# Best RAG, data and memory tools, ranked by real usage

the week of Oct 25–31, 2026. Canonical page: https://index.devtoolwatch.com/categories/rag-data-and-memory/

| Rank | Tool | Stars | Downloads/wk |
|---|---|---|---|
| #1 | [XERJ](https://index.devtoolwatch.com/tools/xerj-org-xerj/) | 17.9k | – |
| #2 | [Memvid](https://index.devtoolwatch.com/tools/memvid-memvid/) | 17.3k | – |
| #3 | [LEANN](https://index.devtoolwatch.com/tools/startrail-org-leann/) | 13.7k | – |
| #4 | [Graphify](https://index.devtoolwatch.com/tools/graphify-labs-graphify/) | 140k | 480.7k |
| #5 | [MarkItDown](https://index.devtoolwatch.com/tools/markitdown/) | 193.2k | 4.7M |
| #6 | [Firecrawl](https://index.devtoolwatch.com/tools/firecrawl/) | 197.4k | 2.9M |
| #7 | [Mem0](https://index.devtoolwatch.com/tools/mem0/) | 68.2k | 884.1k |
| #8 | [Utopia](https://index.devtoolwatch.com/tools/deeplethe-utopia/) | 8.7k | – |
| #9 | [PageIndex](https://index.devtoolwatch.com/tools/vectifyai-pageindex/) | 39.9k | – |
| #10 | [Knowhere](https://index.devtoolwatch.com/tools/ontos-ai-knowhere/) | 3.9k | – |
| #11 | [MinerU](https://index.devtoolwatch.com/tools/mineru/) | 82.9k | 30.8k |
| #12 | [Docling](https://index.devtoolwatch.com/tools/docling/) | 69.9k | 904.2k |
| #13 | [Graphiti](https://index.devtoolwatch.com/tools/graphiti/) | 32.4k | 211k |
| #14 | [Crawl4AI](https://index.devtoolwatch.com/tools/crawl4ai/) | 86.7k | 358.1k |
| #15 | [MemPalace](https://index.devtoolwatch.com/tools/mempalace-mempalace/) | 60.2k | 15.1k |
| #16 | [RAGFlow](https://index.devtoolwatch.com/tools/ragflow/) | 93.3k | – |
| #17 | [pgvector](https://index.devtoolwatch.com/tools/pgvector/) | 23.5k | 9.4M |
| #18 | [turbopuffer](https://index.devtoolwatch.com/tools/turbopuffer/) | 183 | 3.4M |
| #19 | [Qdrant](https://index.devtoolwatch.com/tools/qdrant/) | 35.4k | 4.5M |
| #20 | [Orama](https://index.devtoolwatch.com/tools/oramasearch-orama/) | 10.6k | 2.3M |
| #21 | [Supermemory](https://index.devtoolwatch.com/tools/supermemory/) | 31.5k | 209.2k |
| #22 | [Milvus](https://index.devtoolwatch.com/tools/milvus/) | 46.5k | 1.1M |
| #23 | [LanceDB](https://index.devtoolwatch.com/tools/lancedb/) | 11.8k | 2.5M |
| #24 | [cognee](https://index.devtoolwatch.com/tools/cognee/) | 33k | 24.9k |
| #25 | [OpenViking](https://index.devtoolwatch.com/tools/volcengine-openviking/) | 41.2k | 66.8k |
| #26 | [LightRAG](https://index.devtoolwatch.com/tools/lightrag/) | 40.5k | 35.6k |
| #27 | [zvec-grep](https://index.devtoolwatch.com/tools/zvec-ai-zvec-grep/) | 4.2k | 3.2k |
| #28 | [Chroma](https://index.devtoolwatch.com/tools/chroma/) | 29.6k | 2.3M |
| #29 | [Pinecone SDK](https://index.devtoolwatch.com/tools/pinecone/) | 456 | 2.1M |
| #30 | [Zep](https://index.devtoolwatch.com/tools/zep/) | 5k | 259.5k |
| #31 | [Zvec](https://index.devtoolwatch.com/tools/alibaba-zvec/) | 16.2k | 6.9k |
| #32 | [DeepWiki-Open](https://index.devtoolwatch.com/tools/asyncfuncai-deepwiki-open/) | 18.3k | – |
| #33 | [RuVector](https://index.devtoolwatch.com/tools/ruvnet-ruvector/) | 4.7k | – |
| #34 | [Exa](https://index.devtoolwatch.com/tools/exa/) | 237 | 1.2M |
| #35 | [Marker](https://index.devtoolwatch.com/tools/marker/) | 40.7k | 20.6k |
| #36 | [Letta](https://index.devtoolwatch.com/tools/letta/) | 25.3k | 116k |
| #37 | [GraphRAG](https://index.devtoolwatch.com/tools/graphrag/) | 36.5k | 11.1k |
| #38 | [Unstructured](https://index.devtoolwatch.com/tools/unstructured/) | 15.7k | 581.8k |
| #39 | [Jina Reader](https://index.devtoolwatch.com/tools/jina-reader/) | 12.2k | – |

## FAQ

### What is the fastest-growing of the RAG, data and memory tools right now?

XERJ ranked #1 among RAG, data and memory tools on the Devtoolwatch Board in the week of Oct 25–31, 2026, with a momentum score of 97 out of 100.

### Which of the RAG, data and memory tools has the most GitHub stars?

Of the RAG, data and memory tools ranked in the week of Oct 25–31, 2026, Firecrawl has the most GitHub stars: 197.4k.

### Which of the RAG, data and memory tools is downloaded the most?

pgvector's main package had the most downloads of the ranked RAG, data and memory tools: 9.4M in the week of Oct 25–31, 2026.

### How does Devtoolwatch rank RAG, data and memory tools?

Every Monday the Board averages four percentile ranks: new GitHub stars from daily snapshots, new stars for the repo's size, added npm and PyPI downloads, and download growth beyond the market. Star spikes without forks, downloads or Hacker News to back them are held back.