OpenBMC is a Linux distribution for management controllers used in devices such as servers, top of rack switches or RAID appliances. It uses Yocto, OpenEmbedded, systemd, and D-Bus to allow easy customization for your platform.

OpenBMC @ GitHub.

OpenCATS is the open source ATS that helps you manage your recruitment process. With its customizable platform, you can streamline your recruitment process, attract top talent, and ultimately find the perfect candidate for your organization.

OpenCATS @ GitHub.

Open source cost monitoring for cloud native environments.

OpenCost is a vendor-neutral open source project for measuring and allocating infrastructure and container costs in real time. Built by Kubernetes experts and supported by Kubernetes practitioners, OpenCost shines a light into the black box of Kubernetes spend.

OpenCost @ GitHub.

OpenCVE is the easiest way to track CVE updates and be alerted about new vulnerabilities.

OpenCVE is a platform used to locally import the list of CVEs and perform searches on it (by vendors, products, CVSS, CWE...). Users subscribe to vendors or products, and OpenCVE alerts them when a new CVE is created or when an update is done in an existing CVE.

• OpenCVE @ GitHub.

Related contents:

• Veille en vulnérabilités avec OpenCVE.io @ Net Security :fr:.

Object-store native databases built on a common foundation. Simple to operate. Impossible to outgrow.

OpenData is a collection of open source databases built on a common, object-native storage and infrastructure foundation. This shared foundation means every database has a virtually identical operational profile, which makes our database fleet materially easier and cheaper to operate than alternatives.

• OpenData @ GitHub.

Related contents:

• the broken economics of databases @ bits&pages.

OpenDaylight (ODL) is a modular open platform for customizing and automating networks of any size and scale.

The OpenDaylight project is an open source platform for Software Defined Networking (SDN) that uses open protocols to provide centralized, programmatic control and network device monitoring.

Much as your operating system provides an interface for the devices that comprise your computer, OpenDaylight provides an interface that allows you to control and manage network devices.

OpenDaylight @ GitHub.

Serverless Functions Made Simple. OpenFaaS brings Functions As A Service (FaaS) to Kubernetes.

OpenFaaS® makes it simple to deploy both functions and existing code to Kubernetes

OpenFaaS @ GitHub

Interactive game and app development library for TS, Haxe and JS.

OpenFL implements the Flash Player API, but goes everywhere that browser plug-ins cannot. Use a familiar and battle-tested workflow to accelerate development. You can even leverage Adobe Animate as an integrated art pipeline.

• OpenFL @ GitHub.

🔎 Static code analysis engine to find security issues in code. Opengrep, a fork of Semgrep, under the LGPL 2.1 license.

Opengrep is an ultra-fast static analysis tool for searching code patterns with the power of semantic grep. Analyze large code bases at the speed of thought with intuitive pattern matching and customizable rules. Find and fix security vulnerabilities, fast – ship more secure code.

Opengrep supports 30+ languages, including:

Apex · Bash · C · C++ · C# · Clojure · Dart · Dockerfile · Elixir · HTML · Go · Java · JavaScript · JSX · JSON · Julia · Jsonnet · Kotlin · Lisp · Lua · OCaml · PHP · Python · R · Ruby · Rust · Scala · Scheme · Solidity · Swift · Terraform · TypeScript · TSX · YAML · XML · Generic (ERB, Jinja, etc.)

• Opengrep @ GitHub.
• Opengrep Rules @ GitHub.

The Open Platform for Cloud Coding Agents.

The self-hosted developer control center for coding agents and automations.

Run OpenHands, Claude Code, Codex, Gemini, or any ACP-compatible agent across local, remote, and cloud backends.

• OpenHands @ GitHub.

The Open Home Foundation fights for the fundamental principles of privacy, choice, and sustainability for smart homes. And for every person who lives in one. It does this by supporting the development of open-source projects, and open connectivity and communication standards.

Related contents:

• Episode 6: Paulus Schoutsen (Home Assistant) @ The Self-Host Cast.

OpenHue API is an open-source project that provides a comprehensive OpenAPI specification for the Philips Hue REST API

• OpenHue @ GitHub.
• OpenHue – Maitrisez l’éclairage connecté de vos Philips Hue avec cette API open-source @ Korben :fr:.

The Open-Source Idea Management Software.

Harness ideas to improve your products, services and digital experiences. Collect and managing ideas from customers and employees. Out of the box it provides an ideation community where citizens, employees, clients or any other group of stake holders can create, discuss, rate and promote ideas.

• OpenideaL @ GitHub.

Community-driven illumos Distribution. The OpenIndiana project is the open source community which develops, maintains, and supports the OpenIndiana distribution, an illumos based Unix-like operating system derived from OpenSolaris. The purpose of the OpenIndiana Project is to ensure the continued availability of an openly developed distribution based on OpenSolaris. The OpenIndiana project is also a continuation of the collaborative effort and community spirit of the OpenSolaris project.

