Devtoolwatch BoardHaystack review
Open-source AI orchestration framework for building context-engineered, production-ready LLM applications. Design modular pipelines and agent workflows with explicit control over retrieval, routing, memory, and generation. Built for scalable agents, RAG, multimodal applications, semantic search, and conversational systems.
- 26.9kGitHub stars
- +71new stars, week of Oct 25
- 140.8kdownloads a week, +3% vs 4-week avg
- #28in Agent frameworks this week
Haystack at a glance
- Category
- Agent frameworks
- Website
- haystack.deepset.ai
Is Haystack growing? Usage data
In the week of Oct 25–31, 2026, Haystack ranked #300 on the Devtoolwatch Board and #28 in Agent frameworks, with a momentum score of 31 out of 100. Its main package had 140.8k downloads that week, +3% against its own 4-week average.
Show the weekly numbers
| Week of | New stars |
|---|---|
| Aug 9, 2026 | 76 |
| Aug 16, 2026 | 76 |
| Aug 23, 2026 | 79 |
| Aug 30, 2026 | 71 |
| Sep 6, 2026 | 69 |
| Sep 13, 2026 | 75 |
| Sep 20, 2026 | 64 |
| Sep 27, 2026 | 47 |
| Oct 4, 2026 | 90 |
| Oct 11, 2026 | 62 |
| Oct 18, 2026 | 73 |
| Oct 25, 2026 | 71 |
The Board ranks tools by four signals each week: new stars, new stars for the repo's size, added downloads and download growth beyond the market. How the ranking works.
Haystack alternatives
Other AI agent frameworks on the Board in the week of Oct 25–31, 2026, by momentum:
| Rank | Tool | Stars | Downloads/wk |
|---|---|---|---|
| #1 | Harness²Harness² is a Python framework from Google Research for recursive agent harnessing, refining an agent's prompts, tools, memory and… | 21.7k | – |
| #2 | HyperFramesHyperFrames is an open-source framework that turns HTML, CSS, media, and seekable animations into deterministic MP4 videos, built for AI… | 76.6k | 1.5M |
| #3 | AgentScopeAgentScope is a Python agent framework with an SDK for building ReAct agents and an agent service backend with a web UI. | 35k | 51.4k |
| #4 | AG-UIAG-UI is an open, event-based protocol that standardizes how AI agents connect to user-facing frontend applications. | 16.9k | 4.6M |
| #5 | LangGraphLangGraph is a low-level orchestration framework and runtime for building, managing, and deploying long-running, stateful agents in… | 44.2k | 18.5M |
| #6 | BifrostOpen-source, high-performance AI gateway that works as your LLM gateway, MCP gateway and agent gateway. One OpenAI-compatible API for… | 9.3k | – |
Haystack FAQ
How popular is Haystack?
Haystack has 26.9k GitHub stars as of Nov 1, 2026. It gained 71 new stars in the week of Oct 25–31, 2026, against a 12-week average of 71 a week. Its main package had 140.8k downloads that week, +3% against its own 4-week average. That made it #28 among AI agent frameworks on the Devtoolwatch Board.
What are the best alternatives to Haystack?
Other AI agent frameworks on the Devtoolwatch Board in the week of Oct 25–31, 2026, by momentum: Harness² (#1), HyperFrames (#2), AgentScope (#3), AG-UI (#4), LangGraph (#5). The alternatives table above has their numbers.
Sources
Haystack README badge
Maintainers can show the tool's weekly Board rank in their README:
[](https://index.devtoolwatch.com/tools/haystack/)How this page is made: Devtoolwatch writes each review from the project's README, releases, package metadata and website, with an AI model, then checks every claim against the source it cites and drops what the sources don't support. The numbers come from Devtoolwatch's daily GitHub snapshots, GitHub's stargazer history, and the npm and PyPI download APIs. Spotted an error? Email [email protected].