updated 2026-07-15 01:30 UTC

Memory & Knowledge

33 agents tracked · Open-source-first, with limited public GitHub comparators · Ranked by trust score · Updated 2026-07-15 01:30 UTC

HVTracker independently evaluates 33 memory & knowledge using daily signals from GitHub, package registries, and security databases. The category is open-source-first, with a limited set of public GitHub-hosted proprietary or source-available comparators when they are important ecosystem reference points. Each agent is scored on activity, adoption, transparency, safety, and identity. The top-ranked memory & knowledge is LanceDB with a trust score of 86.8/100 (Grade A). Other leading projects include Mem0 and Vespa.

33
Agents
63
Avg Trust
926.2k
Total Stars
6
Grade A
1
Warnings
# Agent Trust Stars Language
1 LanceDB A Listed Developer-friendly OSS embedded retrieval library for multimodal AI. Search More; Manage Less. 86.8 10.9k HTML
2 Mem0 A Listed Universal memory layer for AI Agents 86.1 60.8k TypeScript
3 Vespa A Listed The AI search platform 85.6 7.0k Java
4 LightRAG A Listed [EMNLP2025] "LightRAG: Simple and Fast Retrieval-Augmented Generation" 82.8 37.7k Python
5 Graphiti A Listed Build Real-Time Knowledge Graphs for AI Agents 82.7 28.7k Python
6 Hindsight A Listed Hindsight: Agent Memory That Learns 82.5 18.4k Python
7 Chroma B Listed Search infrastructure for AI 76.4 28.8k Rust
8 FAISS B Listed A library for efficient similarity search and clustering of dense vectors. 74.8 40.5k C++
9 GraphRAG B Listed A modular graph-based Retrieval-Augmented Generation (RAG) system 71.8 34.4k Python
10 Milvus B Listed Milvus is a high-performance, cloud-native vector database built for scalable vector ANN search 71.7 45.2k Go
11 Tidb B Listed TiDB is built for agentic workloads that grow unpredictably, with ACID guarantees and native support for transactions, a 70.8 40.3k Go
12 Khoj B Listed Your AI second brain. Self-hostable. Get answers from the web or your docs. Build custom agents, schedule automations, d 69.8 35.7k Python
13 Weaviate B Listed Weaviate is an open-source vector database that stores both objects and vectors, allowing for the combination of vector 67.9 16.6k Go
14 Cognee B Listed Cognee is the open-source AI memory platform for agents. Give your AI agents persistent long-term memory across sessions 66.9 27.9k Python
15 RAGFlow B Listed RAGFlow is a leading open-source Retrieval-Augmented Generation (RAG) engine that fuses cutting-edge RAG with Agent capa 66.1 85.0k Go
16 Vellum Assistant B Listed An AI Assistant that’s easy to setup, does your work 24/7, knows your preferences and gets better over time. 65.9 881 TypeScript
17 txtai C Listed 💡 All-in-one AI framework for semantic search, LLM orchestration and language model workflows 64.7 12.7k Python
18 Zvec C Listed A lightweight, lightning-fast, in-process vector database 64.0 14.9k C++
19 Beads C Listed Beads - A memory upgrade for your coding agent 62.0 25.3k Go
20 MemOS C Listed Self-evolving memory OS for LLM & AI Agents: ultra-persistent memory, hybrid-retrieval, and cross-task skill reuse, with 61.5 10.2k TypeScript
21 agentmemory C Listed #1 Persistent memory for AI coding agents based on real-world benchmarks 60.2 25.1k TypeScript
22 PrivateGPT C Listed Interact with your documents using the power of GPT, 100% privately, no data leaks 57.1 57.3k Python
23 WeKnora C Listed Open-source LLM knowledge platform: turn raw documents into a queryable RAG, an autonomous reasoning agent, and a self-m 56.7 18.3k Go
24 pgvector C Listed Open-source vector similarity search for Postgres 56.4 22.2k C
25 Qdrant C Listed Qdrant - High-performance, massive-scale Vector Database and Vector Search Engine for the next generation of AI. Also av 55.5 33.3k Rust
26 Letta C Listed Platform for stateful agents: AI with advanced memory that can learn and self-improve over time. 55.0 23.8k Python
27 ByteRover CLI C Listed ByteRover CLI (brv) - The portable memory layer for autonomous coding agents (formerly Cipher) 52.7 4.9k TypeScript
28 LLM Wiki Agent C Listed A personal knowledge base that builds and maintains itself. Drop in sources — Claude (or Codex/Gemini) reads them, extra 50.3 3.2k Python
29 OpenViking D Listed Self-evolving Context Database for AI Agents. Unify Agent Memory, Knowledge RAG and Skills. 47.1 26.7k Python
30 AnythingLLM D Listed Stop renting your intelligence. Own it with AnythingLLM. Everything you need for a powerful local-first agent experience 43.1 63.3k JavaScript
31 Quivr D Needs review Opiniated RAG for integrating GenAI in your apps 🧠 Focus on your product rather than the RAG. Easy integration in exis 29.4 39.2k Python
32 EverOS D Listed One portable memory layer for every AI agent: local-first, Markdown-native, user-owned, and self-evolving across apps, t 22.6 11.0k Python
33 Memvid D Listed Memory layer for AI Agents. Replace complex RAG pipelines with a serverless, single-file memory layer. Give your agents 20.8 15.8k Rust