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AddOpenTelemetry-native GenAI and LLM Application Observability.
Open source platform for AI Engineering: OpenTelemetry-native LLM Observability, GPU Monitoring, Guardrails, Evaluations, Prompt Management, Vault, Playground. 🚀💻 Integrates with 50+ LLM Providers, VectorDBs, Agent Frameworks and GPUs.
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Your Logitech mousekeyboardcamera, finally local.
A local-first alternative to Logitech Options+, written in Rust.Remap buttons, drive DPI and SmartShift over HID++.No account, no telemetry.
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Your Logitech mouse, finally local.
A native, local-first alternative to Logitech Options+, written in Rust 🦀. Remap buttons, drive DPI and SmartShift over HID++ — with no account and no telemetry.
Long-term Memory for AI Agents.
Local persistent memory store for LLM applications including claude desktop, github copilot, codex, antigravity, etc.
Open and unified metadata platform for data discovery, observability, and governance.
A single place for all your data and all your data practitioners to build and manage high quality data assets at scale. Built by Collate and the founders of Apache Hadoop, Apache Atlas, and Uber Databook.
OpenMetadata is a unified metadata platform for data discovery, data observability, and data governance powered by a central metadata repository, in-depth column level lineage, and seamless team collaboration.
OpenMetadata is a unified metadata platform for data discovery, data observability, and data governance powered by a central metadata repository, in-depth column level lineage, and seamless team collaboration. It is one of the fastest-growing open-source projects with a vibrant community and adoption by a diverse set of companies in a variety of industry verticals. Based on Open Metadata Standards and APIs, supporting connectors to a wide range of data services, OpenMetadata enables end-to-end metadata management, giving you the freedom to unlock the value of your data assets.
Evolving the Prometheus exposition format into a standard.
OpenMetrics a specification built upon and carefully extending Prometheus exposition format in almost 100% backwards-compatible ways.
One app for every mouse. Free, open source mouse configurator.
OpenMouse runs entirely in your browser over WebHID — DPI, polling rate, buttons, and RGB, for dozens of gaming mice, with no accounts, no installs, and no telemetry sent anywhere.
Collaboratively transforming network infrastructure by leveraging: Open Source Software, Cloud-Native and SDN Technologies, Disaggregation and White Box Hardware.
OpenNext takes the Next.js build output and converts it into packages that can be deployed across a variety of environments. Natively OpenNext has support for AWS Lambda, and classic Node.js Server.
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Open Source Observability Platform for Logs, Metrics, Traces, and More – Your Ultimate Dashboard for Alerts and Insights.
OpenObserve is a cloud native observability platform built specifically for logs, metrics, traces and analytics designed to work at petabyte scale.
Open-Source Design Editor.
Opens Figma files. Built-in AI. Fully programmable. Also a toolkit for building custom editors.
OpenPERouter (Provider Edge Router) meant to run on linux and to interact with the host through veths.
OpenPERouter is an open implementation of a Provider Edge (PE) router, designed to terminate multiple VPN protocols on Kubernetes nodes and expose a BGP interface to the host network.
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Timely. Accurate. Relevant Phishing Intelligence.
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A new API for podcast synchronization.
The Open Podcast API is an initiative aiming to provide a feature-complete synchronization API specification for podcast (web) apps and user-focused servers.
SPL driver for UNIX.
SpliX is a set of CUPS printer drivers for SPL (Samsung Printer Language) printers. If you have such a printer, you need to use SpliX. Moreover you will find documentation about this proprietary language here.
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sub-atomic styles. Supercharged CSS variables. Expertly crafted web design tokens. Create consistent components. Useful in any framework.
CSS custom properties to help accelerate adaptive and consistent design.
openpyxl is a Python library to read/write Excel 2010 xlsx/xlsm/xltx/xltm files.
It was born from lack of existing library to read/write natively from Python the Office Open XML format.
All kudos to the PHPExcel team as openpyxl was initially based on PHPExcel.
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The OpenRail Association creates an open, autonomous and collaborative innovation space. Its mission is to promote the development of Open Source software projects in the railway sector, as it already exists in numerous other industrial sectors like telecommunication, automotive, or energy.
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Open RAN is intelligent Radio Access Network(RAN) integrated with general purpose platforms with open interface between software definced funtions. Open RAN ecosystem enables enormous flexibility and interoperability with a complete openess to multi-vendor deployments. Open RAN architecture is designed for building virtualized RAN with AI powered control, which is the key to tame the 5G/6G complexity.
Open-Source Session Replay & Analytics. Session replay you can self-host. All you need to observe, measure and iterate on your product.
Session replay and product analytics you can self-host. Ideal for reproducing issues, co-browsing with users and optimizing your product.
Open Research Europe is an open access publishing venue for European Commission-funded researchers across all disciplines, with no author fees.
Accelerate the impact of your research with rapid publication, open peer review, and indexing in databases such as Scopus and PubMed.
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Autoresearch on your machine
Start the local dashboard, then give each research direction its own agent. They work in parallel, in isolated worktrees, using your existing tools and compute.