A natural language interface for computers.

Open Interpreter lets LLMs run code (Python, Javascript, Shell, and more) locally. You can chat with Open Interpreter through a ChatGPT-like interface in your terminal by running $ interpreter after installing.

• Open Interpreter @ GitHub.

OpenLDAP Software is an open source implementation of the Lightweight Directory Access Protocol.

• OpenLDAP @ GitHub.

Related contents:

• How LDAP works @ growing<SWE/>.

openleaf is a minimalist, browser-based rich text editor that lets you start writing instantly without signup, downloads, or configuration. Just go to any URL and start typing!

• openleaf @ GitHub.

LLM génératifs ouverts et performants.

Le Consortium OpenLLM France réunit 17 acteurs qui se sont rassemblés dans le prolongement de la création de la communauté OpenLLM France qui fédère à ce jour un écosystème de près de 200 entités (laboratoires publics de recherche, fournisseurs potentiels de données, acteurs technologiques spécialisés, fournisseurs de cas d'usage...). Ces acteurs échangent de manière publique et transparente depuis le début de l’été 2023 sur le serveur Discord de la communauté.

The Open Mainframe Project was founded in 2015, as a focal point for deployment and use of Linux and Open Source in a mainframe computing environment.

The open network attached storage solution. openmediavault is the next generation network attached storage (NAS) solution based on Debian Linux. It contains services like SSH, (S)FTP, SMB/CIFS, DAAP media server, RSync, BitTorrent client and many more. Thanks to the modular design of the framework it can be enhanced via plugins.

Internet connection bonding. OpenMPTCProuter use MultiPath TCP (MPTCP) to really aggregate multiple Internet connections and OpenWrt.

Take Control of Your Learning. Privately.

A powerful open-source, AI-powered note-taking/research platform that respects your privacy. An Open Source implementation of Notebook LM with more flexibility and features.

• Open Notebook @ GitHub.

Related contents:

• Open Notebook: A True Open Source Private NotebookLM Alternative? @ KD nuggets.

Policy-based control for cloud native environments. Flexible, fine-grained control for administrators across the stack.

Open Policy Agent (OPA) is an open source, general-purpose policy engine that enables unified, context-aware policy enforcement across the entire stack.

• Open Policy Agent @ GitHub.

Related contents:

• Guardrails for Your Cloud: A Simple Guide to OPA and Terraform @ Sami Banerjee's Medium.
• Getting Open Policy Agent Up and Running @ The New Stack.
• Simplify Kubernetes Security With Kyverno and OPA Gatekeeper @ The New Stack.
• Automating policy enforcements for infrastructure using Open Policy Agent (OPA) in Terraform — Part 1 @ Ashay Maheshwari's Medium.
• Terraform governing with OPA @ DevOpsOnTheTrail.
• Blueprinting Security in CI/CD: Building Trust Through Open Source @ CD Foundation.
• From Kubernetes Gatekeeper to Full-Stack Governance with OPA @ Pulumi.
• Governing infrastructure as code using pattern-based policy as code @ AWS Security Blog.

OpenRAG is a comprehensive, single package Retrieval-Augmented Generation platform built on Langflow, Docling, and Opensearch.

Users can upload, process, and query documents through a chat interface backed by large language models and semantic search capabilities. The system utilizes Langflow for document ingestion, retrieval workflows, and intelligent nudges, providing a seamless RAG experience.

• OpenRAG @ GitHub.

Related contents:

• Veille #47 — L'actu de la semaine @ Camille Roux :fr:.
• OpenRAG - Le RAG clé en main qui vous évite 3 jours de galère @ Korben :fr:.

RDAP command line client. OpenRDAP is a command line client for the Registration Data Access Protocol, written in Go.

RDAP is a replacement for WHOIS, which provides domain name & IP address registration information in JSON format over HTTP.

OpenRDAP @ GitHub.

Open Responses is an open-source specification and ecosystem for building multi-provider, interoperable LLM interfaces based on the OpenAI Responses API. It defines a shared schema, and tooling layer that enable a unified experience for calling language models, streaming results, and composing agentic workflows—independent of provider.

• Open Responses @ GitHub.

Open platforms for robotics

We create open software and hardware platforms for robotics. Working with our global community, we offer three open platforms: ROS, Gazebo and Open-RMF. Program your robots with ROS, simulate them with Gazebo, interoperate your systems using Open-RMF. These platforms are widely used around the world, from production deployments to classroom projects. To learn more about how the community is using these platforms to create valuable solutions, see our community showcase.

Related contents:

• Episode #118: NOT a swarm! @ Changelog & Friends.

