-travel debugging directly inside your IDE.
Technographic data provider that identifies technologies used on websites for prospecting and market analysis.
Collection of web development code generators for CSS, HTML, structured data, meta tags, Open Graph, Twitter cards, and robots.txt.
A browser extension that adds a comprehensive toolbar of web development tools to Chrome, Edge, Firefox, and Opera.
A collection of unified development tools for encoding, compression, formatting, hashing, serialization, and cryptography with local-first storage.
IDE for JavaScript and TypeScript development, featuring intelligent code completion, refactoring, debugging, and integrated AI tools.
Browser extension to identify fonts on web pages by hovering over text and clicking elements to inspect typography styles.
Visual Tailwind CSS builder featuring AI generation, drag-and-drop editing, prebuilt templates, and code export for multiple frontend frameworks.
A collection of Tailwind CSS templates, UI kits, components, and tools curated for real web development projects.
A collection of professional React templates for admin dashboards, SaaS applications, and business websites.
Collection of web development resources, tools, templates, and articles.
API and scraper for searching and extracting X (Twitter) tweets, replies, followers, and profiles, with support for AI agents.
A collection of web-based utilities for parsing, formatting, converting, validating, and comparing YAML data structures and configuration files.
A high-performance, open-source code editor written in Rust, designed for speed, real-time collaboration, and native AI integration.