head to head · open source
haystack vs dtm
haystack has 26,926 GitHub stars, 3,390 forks, 143 open issues and last shipped yesterday. dtm has 10,933 stars, 997 forks, 87 open issues and last shipped 10 months ago. haystack leads on adoption by 146% (26,926 vs 10,933 stars). haystack is written in Python under Apache-2.0; dtm is written in Go under BSD-3-Clause. haystack has attracted 13% as many forks as stars, dtm 9%. 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.
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Side by side
| haystack | dtm | |
|---|---|---|
| GitHub stars | ★ 27K | ★ 11K |
| License | Apache-2.0 | BSD-3-Clause |
| Written in | Python | Go |
| Last push | 2026-11-04 | 2026-01-03 |
| Forks | ⑂ 3.4K | ⑂ 997 |
| 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 dtm if
- You want the dtm feature set and don't need the biggest community
- You prefer the BSD-3-Clause license terms
- Your stack matches Go
- You evaluated both and dtm 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 dtm
English 简体中文 Distributed Transactions Manager What is DTM DTM is a distributed transaction framework which provides cross service eventual data consistency. It provides saga, tcc, xa, 2 phase message, outbox, workflow patterns for a variety of application scenarios. It also supports multiple languages and multiple store engine to form up a transaction as following: Who's using DTM (partial) Tencent Bytedance Ivydad More Features Support for multiple transaction modes: SAGA, TCC, XA, Workflow, Outbox Multiple languages support: SDK for Go, Java, PHP, C , Python, Nodejs Better Outbox: 2 phase messages, a more…
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Frequently asked questions
Is haystack or dtm more popular?
haystack has 26,926 GitHub stars and dtm has 10,933. haystack has the larger community by that measure.
Are haystack and dtm free?
Both are open source. haystack is licensed under Apache-2.0 and dtm under BSD-3-Clause. Neither carries a licence fee.
What is the difference between haystack and dtm?
haystack is written in Python and dtm in Go. 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 dtm?
Choose haystack if you want the larger community (26,926 stars) or its Apache-2.0 licence terms. Choose dtm if its feature set, stack or BSD-3-Clause licence fits better. Both are self-hostable.