development
A drop-in javascript spreadsheet library that provides rich features like Excel and Google Sheets.
The goal of FortuneSheet is to make a feature-rich, easy-to-configure online spreadsheet that you can use out-of-the-box.
This project is originated from Luckysheet and has inherited many code from it. Lots of efforts have done to translate the whole project to typescript (still in progress), and solved problems in the design of the original project.
Lab helps you experiment with code without friction. Type lab with any extension and start coding - it handles files, organization, and cleanup automatically.
Lab lets you experiment with code instantly—just type lab js (or any extension) and your editor opens, ready to go. No more overhead of creating files and folders. Your experiments are automatically organized with smart names (e.g., 250112a.js) in a lab folder, and they clean themselves up after 7 days to keep things tidy.
Microsoft Fluent UI Blazor components library. For use with ASP.NET Core Blazor applications.
The Fluent UI Blazor library provides a robust and extensive set of Blazor components. Some of those components are wrappers around Microsoft's official Fluent UI Web Components. Others are components that leverage the Fluent Design System or just make it easier to work with Fluent in general.
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Zero-Friction Serverless Apps On AWS Lambda & Beyond. Easy Serverless Apps on AWS Lambda.
Deploy APIs, scheduled tasks, workflows and event-driven apps to AWS Lambda easily with the Serverless Framework.
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An embedded scripting language for Rust.
Rhai is an embedded scripting language and evaluation engine for Rust that gives a safe and easy way to add scripting to any application.
Compile shell scripts to static binaries.
Bunster transforms your shell scripts into efficient, standalone binaries that are easy to distribute and deploy across platforms (only unix is supported at the moment).
Technically speaking, Bunster is a shell-to-Go Transpiler that generates Go source out of your scripts. Then, optionally uses the Go Toolchain to compile the code to an executable program.
Scan for React performance issues and eliminate slow renders in your app.
React Scan automatically detects performance issues in your React app.
Racket is a general-purpose programming language and an ecosystem for language-oriented programming.
Racket is a flexible, multi-paradigm language from the Lisp family, ideal for language-oriented programming. It supports functional, procedural, and object-oriented paradigms, and features a powerful macro system, robust modules, and extensive libraries. Racket is also widely used in education to teach programming concepts and language design.
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A tool for reverse engineering Android apk files.
Apktool is a tool for reverse engineering third-party, closed, binary, Android apps. It can decode resources to nearly original form and rebuild them after making some modifications; it makes it possible to debug smali code step-by-step. It also makes working with apps easier thanks to project-like file structure and automation of some repetitive tasks such as building apk, etc.
SRCL is an open-source React component and style repository that helps you build web applications, desktop applications, and static websites with terminal aesthetics. Its modular, easy-to-use components emphasize precise monospace character spacing and line heights, enabling you to quickly copy and paste implementations while maintaining a clean, efficient codebase.
Analyze your Ruby scripts with prism. Find Ruby syntax patterns with Prism.
The Evolution of Version Control. Version control that works the way you think.
Ever felt that version control should be simpler? That branching shouldn't require a PhD in Git? That merging shouldn't feel like defusing a bomb? We did too. That's why we built Evo.
Evo is a modern, offline-first version control system that focuses on what matters most: helping developers write great code together. No more merge conflicts that make you want to quit programming. No more branch structures that look like abstract art. Just clean, intuitive version control that works.
The most advanced responsive front-end framework in the world.
Foundation is the most advanced responsive front-end framework in the world. Quickly go from prototype to production, building sites or apps that work on any kind of device with Foundation. Includes a fully customizable, responsive grid, a large library of Sass mixins, commonly used JavaScript plugins, and full accessibility support.
Pack your codebase into AI-friendly formats.
📦 Repomix (formerly Repopack) is a powerful tool that packs your entire repository into a single, AI-friendly file. Perfect for when you need to feed your codebase to Large Language Models (LLMs) or other AI tools like Claude, ChatGPT, and Gemini.
Easily spot missing ARIA labels, misused ARIA roles, and incomplete keyboard support in your web applications.
Creating accessible web applications is difficult. It gets even harder if you don't understand how people with disabilities use computers.
With ARIA DevTools you see your website the way screen readers present it to the blind users. All page elements are presented according to their explicit or implied ARIA roles. This includes headings, images, tables and form items beyond others.
