The Commercial Open Source Software (COSS) Directory

Cosmic Stack is a research and product lab building agents, infrastructure, and tools for the next decade of software. The company operates across four surfaces: Labs (experimental prototypes), Open Source (hardened tools including Mercury Agent), Incubator (founder-led companies built on the agent stack), and Cloud (managed runtime for agents). Its flagship product, Mercury Agent, is a terminal-native AI coding agent with 40+ tools, persistent memory, and a provider-agnostic runtime, licensed under MIT.

SereneDB is a real-time search analytics database that unifies Elasticsearch-like search and ClickHouse-like analytics in a single, Postgres-compatible database. Search is a first-class citizen of the query engine, powered by IResearch, an open-source C++ information retrieval library. SereneDB is designed to turn lakehouses, databases, and object storage into a Postgres-compatible layer for real-time search, analytics, and AI agent workloads without requiring data movement.

Anaconda provides a distribution of the Python and R programming languages for scientific computing, that aims to simplify package management and deployment. It is built on technologies such as Python and R, and primarily serves enterprise customers.

Kilo Code provides an AI coding agent for VS Code. Its technology combines features of Cline, Roo, and its own additions.

Nous Research is the creator of the Hermes agent. It develops human-centric simulators and models through its cutting edge research in natural language processing. Its primary focus areas include large language model architecture, data synthesis, and output steering, all aimed at aligning AI systems with real-world user experiences.

Chatto is a fast, fully-featured, self-hostable chat application built for teams and communities who want to own their conversations. Distributed as a single binary with no external dependencies, it supports real-time messaging, voice and video calls with screen sharing, fine-grained roles and permissions, and modular server-side extensions. Chatto encrypts message text and account data with per-user keys and supports crypto-shredding on account deletion. A hosted cloud offering, Chatto Cloud, is also available for teams that prefer managed infrastructure.

DeepSeek is an AI company focused on developing and applying advanced artificial intelligence technologies. Their core product is built on large language models and aims to serve enterprise clients. They specialize in tools and solutions for various industries.

Automattic is a company that builds products for the web, including WordPress.com, WooCommerce, Jetpack, and more. Its core products are built on technologies like PHP, JavaScript, and MySQL, and it primarily serves both consumers and enterprises.

Synthetic Sciences is an AI research lab building foundation models for scientific discovery. The company develops OpenScience, an open-source AI workbench that enables researchers to delegate the full research loop — literature review, hypothesis generation, experiment design, code execution, and paper drafting — to autonomous AI co-scientists, and Atlas, a closed-source infrastructure platform for research collaboration and model training.

Deta Surf is an open-source, local-first AI notebook and browser that brings files, web pages, and AI directly into a unified personal workspace. The platform allows users to generate notes from media, ask questions across their content, and integrate with LLMs of their choice, including local models, while keeping all data stored on-device in open formats.

Bespoke Labs is an applied AI research lab that builds reinforcement learning environments and data curation infrastructure for training and evaluating long-horizon AI agents. The company develops open-source tools including Curator, a synthetic data curation framework, and contributes to benchmarks such as Terminal-Bench and OpenThoughts to advance the reliability of AI agents in production environments.

DoryLab develops Dory, an AI-native SQL client for developers and data teams. Dory provides a multi-database SQL workspace where users can write queries, browse schemas, visualize results, and save reusable queries. AI agents can connect to Dory through MCP (Model Context Protocol) to run SQL, explore schemas, and create database workspaces that humans can then review, edit, and continue. Dory supports a wide range of databases including PostgreSQL, MySQL, ClickHouse, SQLite, DuckDB, Snowflake, SQL Server, and Oracle.

Prisma provides an open-source ORM (Object-Relational Mapping) tool that simplifies database management for developers. It supports various databases and programming languages, enabling efficient data modeling and querying.

Bluesky is a decentralized social media platform that uses the Authenticated Transfer Protocol (AT Protocol) to create an open-source ecosystem for social media, allowing users to control their own data and algorithms.

Chainguard provides security solutions for software supply chains, focusing on securing open-source projects and ensuring the integrity of software components.

Red Hat is a leading provider of enterprise open source solutions, using a community-powered approach to deliver reliable and high-performing Linux, hybrid cloud, container, and Kubernetes technologies. The company serves enterprises by offering a wide range of products and services that help organizations develop applications, integrate IT systems, and automate processes. Red Hat's core technologies are built on Linux, Kubernetes, and cloud computing.

holaOS is an open-source AI workspace operating system built by Holaboss that enables users to create persistent, long-running AI workspaces. Users describe an ongoing job, and holaOS builds a workspace with goals, context, rules, and scheduled execution. The desktop application runs locally on macOS and Windows, supports multiple LLMs via bring-your-own-key, and integrates with tools such as Gmail, GitHub, Notion, Twitter, and Reddit. Each workspace accumulates outputs and corrections across runs, allowing work to compound over time rather than restart with each session.

