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AddAn open-source, self-hosted money management platform with comprehensive expense tracking, budgeting, account synchronization, and bill-splitting features - designed for privacy, flexibility, and complete financial control.
A machine learning framework for Node.js, based on MLX.
Extract, Transform, Index Data. Easy and Fresh. CocoIndex is the world's first open-source engine that supports both custom transformation logic and incremental updates specialized for data indexing.
With CocoIndex, users declare the transformation, CocoIndex creates & maintains an index, and keeps the derived index up to date based on source update, with minimal computation and changes.
The free and open source email and collaboration software .
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Open source, AI-native testing framework for web apps.
End-to-end testing framework powered by visual AI agents that see your interface and adapt to any changes in it.
Open source data warehouse for real time data analytics.
Apache Doris is an easy-to-use, high-performance and real-time analytical database based on MPP architecture, known for its extreme speed and ease of use. It only requires a sub-second response time to return query results under massive data and can support not only high-concurrency point query scenarios but also high-throughput complex analysis scenarios.
The elegant bundler for libraries powered by Rolldown.
tsdown is The Elegant Library Bundler. Designed with simplicity and speed in mind, it provides a seamless and efficient way to bundle your TypeScript and JavaScript libraries. Whether you're building a small utility or a complex library, tsdown empowers you to focus on your code while it handles the bundling process with elegance.
Database Relationship Diagrams Design Tool.
Draw Entity-Relationship Diagrams, Painlessly 😎 A free, simple tool to draw ER diagrams by just writing code. Designed for developers and data analysts.
Free Email Forwarding. Custom Domain Emails.
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Purpose-built log analytics UI for ClickHouse.
A modern, single binary, high-performance log analytics platform.
Logchef is a dedicated log query and visualization interface built specifically for ClickHouse. It fills a critical gap in the ClickHouse ecosystem, providing a powerful log explorer without reinventing log collection or storage.
AI-Powered, Non-Intrusive Terminal Assistant
TmuxAI is a non-intrusive terminal assistant that works alongside you in a tmux window. TmuxAI's design philosophy mirrors the way humans collaborate at the terminal. Just as a colleague sitting next to you, TmuxAI observes your screen, understand context from what's visible, and helps accordingly.
E-ink IBM XT clone with solar power, ultra low power consumption, and ultra long battery life.
Evertop is a portable PC that emulates an IBM XT with an 80186 processor and 1MB RAM. It can run DOS, Minix, and some other old 1980s operating systems. It also runs Windows up to version 3.0. Because it's based on a powerful yet very low power microcontroller, uses an e-ink display, packs two 10,000mAh batteries, and implements extreme power saving measures, it can run for hundreds or even thousands of hours on a single charge. Combine that with its built in solar panel, and you should be able to use it indefinitely off grid without ever having to worry about battery life.
snapDOM captures DOM nodes as images with exceptional speed avoiding bottlenecks and long tasks.
snapDOM is a high-fidelity DOM capture tool, developed as part of the animation engine I'm developing for Zumly — a framework for creating smooth zoom-based view transitions.
Mandela's Library of Alexandria.
Internet-in-a-Box “learning hotspots” are used in dozens of countries, to give everyone a chance, e.g. in remote mountain villages in India.
Now you too can put the internet in a box and customize it with the very best free content for your school, clinic or family!
Create stunning screen recordings right from your browser
The easiest way to create product demos and tutorials—right in your browser, no login required! Capture, edit, and share in minutes.
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Transparent AI, Rooted in Research, Open to All. The Open Source Deep Researcher Tool. AI-Powered Online Data Information Synthesis Assistant.
CleverBee is a powerful Python-based research assistant agent using Large Language Models (LLMs) like Claude and Gemini, Playwright for web browsing, and Chainlit for an interactive UI. It performs research assistance by browsing the web, extracting content (HTML), cleaning it, and synthesizing findings based on user research topics.
Harden Windows Safely, Securely using Official Supported Microsoft methods and proper explanation | Always up-to-date and works with the latest build of Windows | Provides tools and Guides for Personal, Enterprise, Government and Military security level
Instant Distributed Tracing. Enterprise-Grade OpenTelemetry. Distributed tracing without code changes. 🚀 Instantly monitor any application using OpenTelemetry and eBPF.
Accelerate OpenTelemetry implementation with Odigos, an eBPF-based solution providing zero-code, zero-performance overhead for deeper tracing
Odigos is an open-source distributed tracing solution that simplifies and improves observability for Kubernetes environments and Virtual Machines. It provides instant tracing capabilities without requiring any code changes to your applications.
An MCP server that autonomously evaluates web applications.
Browser Agents to vibe-test your web app. Let browser agents vibe-test your vibe-coding.
10x your vibe coding by giving your coding agent a browser agent that can vibe-test web applications via MCP.
Modern Zod-based CLI builder, fully type-safe, super lightweight and flexible.
