head to head · open source
OpenCode vs ACI.dev
OpenCode has 223,899 GitHub stars, 30,104 forks, 5,727 open issues and last shipped yesterday. ACI.dev has 4,929 stars, 486 forks, 63 open issues and last shipped 2 days ago. OpenCode leads on adoption by 4,442% (223,899 vs 4,929 stars). OpenCode is written in TypeScript under MIT; ACI.dev is written in Python under Apache-2.0. OpenCode has attracted 13% as many forks as stars, ACI.dev 10%. OpenCode was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| OpenCode | ACI.dev | |
|---|---|---|
| GitHub stars | ★ 224K | ★ 4.9K |
| License | MIT | Apache-2.0 |
| Written in | TypeScript | Python |
| Last push | 2026-11-02 | 2026-11-01 |
| Forks | ⑂ 30K | ⑂ 486 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick OpenCode if
- You weight community size — 224K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick ACI.dev if
- You want the ACI.dev feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and ACI.dev fits your workflow better
About OpenCode
The open source AI coding agent. English 简体中文 繁體中文 한국어 Deutsch Español Français Italiano Dansk 日本語 Polski Русский Bosanski العربية Norsk Português (Brasil) ไทย Türkçe Українська বাংলা Ελληνικά Tiếng Việt Installation [!TIP] Remove versions older than 0.1.x before installing. Desktop App (BETA) OpenCode is also available as a desktop application. Download directly from the releases page or opencode.ai/download. Installation Directory The install script respects the following priority order for the installation path: 1. $OPENCODE INSTALL DIR Custom installation directory 2. $XDG BIN DIR XDG Base Directory…
read the full OpenCode overview →
About ACI.dev
ACI: Open Source Infra to Power Unified MCP Servers and VibeOps [!NOTE] This repo is for the ACI.dev platform. If you're looking for the Unified MCP server built with ACI.dev, see aci mcp. ACI.dev is the open source tool calling platform that hooks up 600+ tools into any agentic IDE or custom AI agent. It gives agents intent aware access to tools with multi tenant auth, granular permissions, and dynamic tool discovery—exposed as either direct function calls or through a Unified Model Context Protocol (MCP) server . Examples: Instead of writing separate OAuth flows and API clients for Google Calendar, Slack, and…
read the full ACI.dev overview →
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Frequently asked questions
Is OpenCode or ACI.dev more popular?
OpenCode has 223,899 GitHub stars and ACI.dev has 4,929. OpenCode has the larger community by that measure.
Are OpenCode and ACI.dev free?
Both are open source. OpenCode is licensed under MIT and ACI.dev under Apache-2.0. Neither carries a licence fee.
What is the difference between OpenCode and ACI.dev?
OpenCode is written in TypeScript and ACI.dev in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, OpenCode or ACI.dev?
Choose OpenCode if you want the larger community (223,899 stars) or its MIT licence terms. Choose ACI.dev if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.