Memory & Knowledge

27 open-source agents tracked · Ranked by trust score · Updated 2026-06-04 18:04 UTC

HVTracker independently evaluates 27 open-source memory & knowledge using daily signals from GitHub, package registries, and security databases. Each agent is scored on activity, adoption, transparency, safety, and identity. The top-ranked memory & knowledge is Open WebUI with a trust score of 88.6/100 (Grade A). Other leading projects include LanceDB and Mem0.

27
Agents
68
Avg Trust
966.1k
Total Stars
5
Grade A
# Agent Trust Stars Language
1 Open WebUI A Listed User-friendly AI Interface (Supports Ollama, OpenAI API, ...) 88.6 140.0k Python
2 LanceDB A Listed Developer-friendly OSS embedded retrieval library for multimodal AI. Search More; Manage Less. 88.2 10.5k HTML
3 Mem0 A Listed Universal memory layer for AI Agents 88.0 57.7k Python
4 Vespa A Listed The AI search platform 87.6 6.9k Java
5 LightRAG A Listed [EMNLP2025] "LightRAG: Simple and Fast Retrieval-Augmented Generation" 83.9 36.2k Python
6 Graphiti B Listed Build Real-Time Knowledge Graphs for AI Agents 79.6 27.0k Python
7 RAGFlow B Listed RAGFlow is a leading open-source Retrieval-Augmented Generation (RAG) engine that fuses cutting-edge RAG with Agent capa 76.1 81.9k Python
8 Weaviate B Listed Weaviate is an open-source vector database that stores both objects and vectors, allowing for the combination of vector 75.3 16.3k Go
9 Qdrant B Listed Qdrant - High-performance, massive-scale Vector Database and Vector Search Engine for the next generation of AI. Also av 74.6 31.8k Rust
10 LibreChat B Listed Enhanced ChatGPT Clone: Features Agents, MCP, DeepSeek, Anthropic, AWS, OpenAI, Responses API, Azure, Groq, o1, GPT-5, M 73.9 38.1k TypeScript
11 Chroma B Listed Search infrastructure for AI 72.9 28.2k Rust
12 Milvus B Listed Milvus is a high-performance, cloud-native vector database built for scalable vector ANN search 72.8 44.6k Go
13 Headroom B Listed Compress tool outputs, logs, files, and RAG chunks before they reach the LLM. 60-95% fewer tokens, same answers. Library 72.1 11.4k Python
14 FAISS B Listed A library for efficient similarity search and clustering of dense vectors. 71.3 40.2k C++
15 Tidb B Listed TiDB is built for agentic workloads that grow unpredictably, with ACID guarantees and native support for transactions, a 69.1 40.1k Go
16 Cognee B Listed Memory platform for AI Agents in 6 lines of code 68.0 17.7k Python
17 Khoj B Listed Your AI second brain. Self-hostable. Get answers from the web or your docs. Build custom agents, schedule automations, d 65.7 34.8k Python
18 Odysseus C Listed Self-hosted AI workspace. 64.1 46.2k JavaScript
19 Neo C Listed Neo.mjs is a self-evolving software organism: a professional end-to-end AI engineering team whose cross-model swarm inha 63.6 3.2k JavaScript
20 txtai C Listed 💡 All-in-one AI framework for semantic search, LLM orchestration and language model workflows 61.9 12.6k Python
21 PrivateGPT C Listed Interact with your documents using the power of GPT, 100% privately, no data leaks 59.8 57.2k Python
22 Letta C Listed Letta is the platform for building stateful agents: AI with advanced memory that can learn and self-improve over time. 55.9 23.1k Python
23 pgvector C Listed Open-source vector similarity search for Postgres 52.5 21.6k C
24 AnythingLLM D Listed Stop renting your intelligence. Own it with AnythingLLM. Everything you need for a powerful local-first agent experience 47.6 61.0k JavaScript
25 Quivr D Listed Opiniated RAG for integrating GenAI in your apps 🧠 Focus on your product rather than the RAG. Easy integration in exis 43.8 39.2k Python
26 Leon D Listed 🧠 Leon is your open-source personal assistant. 41.9 17.3k TypeScript
27 agentmemory D Listed #1 Persistent memory for AI coding agents based on real-world benchmarks 39.9 21.2k TypeScript