To spin up remote compute while doing Autoresearch, use OpenResearch's compute marketplace, which aggregates offerings from multiple providers.
High Performance Web Platform Based on Nginx and LuaJIT.
OpenResty® is a dynamic web platform based on NGINX and LuaJIT.
OpenResty® is a full-fledged web platform that integrates our enhanced version of the Nginx core, our enhanced version of LuaJIT, many carefully written Lua libraries, lots of high quality 3rd-party Nginx modules, and most of their external dependencies. It is designed to help developers easily build scalable web applications, web services, and dynamic web gateways.
An open-source, self-hosted AI code review bot. Deploy to Vercel, connect a GitHub App, and get on-demand PR reviews powered by Claude.
What if there was a way to control all of your RGB devices from a single app, on both Windows and Linux, without any nonsense? That is what OpenRGB sets out to achieve. One app to rule them all.
Everything you need to design, simulate and fly better rockets
OpenRocket is a free, fully featured model rocket simulator that allows you to design and simulate your rockets before building and flying them.
A unified interface for LLMs. Better prices, better uptime, no subscription.
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The free SaaS template with superpowers
A free, open-source SaaS app starter for React & Node.js with superpowers. Production-ready. Community-driven.
Universal Sandbox Infrastructure for AI Applications.
Securely run commands, filesystems, code interpreters, browsers, and developer tools in isolated runtime environments.
OpenSandbox is a general-purpose sandbox platform for AI applications, offering multi-language SDKs, unified sandbox APIs, and Docker/Kubernetes runtimes for scenarios like Coding Agents, GUI Agents, Agent Evaluation, AI Code Execution, and RL Training.
Showcase your next product demo with Open Screen. Professional screen recordings with zoom effects, annotations, and beautiful backgrounds.
Discover, collect, and sell extraordinary NFTs OpenSea is the world's first and largest NFT marketplace
🔎 Open source distributed and RESTful search engine. OpenSearch makes it easy to ingest, search, visualize, and analyze your data.
OpenSearch is a community-driven, open source fork of Elasticsearch and Kibana following the license change in early 2021. We're looking to sustain (and evolve!) a search and analytics suite for the multitude of businesses who are dependent on the rights granted by the original, Apache v2.0 License.
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Open Source SEO Platform. Open source alternative to Semrush and Ahrefs. Own your SEO. Research keywords and competitors on your terms. 100% open source.
OpenSEO is an SEO tool for the people. If tools like Semrush or Ahrefs are too expensive or bloated, OpenSEO is a pay-as-you-go alternative that you actually control.
Open Source, Self-Hostable Deployment Platform.
Push your code - builds, config, and deployment are handled automatically. Use our cloud or connect your own servers. Zero lock‑in, completely open‑source.
Open-source, self-hostable deployment platform with built-in CI/CD. Push code, ship containers, manage infrastructure — from a desktop app, web dashboard, or CLI.
The slide framework built for agents.
A React-first slide framework authored by AI agents. Every page is arbitrary code on a 1920×1080 canvas— versioned, reviewable, yours.
The Shadow Library Uptime Monitor.
This dashboard tracks the availability of popular shadow libraries in real time from a US-based server.
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Open source software is made by people just like you. Learn how to launch and grow your project.
Pay your share.
Whether you're a CEO, CFO, CTO, or just a dev, your company surely depends on Open Source software. It's time to pay the maintainers.
A model set of guidelines for RESTful APIs and Events, created by Zalando
Make Your Agents: Smarter, Low-Cost, Self-Evolving" -- Community.
Turn every task, trial, and triumph into shared intelligence with OpenSpace.
One Command to Evolve All Your AI Agents: OpenClaw, nanobot, Claude Code, Codex, Cursor and etc.
A lightweight spec‑driven framework.
OpenSpec aligns humans and AI coding assistants with spec-driven development so you agree on what to build before any code is written. No API keys required.
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Open Spots is a fork of Spots that is designed to help organizations deliver real-time building availability data to staff, employees, customers, or students.
Developers can create an API to deliver their own data to the Open Spots platform. This data can be visualized on an interactive map, and display available spots (rooms with time slots).
Domain Name Threat Intelligence.
The openSquat is a tool for identifying domain look-alikes by searching for newly registered domains that might be impersonating legit domains and brands.
The Package Analysis project analyses the capabilities of packages available on open source repositories. The project looks for behaviors that indicate malicious software:
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What files do they access?
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What addresses do they connect to?
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What commands do they run?
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OpenSSF Scorecard assesses open source projects for security risks through a series of automated checksIt was created by OSS developers to help improve the health of critical projects that the community depends on.
You can use it to proactively assess and make informed decisions about accepting security risks within your codebase. You can also use the tool to evaluate other projects and dependencies, and work with maintainers to improve codebases you might want to integrate.
Scorecard is an automated tool that assesses a number of important heuristics ("checks") associated with software security and assigns each check a score of 0-10. You can use these scores to understand specific areas to improve in order to strengthen the security posture of your project. You can also assess the risks that dependencies introduce, and make informed decisions about accepting these risks, evaluating alternative solutions, or working with the maintainers to make improvements.
