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AddConnexion is a modern Python web framework that makes spec-first and api-first development easy. You describe your API in an OpenAPI (or swagger) specification with as much detail as you want and Connexion will guarantee that it works as you specified.
An open specification for enriching containers with development specific content and settings.
A Development Container (or Dev Container for short) allows you to use a container as a full-featured development environment. It can be used to run an application, to separate tools, libraries, or runtimes needed for working with a codebase, and to aid in continuous integration and testing. Dev containers can be run locally or remotely, in a private or public cloud.
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Boot and upgrade via container images.
Transactional, in-place operating system updates using OCI/Docker container images. bootc is the key component in a broader mission of bootable containers.
The original Docker container model of using "layers" to model applications has been extremely successful. This project aims to apply the same technique for bootable host systems - using standard OCI/Docker containers as a transport and delivery format for base operating system updates.
A simple but powerful PSR-11 dependency injection container.
Content Credentials reveal helpful information that's usually hidden
Critical information about the content you see online is often inaccessible or inaccurate. Content Credentials are a new open technology for revealing answers to your questions about content with a simple click: How was it made? Is it AI-generated? When was it created or edited?
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Content Security Policy Reference.
The new Content-Security-Policy HTTP response header helps you reduce XSS risks on modern browsers by declaring which dynamic resources are allowed to load.
Introducing Content Signals, Cloudflare's implementation of a mechanism for allowing website publishers to declare how automated systems should use their content.
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Up-to-date documentation for LLMs and AI code editors.
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Save 98% of your AI coding agent's context window.
Context window optimization for AI coding agents. Sandboxes tool output, 98% reduction. 15 platforms
A community-driven Matrix homeserver. Fast, lightweight and open.
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Gamepad Tester & Controller Test - Check Joystick Online. Complete Controller Testing.
No software downloads required, just connect. Get real data on your controller's analog sticks, buttons, and vibration performance.
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Comments that are easy to grok and grep.
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the very last word in instant messaging.
Conversations is a Jabber/XMPP client for Android 6.0+ smartphones that has been optimized to provide a unique mobile experience.
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A Simple Image To SVG Vector Converter
GitHub repository: https://github.com/wwebdev/convert2svg
Convos is an IRC client that runs in your browser and brings the IRC experience into the 21st century. It features a persistent bouncer on the server side that will keep you online even after you close your browser window. Want to use Convos on your phone? No problem! Convos is fully responsive and fits any screen. Convos can be installed on your home server, cloud service, or in Docker.
A lightweight, GDPR and CCPA compliant Consent Management Tool written in vanilla JS.
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Better Project Templates.
Cookiecutter creates projects from cookiecutters (project templates), e.g. Python package projects from Python package templates.
recipe markup language.
Cooklang is a simple, human-readable text format for writing recipes that can be understood by both cooks and computers.
Write @flour{2%cups} and ~{25%minutes} in plain text files. Get automatic shopping lists, scaling, timers, and beautiful formatting — while keeping your recipes in files you own forever.
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Self-hosting with superpowers. An open-source & self-hostable Heroku / Netlify / Vercel alternative.
Coolify is an open-source & self-hostable alternative to Heroku / Netlify / Vercel / etc. It helps you to manage your servers, applications, databases on your own hardware, all you need is SSH connection. You can manage VPS, Bare Metal, Raspberry PI's anything.
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The super fast color schemes generator!
Similar to Hail Pixel, Coolors makes color picking more fluid by helping you mix and match colors until you find the perfect combination. Hit the space button until a color combo appears that you like – then move selections around, adjust color components and export your palette when it’s ready.
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With GitHub Copilot, get suggestions for whole lines or entire functions right inside your editor.
Cursor for circuit boards.
Copperhead is an open-source AI engineering platform that helps hardware teams design, verify and ship circuit boards.
CSS templates for buttons, box-shadows, form inputs, color palettes & emojis.
Coqui STT (frogSTT) is a fast, open-source, multi-platform, deep-learning toolkit for training and deploying speech-to-text models. frogSTT is battle tested in both production and research rocket
A better commenting experience from Vox Media.
Coral improves community on your website through open source software, effective design, and strategies that work. Online comments are broken. Our open-source commenting platform, Coral, rethinks how moderation, comment display, and conversation function, creating the opportunity for safer, smarter discussions around your work.
Enterprise-grade open source web application firewall library. Coraza is an open source, high performance, Web Application Firewall ready to protect your beloved applications.
Fast, secure and flexible Open Source firmware.
coreboot is a Free Software project aimed at replacing the proprietary firmware (BIOS/UEFI) found in most computers. coreboot performs the required hardware initialization to configure the system, then passes control to a different executable, referred to in coreboot as the payload. Most often, the primary function of the payload is to boot the operating system (OS).
coreboot is an extended firmware platform that delivers a lightning fast and secure boot experience on modern computers and embedded systems. As an Open Source project it provides auditability and maximum control over technology.
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Dashboard to manage your entire server infrastructure.
The only dashboard you'll ever need to manage your entire server infrastructure. Keep all your server data organized in one central place, easily add your self-hosted applications with quick access links, and monitor their availability in real-time with built-in uptime tracking. Designed for simplicity and control, it gives you a clear overview of your entire self-hosted setup at a glance.
DNS and Service Discovery.
CoreDNS is a DNS server. It is written in Go. It can be used in a multitude of environments because of its flexibility.
CoreDNS is a DNS server/forwarder, written in Go, that chains plugins. Each plugin performs a (DNS) function.
CoreDNS can listen for DNS requests coming in over UDP/TCP (go'old DNS), TLS (RFC 7858), also called DoT, DNS over HTTP/2 - DoH - (RFC 8484) and gRPC (not a standard).
