The Haystack showcase

Discover the best projects built with Haystack

A hand-curated, daily-updated gallery of open-source projects. Browse the ecosystem, ranked by GitHub stars.

Most stars

AllAI & ML29DevTools13APIs2Blogs2Dashboards2

52 projects

The open source AI engineering platform for agents, LLMs, and ML models. MLflow enables teams of all sizes to debug, evaluate, monitor, and optimize production-quality AI applications while controlling costs and managing access to models and data. Maintained by mlflow on GitHub, where it has earned 27,368 stars from the community.

Django. Maintained by liangliangyy on GitHub, where it has earned 7,417 stars from the community.

Domain-driven e-commerce for Django. Maintained by django-oscar on GitHub, where it has earned 6,617 stars from the community.

mrdoc,online document system developed based on python. It is suitable for individuals and small teams to manage documents, wiki, knowledge and notes. ，、。. Maintained by zmister2016 on GitHub, where it has earned 3,227 stars from the community.

Horilla is a free and open source HR software. Maintained by horilla on GitHub, where it has earned 1,322 stars from the community.

OpenTelemetry Instrumentation for AI Observability. Maintained by Arize-ai on GitHub, where it has earned 1,255 stars from the community.

Django，，、，. Maintained by Hopetree on GitHub, where it has earned 1,228 stars from the community.

Here you can find all the Tutorials for Haystack. Maintained by deepset-ai on GitHub, where it has earned 375 stars from the community.

E-commerce by Django Rest Framework. Maintained by thomas545 on GitHub, where it has earned 298 stars from the community.

Additional packages (components, document stores and the likes) to extend the capabilities of Haystack. Maintained by deepset-ai on GitHub, where it has earned 208 stars from the community.

A simple Django project which uses MySQL as database. It has Signup, Login, Logout functionality. It lets you search for countries, cities, languages from the default mysql dump. Django's user table has been overridden to store user information. Maintained by Manisha-Bayya on GitHub, where it has earned 191 stars from the community.

Python toolkit for Chinese LLMs, with flexible batch capacity, structured real-time visulization and automated accumulation for streaming, and explicit feedback on vendor-native parameter validation. Maintained by kanchengw on GitHub, where it has earned 172 stars from the community.

Open Legal Data Platform. Maintained by openlegaldata on GitHub, where it has earned 156 stars from the community.

Easily deploy Haystack pipelines as REST APIs and MCP Tools. Maintained by deepset-ai on GitHub, where it has earned 152 stars from the community.

Fully working applications that demonstrate how to use Haystack to implement various use cases. Maintained by deepset-ai on GitHub, where it has earned 137 stars from the community.

Configurable indexing and other extras for Haystack (with ElasticSearch biases). Maintained by bennylope on GitHub, where it has earned 126 stars from the community.

A project worth exploring. Maintained by ExpediaDotCom on GitHub, where it has earned 113 stars from the community.

A project worth exploring. Maintained by fatihh92 on GitHub, where it has earned 113 stars from the community.

Self-hosted RAG search engine — 34 formats, BM25+hybrid search, multi-LLM (Gemini/OpenAI/Claude/Ollama), FastAPI + Docker, production-ready in 3 min. Maintained by flamehaven01 on GitHub, where it has earned 108 stars from the community.

Mistral + Haystack: build RAG pipelines that rock. Maintained by anakin87 on GitHub, where it has earned 107 stars from the community.

Haystack/OpenAI based chatbot curating a custom knowledgebase. Maintained by larsbaunwall on GitHub, where it has earned 104 stars from the community.

Haystack 4 Defs. Maintained by Project-Haystack on GitHub, where it has earned 84 stars from the community.

PProject-Haystack

Kuberbetes mutating webhook that injects a sidecar container to a pod. Maintained by ExpediaGroup on GitHub, where it has earned 78 stars from the community.

Generates a quiz from a URL. You can play the quiz, or let the LLM play it. Maintained by anakin87 on GitHub, where it has earned 72 stars from the community.

Haxall IoT framework. Maintained by haxall on GitHub, where it has earned 71 stars from the community.

Maximem Synap is the memory layer that makes AI agents remember. 92% LongMemEval, 93.2% on LOCOMO. Works natively with LangChain, LlamaIndex, CrewAI, Google ADK, AutoGen, OpenAI Agents, Semantic Kernel, Haystack, and Pydantic AI. Maintained by maximem-ai on GitHub, where it has earned 64 stars from the community.

Distributed KV Storage System based on Raft and RocksDB, can be use to store small files, like images. Maintained by wenweihu86 on GitHub, where it has earned 58 stars from the community.

Terraphim AI: deterministic AI Assistant. Maintained by terraphim on GitHub, where it has earned 54 stars from the community.

An NLP application just for the lols: built with Haystack to get an overview of what a user is posting about on Twitter. Maintained by TuanaCelik on GitHub, where it has earned 46 stars from the community.

Convert tracing data between Zipkin and Haystack formats. Maintained by ExpediaGroup on GitHub, where it has earned 46 stars from the community.

Context-Based-Question-Answering. Maintained by Karthik-Bhaskar on GitHub, where it has earned 42 stars from the community.

KKarthik-Bhaskar

View and debug the data in your Haystack search indexes, from within the Django admin. Maintained by kezabelle on GitHub, where it has earned 36 stars from the community.

