head to head · open source
haystack vs dmux
haystack has 26,924 GitHub stars, 3,388 forks, 143 open issues and last shipped yesterday. dmux has 1,815 stars, 138 forks, 39 open issues and last shipped 3 months ago. haystack leads on adoption by 1,383% (26,924 vs 1,815 stars). haystack is written in Python under Apache-2.0; dmux is written in HTML under MIT. haystack has attracted 13% as many forks as stars, dmux 8%. haystack was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (ai, 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 | dmux | |
|---|---|---|
| GitHub stars | ★ 27K | ★ 1.8K |
| License | Apache-2.0 | MIT |
| Written in | Python | HTML |
| Last push | 2026-11-04 | 2026-08-16 |
| Forks | ⑂ 3.4K | ⑂ 138 |
| 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 dmux if
- You want the dmux feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches HTML
- You evaluated both and dmux 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 dmux
Parallel agents with tmux and worktrees Manage multiple AI coding agents in isolated git worktrees. Branch, develop, and merge — all in parallel. Documentation · Getting Started · Issues Language: English 日本語 Install Quick Start Press n to create a new pane, type a prompt, pick one or more agents (or none for a plain terminal), and dmux handles the rest — worktree, branch, and agent launch. On first run, dmux can configure a primary inference provider/model and an optional backup. It discovers models from the provider when possible and supports API key providers, custom OpenAI…
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Frequently asked questions
Is haystack or dmux more popular?
haystack has 26,924 GitHub stars and dmux has 1,815. haystack has the larger community by that measure.
Are haystack and dmux free?
Both are open source. haystack is licensed under Apache-2.0 and dmux under MIT. Neither carries a licence fee.
What is the difference between haystack and dmux?
haystack is written in Python and dmux in HTML. 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 dmux?
Choose haystack if you want the larger community (26,924 stars) or its Apache-2.0 licence terms. Choose dmux if its feature set, stack or MIT licence fits better. Both are self-hostable.