A powerful, flexible, Markdown-based authoring framework.
From personal blogs to massive documentation sites, Markdoc is a content authoring system that grows with you.
Markdoc is a Markdown-based syntax and toolchain for creating custom documentation sites and experiences. We designed Markdoc to power Stripe's public docs, our largest and most complex content site.
Visual Code Comparison Tool.
Effortlessly compare and merge code in a responsive split‑view interface, with interactive change selection and support for over 180 programming languages.
Visual Diff-Merge is a web-based tool for comparing, selecting, and merging code changes. With a split-view interface, it lets you view two versions side by side for easy diffing and merging. Built with PHP and JavaScript, it supports automatic language detection and syntax highlighting for over 180 programming languages, including HTML, Twig, PHP, JavaScript, JSON, TypeScript, Python, Ruby, Java, C#, CSS, XML, YAML, Markdown, SQL, and many more.
Python, on hardware.
PyXL is a custom chip that runs Python directly in hardware. no VM, no JIT, no C. Just fast, native Python execution.
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I made my AI think harder by making it argue with itself repeatedly. It works stupidly well.
CoRT makes AI models recursively think about their responses, generate alternatives, and pick the best one. It's like giving the AI the ability to doubt itself and try again... and again... and again.
A declarative cross-platform React Native calendar component for iOS and Android.
An open source, free (as in beer), versatile, flexible and lightweight Javascript Font Picker Component for System fonts, Google fonts and custom (woff/ttf) fonts. Features dynamic font loading, favourites, keyboard navigation, fuzzy search, advanced metrics filters, property sorting and much more. Available in multiple languages.
MCP Server to fetch costs and usage data from your Vantage account.
Use natural language to explore your organization’s cloud costs via MCP clients, like Claude, Cursor, and others. Ask questions about your organization's previous and current cloud cost spend, cost tagging, provider integrations, and more.
A web-app framework that includes everything needed to create database-backed web applications according to the Model-View-Controller (MVC) pattern.
Related contents:
- Making the case for Rails monoliths over microservices @ thoughtbot.
- Part 1: How We Fell Out of Love with Next.js and Back in Love with Ruby on Rails & Inertia.js @ Hardcover.
- The One-Person Framework in practice @ Bram Jetten.
- Serving Large Files in Rails with a Reverse Proxy Server @ Write Software, Well.
- My puts Debugging Workflow in Rails Apps @ Paweł Urbanek.
- Tip: Put your Rails app on a SQL query diet @ Andrew Atkinson.
- Ruby on Rails: The Open-Source Blueprint @ The Miners.
- Engineering excellence starts on edge @ David Heinemeier Hansson.
The best way of working with Protocol Buffers. Kafka and gRPC for the modern age.
Store directly to Apache Iceberg™ tables and guarantee data quality with Bufstream, a drop-in replacement for Apache Kafka® deployed entirely in your own VPC on AWS, GCP, or Azure.
The buf CLI is the best tool for working with Protocol Buffers. It provides:
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A linter that enforces good API design choices and structure.
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A breaking change detector that enforces compatibility at the source code or wire level.
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A generator that invokes your plugins based on configuration files.
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A formatter that formats your Protobuf files in accordance with industry standards.
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Integration with the Buf Schema Registry, including full dependency management.
All-in-One Network Monitoring Software.
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jscodeshift is a toolkit for building and running codemods over multiple JavaScript or TypeScript files.
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Docker image for terraform provisioning that supports provider plugin caching and declarative binary installation via mise.
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MCP server for understanding AWS spend.
An MCP server for getting AWS spend data via Cost Explorer and Amazon Bedrock usage data via Model invocation logs in Amazon Cloud Watch through Anthropic's MCP (Model Control Protocol).
Look At Your Data 👀.
Data quality is the most important factor in machine learning success. Hyperparam brings exploration and analysis of massive text datasets to the browser.
free AI coding. Non-agentic 100% free & open source coding tool for AI-assisted programming.
Copy folders and files for chatbots or initialize them hands-free! Use built-in API Tools for code completions, file refactoring and applying chat responses.
A declarative, 🐻❄️-native data frame validation library.
Dataframely is a Python package to validate the schema and content of polars data frames. Its purpose is to make data pipelines more robust by ensuring that data meet expectations and more readable by adding schema information to data frame type hints.
Convert CSV & Excel to Clean, Structured Data — Instantly
Drop your files in. Get perfect JSON, XML, or CSV in seconds. No code, no setup — just fast, browser-based data conversion.
free and open API designed to serve weather forecast data using the same syntax as Dark Sky.
Awesome Docker Compose is your go-to hub for discovering and deploying over 700 popular self-hosted apps effortlessly. Docker Compose, a free and open-source tool, simplifies the process by automatically handling dependencies and services, allowing you to install your favorite apps without the usual hassle.