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Fluent OpenStack client for Java.
OpenStack4j is a fluent OpenStack client that allows provisioning and control of an OpenStack deployment. This includes support for Identity, Compute, Image, Network, Block Storage, Telemetry, Data Processing as well as many extensions (LBaaS, FWaaS, Quota-Sets, etc)
PHP Server with Async IO, Coroutines and Fibers (previously Swoole).
High-quality, ubiquitous, and portable telemetry to enable effective observability.
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- Even more OpenTelemetry - Kubernetes special @ A Java geek.
- What is OpenTelemetry? @ SigNoz.
- CI/CD Observability with OpenTelemetry - A Step by Step Guide @ SigNoz.
- OpenTelemetry configuration gotchas @ A Java geek.
- From chaos to clarity: How OpenTelemetry unified observability across clouds @ CNCF.
- How to build a cost-effective observability platform with OpenTelemetry @ CNCF.
- Why the OpenTelemetry Batch Processor is Going Away (Eventually) @ dash0.
- From Signals to Reliability: SLOs, Runbooks and Post-Mortems @ Fatih Koç.
- OpenTelemetry Collector vs agent: How to choose the right telemetry approach @ CNCF.
- How to Reduce Telemetry Volume by 40% Smartly (Java) @ Observability Real Talk.
- Why OpenTelemetry Is Paving the Way for the Rise of the Observability Warehouse @ DevOps.
- Open standards in 2026: The backbone of modern observability @ Grafana Labs Blog.
- Telemetry that matters: Designing sustainable, high-impact observability pipelines @ CNCF.
- Don't Wrap OpenTelemetry — You're Probably Hurting More Than Helping @ OpenTelemetry.
- Operating OpenTelemetry at scale with OpAMP @ CNCF.
- Deploy OpenTelemetry Gateway on AWS: Monitoring Your Observability Pipeline @ AWS Cloud Operations Blog.
- One-command OpenTelemetry setup on Linux hosts @ OpenTelemetry.
OpenTimestamps aims to be a standard format for blockchain timestamping.
The open source infrastructure as code tool.
Previously named OpenTF, OpenTofu is a fork of Terraform that is open-source, community-driven, and managed by the Linux Foundation.
Related contents:
- OpenTofu becomes the real deal @ InfoWorld.
- Terraform Compact Function: Clean Up & Simplify Lists @ spacelift.
- How We Migrated 30+ Kubernetes Clusters to Terraform @ Learnings from the paas' Medium.
- The Case for Terraform Modules: Scaling Your Infrastructure Organization @ Infisical.
- Best Practices to Promote from DEV to PROD Environments with HashiCorp Terraform using Workspaces and Folders @ Build5Nines.
- How to Structure a Terraform Project @ Spacelift's dev.to.
- Terraform Stacks - Part 1 - An Introduction @ Mike Guy.
- How to use Terraform to generate secrets @ Techielass.
- Building Meaningful Terraform Test Workflows @ Mark Tinderholt's Medium.
- OpenTofu at Scale: 4 Strategies & Scaling Best Practices @ spacelift.
- Upgrading Our Infrastructure with OpenTofu @ spacelift.
- Terraform vs OpenTofu: Which IaC tool fits your platform strategy? @ Platform Engineering.
- How to Migrate From Terraform to OpenTofu @ Spacelift.
Enjoy Together - Watch videos together online with your friends.
Real-time synchronized playback. Optional voting system. Dark theme. No sign up required. All Open Source. It's never been easier to watch videos together.
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Terminal UIs on a Native Zig Core. OpenTUI is a library for building terminal user interfaces (TUIs).
Build rich, interactive terminal interfaces with TypeScript bindings, first-class React/Solid support, and a C ABI for any language.
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- Mission: Maintain an open standard for UI and promote its adherence and adoption.
- Audience: The broader UI community including designers, engineers, and managers.
The purpose of Open UI to the web platform is to allow web developers to style and extend built-in web UI controls, such as <select> dropdowns, checkboxes, radio buttons, and date/color pickers. To do that, we'll need to fully specify the component parts, states, and behaviors of the built-in controls, as well as necessary accessibility requirements, and provide test suites to ensure compatibility. We'll also implement polyfills for our extensible web UI controls.
Open Vulnerability Assessment Scanner.
OpenVAS is a full-featured vulnerability scanner. Its capabilities include unauthenticated and authenticated testing, various high-level and low-level internet and industrial protocols, performance tuning for large-scale scans and a powerful internal programming language to implement any type of vulnerability test.
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Openly Licensed Images, Audio and More. Explore more than 600 million creative works
An extensive library of free stock photos, images, and audio, available for free use.
Town Square for Open Social Media. All decentralised networks—one timeline.
Crosspost everywhere—At once. Evolves with the new trends in social media. Preserve your social presence with floating identity.
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The Context File System for AI Agents. A Context DataBase for AI Agents.
Memory, Resource, Skill. Everything is a File.
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