head to head · open source
haystack vs oh-my-opencode-slim
haystack has 26,924 GitHub stars, 3,388 forks, 143 open issues and last shipped yesterday. oh-my-opencode-slim has 10,097 stars, 615 forks, 53 open issues and last shipped 2 days ago. haystack leads on adoption by 167% (26,924 vs 10,097 stars). haystack is written in Python under Apache-2.0; oh-my-opencode-slim is written in TypeScript under MIT. haystack has attracted 13% as many forks as stars, oh-my-opencode-slim 6%. haystack 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.
← all 20902 open source comparisons
Side by side
| haystack | oh-my-opencode-slim | |
|---|---|---|
| GitHub stars | ★ 27K | ★ 10K |
| License | Apache-2.0 | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-11-04 | 2026-11-03 |
| Forks | ⑂ 3.4K | ⑂ 615 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick haystack if
- You weight community size — 27K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick oh-my-opencode-slim if
- You want the oh-my-opencode-slim feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and oh-my-opencode-slim fits your workflow better
About haystack
🎉🎊✨ Haystack 3.0 is out! ✨🎊🎉 Read the announcement here! 🥳 🎈 🎆 🪅 🎇 🍾 🥂 🎁 🌈 Haystack is an open source AI orchestration framework for building production ready LLM applications in Python. Design modular pipelines and agent workflows with explicit control over retrieval, routing, memory, and generation. Build scalable RAG systems, multimodal applications, semantic search, question answering, and autonomous agents, all in a transparent architecture that lets you experiment, customize deeply, and deploy with confidence. Table of Contents Installation Documentation Features Haystack Enterprise: Support &…
read the full haystack overview →
About oh-my-opencode-slim
✨ oh my opencode slim ✨ Seven divine beings emerged from the dawn of code, each an immortal master of their craft, awaiting your command to forge order from chaos and build what was once thought impossible. Opencode Multi Agent Suite · Mix any models · Auto delegate tasks by Boring Dystopia Development English 简体中文 日本語 한국어 ✦ ✦ ✦ What's This Plugin oh my opencode slim is an agent orchestration plugin for OpenCode. It includes a built in team of specialized agents that can scout a codebase, look up fresh documentation, review architecture, handle UI work, and execute well scoped implementation tasks under one…
read the full oh-my-opencode-slim overview →
More in Infrastructure & Operations
Related comparisons
More Orchestration & Scheduling projects
Compare either of these against the rest of the Orchestration & Scheduling field.
Frequently asked questions
Is haystack or oh-my-opencode-slim more popular?
haystack has 26,924 GitHub stars and oh-my-opencode-slim has 10,097. haystack has the larger community by that measure.
Are haystack and oh-my-opencode-slim free?
Both are open source. haystack is licensed under Apache-2.0 and oh-my-opencode-slim under MIT. Neither carries a licence fee.
What is the difference between haystack and oh-my-opencode-slim?
haystack is written in Python and oh-my-opencode-slim in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, haystack or oh-my-opencode-slim?
Choose haystack if you want the larger community (26,924 stars) or its Apache-2.0 licence terms. Choose oh-my-opencode-slim if its feature set, stack or MIT licence fits better. Both are self-hostable.