An extremely fast Python linter and code formatter, written in Rust.
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A goto styled text editor for SvelteKit; based on TipTap.
Tipex stands as an advanced rich text editor tailored for Svelte, meticulously engineered with the robust frameworks Tiptap and Prosemirror. It empowers developers to effortlessly craft rich text editors, liberating them from the intricacies of underlying technologies, style management, and related complexities.
pflag is a drop-in replacement for Go's flag package, implementing POSIX/GNU-style --flags.
pflag is compatible with the GNU extensions to the POSIX recommendations for command-line options. For a more precise description, see the "Command-line flag syntax" section below.
Go configuration with fangs.
Viper is a complete configuration solution for Go applications including 12-Factor apps. It is designed to work within an application, and can handle all types of configuration needs and formats.
A lightweight Java and Kotlin web framework.
Javalin is a very lightweight web framework for Kotlin and Java which supports WebSockets, HTTP2 and async requests. Javalin’s main goals are simplicity, a great developer experience, and first class interoperability between Kotlin and Java.
An open source Valkey client library that supports Valkey and Redis open source 6.2, 7.0 and 7.2. Valkey GLIDE is designed for reliability, optimized performance, and high-availability, for Valkey and Redis OSS based applications. GLIDE is a multi language client library, written in Rust with programming language bindings, such as Java and Python
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Modular building blocks for building collaborative applications like Google Docs and Figma.
Yjs is a shared editing framework. It exposes Shared Types that can be manipulated like any other data type. But they are synced automatically!
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Standards first web framework. Nue is HTML, CSS, and JavaScript taken to their absolute peak.
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Ultra-Lightweight Durable Execution in TypeScript. DBOS Transact: A Lightweight Durable Execution Library Built on Postgres.
Durable execution means persisting the execution state of your program while it runs, so if it is ever interrupted or crashes, it automatically resumes from where it left off. Durable execution helps solve many common problems:
This is a simple demonstration of more advanced, agentic patterns built on top of the Realtime API. - openai/openai-realtime-agents
🔥 Airbroke: Lightweight, Airbrake-compatible, PostgreSQL-based Open Source Error Catcher. Self-hosted, Cost-effective, Open Source Error Tracking for a Sustainable Startup Journey.
Email parser for browser and serverless environments.
postal-mime is an email parsing library that runs in browser environments (including Web Workers) and serverless functions (like Cloudflare Email Workers). It takes in a raw email message (RFC822 format) and outputs a structured object containing headers, recipients, attachments, and more.
Working with Django in the modern JavaScript ecosystem without giving up the things that make it great.
JavaScript is the lifeblood of the modern web application. You need it to do anything remotely complex on the web.
And these days, if you want a modern, responsive, interactive application—and who doesn't?—your front-end codebase may end up as large and complex as your back end.
A high-performance, zero-overhead, extensible Python compiler using LLVM.
Codon is a high-performance Python compiler that compiles Python code to native machine code without any runtime overhead. Typical speedups over Python are on the order of 100x or more, on a single thread. Codon supports native multithreading which can lead to speedups many times higher still.
Send your App Updates in Seconds 🚀.
Mirai is an open-source Server-Driven UI framework for Flutter to build cross platform applications.
Mirai is a powerful Server-Driven UI (SDUI) framework for Flutter, enabling you to build beautiful, cross-platform applications dynamically using JSON in real time.
GNU's programming and extension language.
Guile is designed to help programmers create flexible applications that can be extended by users or other programmers with plug-ins, modules, or scripts.
This is a package that shortens strings like Finder on Mac does. Instead of trimming from the start or end it trims the string in the middle and adds a filler char.
Hey there! In this book, we're going to build a small operating system from scratch, step by step.
You might get intimidated when you hear OS or kernel development, the basic functions of an OS (especially the kernel) are surprisingly simple. Even Linux, which is often cited as a huge open-source software, was only 8,413 lines in version 0.01. Today's Linux kernel is overwhelmingly large, but it started with a tiny codebase, just like your hobby project.
This package provides secure first factor one-time passwords (OTPs) for Laravel applications. Users enter their email and receive a one-time code to sign in.
Opensource, self-hosted AI coding assistant. Secure, flexible, and transparent AI coding.
Tabby is a self-hosted AI coding assistant, offering an open-source and on-premises alternative to GitHub Copilot.
