The Commercial Open Source Software (COSS) Directory

Orca provides a desktop integrated development environment for running multiple AI coding agents in parallel. It combines isolated Git worktrees, agent terminals, browser tabs, diff review, and Git integration for local or remote developer workflows. The open-source Orca project is available under the MIT License for desktop, mobile, and remote environments.

Headroom Labs develops open-source context-compression software for AI agents. Its tools reduce repeated content in tool calls, database rows, file reads, and RAG payloads before model inference. The product is available as an agent wrapper, proxy, SDK, and MCP server, with enterprise VPC deployment and support options.

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.

TrueFoundry provides an enterprise AI gateway for governing access to LLMs, MCP servers, and agents. The platform combines gateway controls with LLM operations, model serving, tracing, and observability capabilities for enterprise teams. Its MIT-licensed TrueForge project is an open-source agent harness that connects models, tools, MCP servers, sandboxes, and infrastructure.

Synthefy develops foundation models for structured data. Its open-source Nori project provides training-free regression and predictive distributions for tabular data. The company also offers a managed API for deploying these models.

Arize AI provides an AI and agent engineering platform for building, observing, and evaluating AI applications. It helps close the loop between AI development and production.

Polar Signals Cloud offers always-on, zero-instrumentation continuous profiling for CPU, GPU, and Memory. This helps organizations improve software performance, understand incidents, and significantly lower infrastructure costs by identifying and optimizing inefficient code paths.

Dash0 is an OpenTelemetry-native observability platform that provides unified monitoring of logs, metrics, and traces for developers and SREs. Built on open standards including OpenTelemetry, PromQL, and Perses, it offers infrastructure monitoring, distributed tracing, log management, Kubernetes monitoring, and AI-powered SRE agents with transparent, usage-based pricing.

Temporal provides an open-source platform for durable execution, enabling developers to build applications that are resilient to failures. It ensures that workflows can be paused, resumed, and retried without losing state.

Modular is an AI infrastructure company that builds a unified compute platform for developing and deploying generative AI applications. Its products include MAX, a high-performance AI inference engine, and Mojo, a Python-compatible programming language designed for high-performance AI and systems programming on CPUs and GPUs.

OpenRouter provides a platform for accessing and using large language models (LLMs) through a unified API. It focuses on simplifying the integration of various LLMs for enterprises, enabling them to leverage AI technologies effectively.

ElectricSQL provides a data platform for building collaborative, multi-agent systems using Postgres sync. The platform offers a read-path sync engine that handles partial replication, data delivery, and fan-out from Postgres to client applications. It includes PGlite, an embeddable Postgres with real-time reactive bindings, and Durable Streams, a data primitive for the agent loop. ElectricSQL offers both a self-hosted open-source version and a managed cloud platform.

Databricks is a cloud-based data, analytics, and AI platform designed to help enterprises build, scale, and govern their data infrastructure. It pioneered the data lakehouse architecture, which combines the capabilities of data warehouses and data lakes for unified analytics. It serves enterprise customers.

LangWatch develops an AI-agent engineering platform for testing, evaluating, simulating, and monitoring LLM-powered applications. Its Apache-2.0 core can be self-hosted and supports developers building reliable agents.

TidesDB Corp develops TidesDB, a high-performance, embeddable key-value storage engine built on a log-structured merge-tree (LSM-tree) architecture. The engine supports full ACID transactions with MVCC across five isolation levels, optional object storage integration, and pluggable compression via Snappy, LZ4, and ZSTD. TidesDB can also serve as a pluggable storage engine for MariaDB through its TideSQL extension, and is compatible with Apache Kafka as a drop-in replacement for RocksDB.

HashiCorp provides infrastructure automation tools that enable organizations to provision, secure, connect, and run cloud infrastructure. Its products are built on technologies like Go and distributed systems principles, and they are used by enterprises to manage their cloud environments and automate infrastructure workflows. The company focuses on solving the challenges of multi-cloud environments.

Elastic provides a search-powered platform to transform data into actionable insights. Built on the Elasticsearch stack, Elastic's products are used for enterprise search, observability, and security. Elastic serves enterprises across various industries.

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.

Supabase is an open-source Firebase alternative that provides a dedicated Postgres database, authentication, instant APIs, edge functions, real-time subscriptions, storage, and vector embeddings.

Cofide provides an open-standards workload-identity platform that gives application workloads and AI agents verified, short-lived identities across cloud environments. Its platform uses cryptographic attestation and standards including SPIFFE, SPIRE, OAuth, and OIDC to replace static credentials, while Cofide Connect helps operate this identity layer across Kubernetes, hybrid, and multi-cloud deployments.

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.

Convex provides an open-source, backend-as-a-service platform enabling developers to build, sync, and scale real-time applications using only TypeScript. It manages database state, APIs, authentication, and workflows, eliminating frontend/backend boundaries and keeping apps automatically up to date.

YugabyteDB is an open-source distributed SQL database designed for high performance and scalability. It supports multi-region deployments and is compatible with PostgreSQL.

Zilliz is a vector database company that develops and maintains Milvus, an open-source vector database for AI applications. The company offers Zilliz Cloud, a fully-managed vector database service, and contributes to various open-source projects in the vector search and machine learning infrastructure space.

Moonshot AI is a Beijing-based artificial intelligence company founded in March 2023 that develops large language models under the Kimi brand. The company's flagship open-weight models, including Kimi K2 and Kimi K2.6, use a mixture-of-experts architecture with 1 trillion total parameters and 32 billion active parameters, and are released under a modified MIT license. Moonshot AI offers both a consumer-facing AI assistant at kimi.com and a developer API platform, with its models competing in coding, agentic tasks, and multimodal reasoning against leading Western AI systems. The company is backed by Alibaba, Tencent, Meituan, and other investors, and was valued at $20 billion following a $2 billion funding round in May 2026.

Hugging Face is a leading open-source AI community that provides tools for building machine learning applications. Their platform includes models, datasets, and collaboration tools for developers.

Anomaly, short for Anomaly Innovations Inc., is a software company that builds open-source developer tools. Anomaly is the provider of the open source AI coding agent OpenCode.

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.

Mistral AI is focused on developing advanced AI models and technologies. The company specializes in creating large language models (LLMs) to serve enterprise needs. Mistral AI's core products are built on cutting-edge AI/ML technologies.

GitLab is an open-core DevOps platform that helps teams develop, secure, and operate software. It includes features like version control, CI/CD, and project management, supporting millions of users worldwide.