A MySQL-compatible relational database with a storage agnostic query engine. Implemented in pure Go.
go-mysql-server is a data-source agnostic SQL engine and server which runs queries on data sources you provide, using the MySQL dialect and wire protocol. A simple in-memory database implementation is included, and you can query any data source you want by implementing your own backend.
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Production-Grade Container Scheduling and Management.
Kubernetes, also known as K8s, is an open source system for automating deployment, scaling, and management of containerized applications.
Related contents:
- How Kubernetes Works Internally? @ System Design Codex.
- Minimum vital pour survivre sur un sujet Kubernetes @ Téotime Pacreau :fr:.
- Formation Kubernetes : Admin & Développeurs @ DevSecOps :fr:.
- How To Run Kubernetes Commands in Go: Steps and Best Practices @ The New Stack.
- Kubernetes Is Powerful, But Not Secure (at least not by default) @ Tigera.
- Docker to Kubernetes: The 30-Day Migration Path Every Developer Should Know @ Teamcamp's dev.to.
A fast and complete implementation of Markdown in Python.
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Edit, Sign, Merge & Secure. Edit PDFs Freely & Privately, Right in Your Browser.
Breeze PDF is a powerful, free PDF editor that works entirely offline in your browser. No uploads, 100% privacy guaranteed.
Terminal Commands and File Editing for Claude.
This is MCP server for Claude that gives it terminal control, file system search and diff file editing capabilities.
The Black Magic Framework. Powerful Discord Bots Made Simple with Seyfert
Experience the perfect balance of power and simplicity.A modern Discord framework engineered for scalability, without sacrificing developer experience.
Seyfert is the ultimate Discord framework! We make it easy to interact with the Discord API, big cache control, scalable code and a pretty dev experience.
The PM for your AI agent. An AI-powered task-management system you can drop into Cursor, Lovable, Windsurf, Roo, and others.
Taskmaster is your AI's personal project manager. Organize, research, expand, prioritize, and ship tasks effortlessly. Enjoy permanent context, zero drift & instant clarity. It's free, open-source & API-friendly. Let's vibe productively.
Artificial Neural Engine Machine Learning Library.
ANEMLL (pronounced like "animal") is an open-source project focused on accelerating the porting of Large Language Models (LLMs) to tensor processors, starting with the Apple Neural Engine (ANE).
Safer python package installs with audit and consent 𝘣𝘦𝘧𝘰𝘳𝘦 install.
Pipask is a drop-in replacement for pip that performs security checks before installing a package. Unlike pip, which needs to download and execute code from source distribution first to get dependency metadata, pipask relies on metadata from PyPI whenever possible. If 3rd party code execution is necessary, pipask asks for consent first. The actual installation is handed over to pip if installation is approved.
Kubernetes logging dashboard.
Kubetail is a real-time logging dashboard for Kubernetes.
On-device LLM execution in React Native with Vercel AI SDK compatibility.
Run LLMs on-device in React Native via MLC LLM Engine with compatibility for Vercel AI SDK.
Google's Mobile and Web App Development Platform.
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Swaps non-privacy respecting sites with open source privacy frontends.
Privacy Please is a browser extension that automatically redirects users from major websites to privacy-respecting frontend alternatives. Instead of feeding surveillance capitalism, you get clean access to content without tracking, ads, or engagement profiling.
integrate LLM with any tool. ACI: Open-Source Infra to Power Unified MCP Servers.
ACI.dev is the open-source infrastructure layer for AI-agent tool-use. It gives your agents intent-aware access to 600+ tools with multi-tenant auth, granular permissions, and dynamic tool discovery—exposed as either direct function calls or through a Unified Model-Context-Protocol (MCP) server.
ACI.dev is the open source platform that connects your AI agents to 600+ tool integrations with multi-tenant auth, granular permissions, and access through direct function calling or a unified MCP server.
A Rust web framework that does not use async.
Feather is a lightweight, DX-first web framework for Rust — inspired by the simplicity of Express.js, but designed for Rust’s performance and safety.
SQLite Multitenancy With Rails.
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Collection of decent Community-made GRUB themes. Contributions welcome!
There are many great community made GRUB themes to spice up your bootloader before booting into your system proper. Unfortunately, they're spread across multiple sites and it can be difficult to find good ones. As another user told me, the majority of themes on Pling (the largest host of GRUB themes currently) are fairly low effort and can be boring to trawl through. Hence, I decided to put together this page to bring attention to some decent themes I've found around the internet over time. They aren't all absolute masterpieces of course: But they've all at least had a fair amount of effort put into them, with custom backgrounds, fonts, and colours.
MCP Integrationfor AI Applications
The best way to get access to production-ready MCP servers at scale.
Klavis AI makes it effortless to connect to production-ready MCP servers & clients at scale. Integrate with your AI application in under a minute, and scale to millions of users using our open-source infrastructure, hosted servers, and multi-platform clients!