OpenRsync is a FREE, easy to use implementation of the rsync program.

• OpenRsync @ GitHub.

Related contents:

• rsync replaced with openrsync on macOS Sequoia @ Der Flounder.

NIST Certified SCAP 1.2 toolkit. The oscap program is a command line tool that allows users to load, scan, validate, edit, and export SCAP documents.

The OpenSCAP ecosystem provides multiple tools to assist administrators and auditors with assessment, measurement and enforcement of security baselines. We maintain great flexibility and interoperability, reducing costs of performing security audits.

• OpenSCAP @ GitHub.

Related contents:

• Auditez la sécurité de vos serveurs avec OpenScap @ Culture et Outils DevSecOps :fr:.

Your team’s control room for coding agents.

Self-hosted agent-infrastructure server: a web UI plus Slack, Linear, Plain, and GitHub agents, driving coding sessions through the Pi engine in git worktrees on your own box, or in isolated sandboxes. Supports multiple Codex and Claude subscriptions and model APIs.

• Open Session @ GitHub.

Develop, Host, and Scale Your Apps in the Cloud The Open Hybrid Cloud Application Platform by Red Hat

Free, Open, and Award-Winning Video Editor for Linux, Mac, and Windows! A free, open-source video editor that’s easy to use, quick to learn, and surprisingly powerful.

• OpenShot Video Editor @ GitHub.

The Free & OpenSource Alternative to Docusign.

Seal the Deal, Openly. Your ultimate open source PDF E-Signature Solution. Transform the Way You Sign, Store, and Secure Your Documents. All in One Place - All for Free.

• OpenSign @ GitHub.

Discover 400+ popular open source alternatives to your proprietary SaaS

Simple Color System for Complex Digital Interfaces.

Carefully picked colors to match with your interfaces challenges.

Agentic Alert Investigation for Production Pipelines.

Automated root cause analysis before your team gets paged. Build your own AI SRE agents. The open source toolkit for the AI era ✨

The open-source framework for AI SRE agents, and the training and evaluation environment they need to improve. Connect the 60+ tools you already run, define your own workflows, and investigate incidents on your own infrastructure.

• OpenSRE @ GitHub.

The Most Widely Deployed Open Source Cloud Software in the World. Deployed by thousands. Proven production at scale. OpenStack is a set of software components that provide common services for cloud infrastructure.

OpenPrinter is a repairable, compact, and robust printer designed to last.

Fully repairable and equipped with a refillable ink system, it adapts to your needs while reducing your printing costs.

Easy to maintain, it offers a sustainable, economical, and eco-friendly alternative to traditional printers.

🌟 OpenVoiceOS is an open-source platform for smart speakers and other voice-centric devices.

OpenVoiceOS is a community-driven, open-source voice AI platform for creating custom voice-controlled ​interfaces across devices with NLP, a customizable UI, and a focus on privacy and security.

• Open Voice OS core @ GitHub.

Open vSwitch is a production quality, multilayer virtual switch licensed under the open source Apache 2.0 license. It is designed to enable massive network automation through programmatic extension, while still supporting standard management interfaces and protocols (e.g. NetFlow, sFlow, IPFIX, RSPAN, CLI, LACP, 802.1ag). In addition, it is designed to support distribution across multiple physical servers similar to VMware's vNetwork distributed vswitch or Cisco's Nexus 1000V.

• Open vSwitch @ GitHub.

Related contents:

• Connecter un conteneur Podman à Open vSwitch @ Nicolas Massé :fr:.

Self-hosted platform to unify wearable health data through one AI-ready API. Unified health data with AI-powered insights.

Connect Garmin, Apple Health, Polar, Suunto and more through a single, open-source API. Build intelligent health applications with natural language automations.

• Open Wearables @ GitHub.

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.

• web-eval-agent MCP Server @ GitHub.

A local https proxy server using docker as backend.

• Ophiuchi @ GitHub.
• Lundi 01 Juillet 2024 @ RudeOps :fr:.

The fast, Open Source and easy-to-use solver. Solve planning and scheduling problems with OptaPlanner.

A fast, easy-to-use, open source AI constraint solver for software developers

• OptaPlanner @ GitHub.

Related contents:

• How I built an AI company to save my open source project @ timefold.

OrangeHRM is a comprehensive Human Resource Management (HRM) System that captures all the essential functionalities required for any enterprise.

• OrangeHRM @ GitHub.

Every layer, exactly where you want it. G-code generator for 3D printers (Bambu, Prusa, Voron, VzBot, RatRig, Creality, etc.)

OrcaSlicer is a free, open-source slicer for FDM 3D printers. Calibration tools built in, per-feature control over every print move, and tuned profiles for hundreds of printers — on Windows, macOS, and Linux.

• OrcaSlicer @ GitHub.