Project-Haystack Java Reference Implementation. Maintained by skyfoundry on GitHub, where it has earned 35 stars from the community.

Fact checking baseline combining dense retrieval and textual entailment. Maintained by anakin87 on GitHub, where it has earned 31 stars from the community.

Use NVIDIA NIMs with Haystack pipelines. Maintained by deepset-ai on GitHub, where it has earned 31 stars from the community.

Template Haystack Search Application with Streamlit. Maintained by deepset-ai on GitHub, where it has earned 28 stars from the community.

YouTube Video Summarization App built using open source LLM and Framework like Llama 2, Haystack, Whisper, and Streamlit. This app smoothly runs on CPU as Llama 2 model is in GGUF format loaded through Llama.cpp. Maintained by GURPREETKAURJETHRA on GitHub, where it has earned 26 stars from the community.

GGURPREETKAURJETHRA

Simplifying Implementation of Haystack. Maintained by engie-group on GitHub, where it has earned 25 stars from the community.

A distributed object file system inspired by the paper Beaver which was published by Facebook Inc. at 2010. Maintained by divinerapier on GitHub, where it has earned 20 stars from the community.

Measuring RAG solutions throughput and latency. Maintained by SciPhi-AI on GitHub, where it has earned 19 stars from the community.

Unstructured Data Connectors for Haystack 2.0. Maintained by TuanaCelik on GitHub, where it has earned 18 stars from the community.

Repository with docker-compose files to start Haystack components in sandbox. Maintained by ExpediaDotCom on GitHub, where it has earned 18 stars from the community.

Workshop: Build a multimodal AI agent with Haystack & GPT-4o — featuring image understanding, document retrieval, conversational memory, and human-in-the-loop safety controls. Maintained by bilgeyucel on GitHub, where it has earned 17 stars from the community.

WhisperMesh is an advanced chatbot that integrates voice and text interactions, delivering personalized responses through LLM models and a sophisticated vector database. Leveraging the RAG framework from Haystack, it ensures engaging, data-driven conversations that adapt to your preferred style. Maintained by Mouez-Yazidi on GitHub, where it has earned 17 stars from the community.

Using Llama2 with Haystack, the NLP/LLM framework. Maintained by anakin87 on GitHub, where it has earned 16 stars from the community.

Haystack.net client. Maintained by SPIE-Worksphere on GitHub, where it has earned 16 stars from the community.

SSPIE-Worksphere

A GitHub bot that summarizes your actions throughout a day and lists all your achievements. Built with Haystack and OpenAI. Maintained by ArzelaAscoIi on GitHub, where it has earned 16 stars from the community.

This repo is a showcase of how you can use models deployed on AWS SageMaker in your Haystack Retrieval Augmented Generative AI pipelines. Maintained by deepset-ai on GitHub, where it has earned 14 stars from the community.

Use `outlines` generators with Haystack. Maintained by EdAbati on GitHub, where it has earned 14 stars from the community.

Build a RAG preprocessing pipeline. Maintained by Clearedge-AI on GitHub, where it has earned 12 stars from the community.

Simple Question Answering system, based on data crawled from Twin Peaks Wiki. It is built using Haystack, an awesome open-source framework for building search systems that work intelligently over large document collections. Maintained by anakin87 on GitHub, where it has earned 11 stars from the community.

Enables LLM integration with OpenAPI-defined services through function-calling JSON. Maintained by vblagoje on GitHub, where it has earned 11 stars from the community.

What is Haystack?

Haystack is an open-source framework for building production search and RAG pipelines. This gallery lists 52 open-source projects built with Haystack, most of them in AI & ML, DevTools and APIs, ranked by GitHub stars so the most-adopted repositories come first.

How projects are selected

Projects are public GitHub repositories found with the GitHub search query “topic:haystack” and at least 10 stars. Each repository is checked against Haystack’s languages and ecosystem before it is categorized, and stars, forks and last-commit dates come straight from the GitHub API, refreshed daily (current snapshot: October 6, 2026). Nothing here is paid placement.

Haystack projects: FAQ

How many open-source Haystack projects are listed?: 52 open-source projects built with Haystack are listed, sourced from public GitHub repositories as of October 6, 2026.
What is the most-starred Haystack project on GitHub?: mlflow leads with 27,368 GitHub stars (27.4k), followed by DjangoBlog with 7,417.
What kinds of projects are built with Haystack?: The largest category is AI & ML, with 29 projects (56% of the gallery), followed by DevTools with 13. Projects span 8 categories in total.
Which license do most Haystack projects use?: Apache-2.0 is the most common license, used by 20 of 52 projects (38%); MIT is next with 13. 11 projects declare no recognized license.

From the blog

Latest Haystack guides & deep-dives

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HaystackGuideMigrating Haystack to vLLM: decision & execution guide

Step-by-step migration guidance to adopt vLLM as the inference/serving backend for Haystack orchestration. Includes suitability, inventory, phased plan, tests, data/API considerations, and rollback gates.

AAndrea Lunelio · Jul 15, 2026 · 15 min

Video archive

Haystack talks, tutorials & deep-dives

How to Index Q&A Data With Haystack and Elasticsearch

How to Index Q&A Data With Haystack and Elasticsearch

JJames Briggs · 11K views · Apr 12, 2021