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Contrabass: A project-level orchestrator for AI coding agents — Go & Charm stack implementation of OpenAI's Symphony. It is listed under Development & Code on AI Registry as a free tool.
The tools below are approved listings in the same category, ordered by how closely their tags match Contrabass. This is an automatic list. We have not written a researched verdict for Contrabass yet, so treat it as a shortlist and check each vendor's pricing page before switching.
Built from each tool's listing. Vendors can update their own listing after claiming it.
Open-source AI Agent platform for teams.
This platform is an open source, self hosted AI agent platform that the vendor describes as a workstation rather than a chat window. Each teammate gets an independent, isolated agent workspace where the agent can read and write files, run shell commands, call MCP tool chains and internal APIs, search a knowledge base, ...
Open-source AI customer support system.
AgentDesk is an open source AI customer support system that combines live chat, knowledge retrieval, human handoff and ticket workflows in one self hosted runtime. An AI agent answers customers first using the knowledge base and available tools, hands the conversation to a human with its context intact when it cannot h...
Open source, terminal-first AI coding agent with fully transparent multi-model routing.
Albatross is an open source coding agent that runs in the terminal and routes each task across several models at the execution layer. A selector model assigns low, medium or high tiers for the orchestrator and coder roles, adds review and security models, and switches the active coding model accordingly. Every routing ...
Command Code AI — the best coding agent for open models.
Command Code is a coding agent built to get the most out of open models. It runs in the terminal and as a desktop app for macOS, Linux and Windows, writing, testing, debugging and refactoring code while repairing malformed tool calls on every model, keeping token use low on read and shell tools, and maintaining high pr...
DeepSeek-native AI coding agent for your terminal.
DeepSeek Reasonix is an open source AI coding agent designed for long autonomous runs that stay reviewable. A single local engine sits behind four front ends: a full screen terminal interface, a desktop app for macOS, Windows and Linux, a local web UI started with reasonix serve, and editor integration for VS Code and ...
A minimalist, terminal-native coding agent written in C.
This tool is a terminal native coding agent written in C. It ships as a single native binary with a small dependency set, starts instantly and uses only a few megabytes of memory, which leaves more RAM free for local models. It runs on Linux, macOS, FreeBSD and OpenBSD, and on Windows under WSL. It is aimed at develop...