head to head · open source
haystack vs oh-my-agent
haystack has 26,559 GitHub stars, 3,153 forks, 143 open issues and last shipped yesterday. oh-my-agent has 1,314 stars, 149 forks, 0 open issues and last shipped today. haystack leads on adoption by 1,921% (26,559 vs 1,314 stars). haystack is written in Python under Apache-2.0; oh-my-agent is written in TypeScript under MIT. haystack has attracted 12% as many forks as stars, oh-my-agent 11%. oh-my-agent was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (ai-agents), so they are genuine substitutes rather than adjacent tools.
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
| haystack | oh-my-agent | |
|---|---|---|
| GitHub stars | ★ 27K | ★ 1.3K |
| License | Apache-2.0 | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-09-19 | 2026-09-20 |
| Forks | ⑂ 3.2K | ⑂ 149 |
| 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-agent if
- You want the oh-my-agent 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-agent fits your workflow better
About haystack
Haystack is an open source AI orchestration framework written in Python under the Apache 2.0 licence, for building context engineered, production ready large language model applications as modular pipelines and agent workflows with explicit control over retrieval, routing, memory, and generation, and it is aimed at developers and teams building scalable agents, retrieval augmented generation, multimodal applications, semantic search, question answering, and conversational systems.
read the full haystack overview →
About oh-my-agent
oh my agent is an MIT licensed TypeScript multi agent harness for developers who run agentic coding across Claude Code, Codex, Cursor, and 10+ runtimes and need to verify that agent runs actually did the work by inspecting artifacts rather than trusting the agent's own summary.
read the full oh-my-agent overview →
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Frequently asked questions
Is haystack or oh-my-agent more popular?
haystack has 26,559 GitHub stars and oh-my-agent has 1,314. haystack has the larger community by that measure.
Are haystack and oh-my-agent free?
Both are open source. haystack is licensed under Apache-2.0 and oh-my-agent under MIT. Neither carries a licence fee.
What is the difference between haystack and oh-my-agent?
haystack is written in Python and oh-my-agent 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-agent?
Choose haystack if you want the larger community (26,559 stars) or its Apache-2.0 licence terms. Choose oh-my-agent if its feature set, stack or MIT licence fits better. Both are self-hostable.