Txtlog.net is an easy to use text log. Log anything from a web or mobile application by sending a POST request with the log data.
Swift is a powerful and intuitive programming language optimized when running on iOS, macOS, and other Apple platforms.
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📘 OpenAPI/Swagger-generated API Reference Documentation. Generate beautiful API documentation from OpenAPI.
Redoc is an open source tool for generating documentation from OpenAPI (formerly Swagger) definitions.
The Collaborative Programming Service by JetBrains.
Code With Me is a quick and efficient way for developers to help each other. Simply invite your colleagues, look into the problem together, and come up with a solution there and then. Code With Me is a new collaborative coding and pair programming service. It makes it possible for you to invite others into your IDE project, and work on it together in real time.
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Python3 library for downloading YouTube Videos.
pytubefix is a lightweight, Pythonic, dependency-free, library (and command-line utility) for downloading YouTube Videos.
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Cross-platform 2D and 3D game engine with modular architecture.
Thunder Engine is free for all purposes an open-source multi-functional lightweight game engine for creating 2D and 3D games. It provides a basic framework and extensible tools. So developers can focus on the creation, and the Thunder Engine will do the routine.
A CLI tool to convert your codebase into a single LLM prompt with source tree, prompt templating, and token counting.
A TUI (terminal UI) kit for Elixir.
Ratatouille is a declarative terminal UI kit for Elixir for building rich text-based terminal applications similar to how you write HTML.
The API client that lives in your terminal.
Posting is an HTTP client, not unlike Postman and Insomnia. As a TUI application, it can be used over SSH and enables efficient keyboard-centric workflows. Your requests are stored locally in simple YAML files, so they're easy to read and version control.
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The best monetization platform for developers.
An open source Merchant of Record. Sell SaaS and digital products in minutes. Focus on building your passion, while we focus on the infrastructure to get you paid.
Built to keep you in flow state
The first agentic IDE, and then some. The Windsurf Editor is where the work of developers and AI truly flow together, allowing for a coding experience that feels like literal magic.
TUI components for Bubble Tea 🫧 .
Some components for Bubble Tea applications. These components are used in production in Glow, Charm and many other applications.
Native mobile apps,as easy as creating a website. Server-driven mobile apps with React Native.
Hyperview is a new hypermedia format and React Native client for developing server-driven mobile apps.
A robust message queue system for Rust applications, designed as a Rust alternative to Celery.
Currently Redis-backed, with planned support for RabbitMQ, Kafka, and other message brokers. This is by no means a finished product, but we're actively working on it and would love your feedback and contributions!
AI Code Generator.
An open source Claude Artifacts – generate small apps with one prompt. Powered by Llama 3 405B & Together.ai.
The NPM for Design Engineers. curated collection of best shadcn ui style react tailwind components, blocks and hooks.
Ship polished UIs faster with React Tailwind components inspired by shadcn/ui. Built by design engineers, for design engineers. One command to install.
21st.dev is an open source community registry of React UI components where anyone can publish minimal Tailwind & Radix UI components and install any component via npx shadcn.
Vue & Node admin panel framework.
Create Admin Panels faster on Node.js and Vue.js with AdminForth Framework. Setup main CRUD pages within minutes, extend as you need with Vue3.
Empower your testing with AI & usage insights.
Gravity monitors real-world user behaviors and usage patterns in live production and test environments to generate quality analytics, identify test coverage gaps, and assist in prioritizing and generating test cases.
An open and free course to build your first mobile app, for complete beginners.
This course is an introduction to coding and programming through a simple project: creating a mobile app that runs natively on Android and iOS smartphones.
A Gentle Introduction.
The first Extreme Programming project was started March 6, 1996. Extreme Programming is one of several popular Agile Processes. It has already been proven to be very successful at many companies of all different sizes and industries world wide.
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bippy is a toolkit to hack into react internals
by default, you cannot access react internals. bippy bypasses this by "pretending" to be react devtools, giving you access to the fiber tree and other internals.
App Monitoring, Error Tracking & Real User Monitoring. Application insights your developers need without the noise. Data means nothing without context. Get the full picture with secure, scalable error tracking and performance monitoring.
Welcome to the Laraplay. A playground environment for any Laravel app or package. Boot-up any Laravel app in seconds! Check out a few examples below.