Related contents:

• OrcaSlicer - Powerful, Open Source 3d Printer slicing and control @ Awesome Open Source's YouTube.

Headless cloud-native authentication and identity management written in Go. Scales to a billion+ users. Replace Homegrown, Auth0, Okta, Firebase with better UX and DX. Passkeys, Social Sign In, OIDC, Magic Link, Multi-Factor Auth, SMS, SAML, TOTP, and more. Runs everywhere, runs best on Ory Network.

Ory Kratos is an API first identity and user management system for cloud native applications. It centralizes login, registration, recovery, verification, and profile management flows so your services consume them instead of reimplementing them.

• Ory Kratos @ GitHub.

Related contents:

• Keycloak vs Ory @ Cerbos.

API-first Identity Management, Authentication and Authorization. For Secure, Global, GDPR-compliant Apps. The New Identity Stack you have been waiting for.

Traditional IAM solutions do not scale, they are not easy to customize, they are limited in their deployment models, and they don't meet your or your customers' needs

• Ory @ GitHub.

Track your OSINT investigations

Osintracker is focused on OSINT investigations. It's a source-oriented application, primarily focused on keeping track of your online findings.

SQL powered operating system instrumentation, monitoring, and analytics. Easily ask questions about your Linux, Windows, and macOS infrastructure.

osquery is an operating system instrumentation framework for Windows, OS X (macOS), and Linux. The tools make low-level operating system analytics and monitoring both performant and intuitive.

osquery exposes an operating system as a high-performance relational database. This allows you to write SQL queries to explore operating system data. With osquery, SQL tables represent abstract concepts such as running processes, loaded kernel modules, open network connections, browser plugins, hardware events or file hashes.

• osquery @ GitHub.
• osquery @ Read the Docs.

Related contents:

• Hunting malware and malicious MCPs in memory on Kubernetes with FleetDM + Osquery + YARA @ HoldMyBeer.

World's Most Widely Used Host Intrusion Detection System - HIDS. OSSEC offers comprehensive host-based intrusion detection across multiple platforms including Linux, Solaris, AIX, HP-UX, BSD, Windows, Mac and VMware ESX.

API management on top of a reverse proxy.

Otoroshi is a layer of lightweight api management on top of a modern http reverse proxy written in Scala and developped by the MAIF OSS team. Otoroshi is designed to handle all the calls to and between your microservices without service locator and let you change configuration dynamicaly at runtime.

• Otoroshi @ GitHub.
• Otoroshi with LLM : Pilotez et sécurisez vos modèles d'IA @ CleverCloud's YouTube :fr:.

Developers want to focus on building scalable, secure applications. But it is overwhelming and time consuming to learn all the tooling required to develop locally, provision infrastructure, deploy the application, and secure the application. Otto abstracts away this complexity into one tool to handle all the aspects of development and deployment to any cloud platform. Maximize developer productivity, follow best practices, and automate operations with Otto.

Write like a rocket scientist with Overleaf —the collaborative, online LaTeX editor that anyone can use.

A web-based collaborative LaTeX editor.

• Overleaf @ GitHub.

Overview uses satellite and aerial imagery to demonstrate how human activity and natural forces shape our Earth. This perspective provides a powerful look at the planet where we live and the civilization we are creating. Through our daily posts, products, licensing, and collaborations we aim to inspire the Overview Effect.

OverTheBox s'appuie sur plusieurs connexions internet pour les agréger et vous offrir plus de débit. Avec une variété de connexions, le trafic internet est réparti automatiquement et cela permet aussi d'être tolérant à une coupure momentanée d’un accès. OverTheBox sécurise votre connectivité, mais également le contenu de vos échanges. Le chiffrement AES256 est activé par défaut jusqu'au réseau hébergeur d'OVH.

Open Virtualization Manager.

oVirt is a free open-source virtualization solution for your entire enterprise.

• oVirt Engine @ GitHub.

Related contents:

• 9 Best Virtualization Software for Linux @ It's FOSS.

Own-Mailbox is a personal email server you can run in your own home, with strong privacy protection measures integrated at its core. It provides self-hosted email addresses, or connects with your existing email address. In both cases, you can seamlessly send and receive encrypted emails from anywhere in the world, through the Own-Mailbox webmail interface, through a smartphone app, or using external email software (such as Thunderbird or Outlook).

OX App Suite contains all the components you need to centralize your digital life and access it from any device (laptop, PC, tablet, smartphone ... etc.) anywhere without any software to install:

The Darwin Information Typing Architecture (DITA) specification defines a set of document types for authoring and organizing topic-oriented information, as well as a set of mechanisms for combining, extending, and constraining document types.

Related contents:

• Issue 45 - Markdown is Holding You Back @ Code, Content, and Career with Brian Hogan.