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Coroot helps you fix service outages and even prevent them. It continuously audits telemetry data to highlight issues and weak spots in your infrastructure. Coroot is not another observability platform with flashy dashboards and alerts rules. It is an assistant, which not only detects issues in your applications but also provides you with a list of possible fixes. Each recommendation is equipped with all the relevant details to implement the fix.
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An open-source observability platform built for simplicity. Say goodbye to manual analysis of metrics, logs, and traces. Gain actionable insights and focus on remediation.
Coroot is an open-source APM & Observability tool, a DataDog and NewRelic alternative 📊, 🖥️, 👉. Powered by eBPF for rapid insights into system performance. Monitor, analyze, and optimize your infrastructure effortlessly for peak reliability at any scale.
All-in-One Observability Platform.
Coroot is an open-source APM & Observability tool, a DataDog and NewRelic alternative. Metrics, logs, traces, continuous profiling, and SLO-based alerting, supercharged with predefined dashboards and inspections.
Open Source Integration Layer for AI Agents. Add any integration in minutes.
Connect to the apps your users rely on without maintaining the infrastructure that keeps it working.
Corsair is the unified integration layer for your agents. Connect your Corsair instance to your agent and immediately get access to every integration. Your agent never sees the credentials, and you control exactly what it can do.
APIs built for developers and agents.Every developer.Every agent.
Cortex turns API specifications and Markdown into typed SDKs, interactive documentation, and MCP servers for developers and AI agents. Generate typed SDKs from OpenAPI, AsyncAPI, GraphQL, gRPC, and OpenRPC—plus interactive docs and MCP servers enriched with custom Markdown.
Horizontally scalable, highly available, multi-tenant, long term storage for Prometheus.
Cloud-Hosted Content Management Platform, API-First CMS. API-first CMS for building content-powered apps in any programming language.
☁️ The Most Secure and Easy Selfhosted Home Server. Take control of your data and privacy without sacrificing security and stability (Authentication, anti-DDOS, anti-bot) .
Selfhosting your own cloud and web services is so satisfying, but it's also very time consuming, and dangerous. With Cosmos, take the chore out of selfhosting, with automated maintenance and fully secured setup out of the box. It even integrates to your existing setup.
Security Orchestrator for Advanced Response to Cyber Attacks.
The Open Source CACAO-based Security Orchestrator! Automate threat and incident response workflows with CACAO security playbooks.
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Seamless multi-master sync, that scales from Big Data to Mobile, with an Intuitive HTTP/JSON API and designed for Reliability.
CouchDB is a database that completely embraces the web. Store your data with JSON documents. Access your documents with your web browser, via HTTP. Query, combine, and transform your documents with JavaScript. CouchDB works well with modern web and mobile apps. You can distribute your data, efficiently using CouchDB’s incremental replication. CouchDB supports master-master setups with automatic conflict detection.
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Simple Web Analytics. Web Analytics made simple and therefore privacy-friendly.
Not just a mock server. Turn an OpenAPI spec into TypeScript-based simulation, with state management, hot reload, and a REPL.
Point Counterfact at an OpenAPI spec and get a live, stateful API in seconds — with TypeScript safety, hot reload, shared state, and a programmable REPL.
AI Model Comparison.
See and compare every AI model easily. 100% free & open-source.
Mobile Analytics, Web Analytics and Mobile Marketing Platform. 360° Web and Mobile Analytics Extensible via plugins, on-prem or private cloud deployment options, powerful analytics and marketing features
Plan your rack layout. Drag your devices in, move them around, export it. It runs in your browser. You can close the tab whenever you want.
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A free course designed for people with some coding experience, who want to learn how to apply deep learning and machine learning to practical problems.
Level up your dbt™ skills on your own time with dbt Fundamentals.Learn Analytics Engineering with dbt.
spaCy is a modern Python library for industrial-strength Natural Language Processing. In this free and interactive online course, you'll learn how to use spaCy to build advanced natural language understanding systems, using both rule-based and machine learning approaches.
30 years ago, top was born. scout_realtime is top for the modern developer.
Coverage.py is a tool for measuring code coverage of Python programs. It monitors your program, noting which parts of the code have been executed, then analyzes the source to identify code that could have been executed but was not.
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Test Coverage History & Statistics Coveralls works with your continuous integration server to give you test coverage history and statistics. Free for open source, pro accounts for private repos, instant sign up with GitHub OAuth. We help you deliver code confidently by showing which parts of your code aren’t covered by your test suite. Free for open source repos. Pro accounts for private repos. Instant sign up through GitHub, Bitbucket, and Gitlab.
See how trackers view your browser. Test your browser to see how well you are protected from tracking and fingerprinting.
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Free and open source PaaS framework for building clouds.
Transform a set of bare metal servers into an intelligent system with a simple REST API for spawning Kubernetes clusters, Databases-as-a-Service, virtual machines, load balancers, HTTP caching services, and other services with ease.
The ultimate bridge for cross-platform reading and listening synchronization.
BookBridge is a self-hosted sync engine for audiobooks and ebooks. It keeps your reading and listening position aligned across multiple apps, whether the source is Audiobookshelf, KOReader, BookFusion, Grimmory, BookOrbit, Calibre-Web Automated, or Storyteller. With the current Bridge Sync KOReader plugin, it can also move highlights and notes between supported readers.
Curious exactly what happens when you run a program on your computer? Read this article to learn how multiprocessing works, what system calls really are, how computers manage memory with hardware interrupts, and how Linux loads executables.
Run Composer packages, effortlessly. The entire PHP ecosystem, always at your fingertips.
Run any command from any composer package, even if it's not installed in your project.
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Focused content management for web professionals. Craft is a content-first CMS that aims to make life enjoyable for developers and content managers alike.
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