Ollama provides tools for building and managing AI models, focusing on ease of use and scalability. Their platform supports various AI frameworks and integrations.

Superlog is an open-core observability platform built on OpenTelemetry that uses AI agents to automate telemetry setup and incident resolution. It scans a codebase to instrument it with logs, traces, and metrics, groups noisy signals into incidents, and generates mergeable pull requests with proposed fixes. The platform is designed to minimize manual dashboard maintenance and alert fatigue for engineering teams.

Building Humane Technology is a public benefit organization that develops open-source frameworks, tools, and evaluation benchmarks to help technologists, designers, and product leaders build AI-driven technology that supports human well-being and minimizes harm. Its primary project, the HumaneBench Framework, provides benchmarking tools for evaluating AI models against humane principles. It also publishes the Humane Technology Framework, a collection of tools, guidelines, and resources for building technology that respects human well-being, autonomy, and dignity.

Aptabase is an open-source, privacy-first analytics platform for mobile, desktop, and web applications. It provides developers with lightweight SDKs for over ten frameworks—including Swift, Kotlin, Flutter, React Native, Electron, and Tauri—enabling them to track usage events and gain insights into how their apps are used without collecting personally identifiable information. Aptabase is operated by Sumbit Labs Limited and is self-hostable.

OpenClaw is an open-source personal AI agent platform that runs on the user's own machine and integrates with messaging apps such as WhatsApp, Telegram, Discord, and Slack. Originally created by Peter Steinberger in November 2025 under the name Clawd, the project became one of the fastest-growing open-source repositories in history, accumulating over 290,000 GitHub stars. In February 2026, Steinberger joined OpenAI and transitioned OpenClaw into an independent foundation to ensure it remains open and community-driven.

Entire is building the world's next developer platform for human-agent collaboration, where agents and humans can collaborate, learn, and ship software together. The company's first open-source product, Checkpoints, is a CLI tool that automatically captures AI agent context—reasoning, prompts, and decisions—on every Git commit, creating a searchable record of how code was written. Founded in 2025 by former GitHub CEO Thomas Dohmke and co-founders Georg Friedrich and Cole Driver, Entire raised a $60 million seed round at a $300 million valuation in February 2026.

Vercel is a platform for frontend developers, providing the frameworks, workflows, and infrastructure to build a faster, more personalized web. Their core product is built on technologies like JavaScript, React, and Next.js, and they serve businesses looking to improve their web performance and developer experience.

BetterAuth provides a robust set of open source authentication tools for SaaS apps that aim to make advanced, versatile authentication capabilities more accessible and user-friendly.

Vendo is an open-source embedded AI agent that software companies integrate into their products to let end customers automate work, build custom views, and connect external tools. The agent operates through the host application's own API, renders within the host's brand and component library, and enforces the host's permission policies on every action. Vendo is self-hosted and free under the Apache-2.0 license, with a managed cloud offering in development.

BlueRock provides security and observability for agentic AI systems operating in production environments. The company's platform delivers real-time visibility, runtime guardrails, and trust context across the full agentic action path — from model decision through agent actions, tool calls, MCP server interactions, and data access. BlueRock's open-source NOVA Microhypervisor provides hardware-level isolation for AI infrastructure, while its MCP Python Hooks offer lightweight runtime monitoring for Python-based MCP servers.

Immich is a high-performance, self-hosted photo and video management solution that enables users to back up, organize, browse, and search their photos and videos on their own server, without relying on cloud providers. Originally created by Alex Tran in 2022 as an open-source alternative to Google Photos, the project joined FUTO in May 2024, allowing the core team to work on it full-time. Immich is licensed under AGPL-3.0 and supports machine learning features such as facial recognition and semantic search.

Ververica is a stream processing company founded by the original creators of Apache Flink that provides a unified streaming data platform powered by VERA, a cloud-native engine. The company offers enterprise-grade solutions for real-time data processing, analytics, and stream processing applications through self-managed, managed service, and bring-your-own-cloud deployment options.

n8n is an open-source workflow automation platform that enables developers to create and manage automated workflows across various systems. Their tools support integration with multiple data sources and applications.