updated 2026-08-29 06:32 UTC

Memory & Knowledge

44 agents tracked · Open-source-first, with limited public GitHub comparators · Ranked by trust score · Updated 2026-08-29 06:32 UTC

HVTracker independently evaluates 44 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 ReMe with a trust score of 88.3/100 (Grade A). Other leading projects include Vespa and LanceDB.

44
Agents
62
Avg Trust
1.0M
Total Stars
7
Grade A
1
Warnings
# Agent Trust Stars Language
1 ReMe A Listed ReMe: Memory Management Kit for Agents - Remember Me, Refine Me. 88.3 3.4k Python
2 Vespa A Listed The AI search platform 87.9 7.1k Java
3 LanceDB A Listed Developer-friendly OSS embedded retrieval library for multimodal AI. Search More; Manage Less. 86.6 11.3k Rust
4 Mem0 A Listed Universal memory layer for AI Agents 86.2 64.3k Python
5 Graphiti A Listed Build Real-Time Knowledge Graphs for AI Agents 85.4 30.4k Python
6 LightRAG A Listed [EMNLP2025] "LightRAG: Simple and Fast Retrieval-Augmented Generation" 84.0 39.3k Python
7 Hindsight A Listed Hindsight: Agent Memory That Learns 83.4 21.6k Python
8 Weaviate B Listed Weaviate is an open-source vector database that stores both objects and vectors, allowing for the combination of vector 74.7 16.8k Go
9 FAISS B Listed A library for efficient similarity search and clustering of dense vectors. 74.2 40.8k C++
10 Chroma B Listed Search infrastructure for AI 73.8 29.2k Rust
11 GraphRAG B Listed A modular graph-based Retrieval-Augmented Generation (RAG) system 73.6 35.7k Python
12 Milvus B Listed Milvus is a high-performance, cloud-native vector database built for scalable vector ANN search 73.1 45.9k Go
13 RAGFlow B Listed RAGFlow is a leading open-source Retrieval-Augmented Generation (RAG) engine that fuses cutting-edge RAG with Agent capa 72.1 89.6k Go
14 Tidb B Listed TiDB is built for agentic workloads that grow unpredictably, with ACID guarantees and native support for transactions, a 71.5 40.5k Go
15 Qdrant B Listed Qdrant - High-performance, massive-scale Vector Database and Vector Search Engine for the next generation of AI. Also av 71.3 34.2k Rust
16 Cognee B Listed Cognee is the open-source AI memory platform for agents. Give your AI agents persistent long-term memory across sessions 69.1 30.3k Python
17 Code-Graph-RAG B Listed The ultimate RAG for your monorepo. Query, understand, and edit multi-language codebases with the power of AI and knowle 68.6 4.8k Python
18 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. 68.6 1.2k TypeScript
19 txtai B Listed 💡 All-in-one AI framework for semantic search, LLM orchestration and language model workflows 68.2 12.9k Python
20 Khoj B Listed Your AI second brain. Self-hostable. Get answers from the web or your docs. Build custom agents, schedule automations, d 67.4 36.8k Python
21 agentmemory B Listed #1 Persistent memory for AI coding agents based on real-world benchmarks 67.1 27.7k TypeScript
22 Zvec C Listed A lightweight, lightning-fast, in-process vector database 64.3 15.5k C++
23 MemOS C Listed Self-evolving memory OS for LLM & AI Agents: ultra-persistent memory, hybrid-retrieval, and cross-task skill reuse, with 62.3 11.1k TypeScript
24 Beads C Listed Beads - A memory upgrade for your coding agent 61.6 26.7k Go
25 Letta C Listed Platform for stateful agents: AI with advanced memory that can learn and self-improve over time. 61.5 24.5k Python
26 WeKnora C Listed Open-source LLM knowledge platform: turn raw documents into a queryable RAG, an autonomous reasoning agent, and a self-m 61.3 20.9k Go
27 memU C Listed Personal memory across agents 61.0 14.4k Python
28 PrivateGPT C Listed Complete API layer for private AI applications on local models: RAG, skills, tools, MCP, text-to-sql, and more. Works wi 59.5 57.5k Python
29 pgvector C Listed Open-source vector similarity search for Postgres 57.9 22.8k C
30 Titen C Listed Agent memory that needs no API key, no LLM, and no embedding provider. One command on Bun and it is serving MCP over std 57.9 11 TypeScript
31 OpenViking C Listed Self-evolving Context Database for AI Agents. Unify Agent Memory, Knowledge RAG and Skills. 56.6 34.2k Python
32 LLM Wiki Agent D Listed A personal knowledge base that builds and maintains itself. Drop in sources — Claude (or Codex/Gemini) reads them, extra 49.7 3.5k Python
33 LightMem D Listed [ICLR 2026] LightMem: Lightweight and Efficient Memory-Augmented Generation 49.3 1.1k Python
34 ByteRover CLI D Listed ByteRover CLI (brv) - The portable memory layer for autonomous coding agents (formerly Cipher) 46.0 5.0k TypeScript
35 Memvid D Listed Memory layer for AI Agents. Replace complex RAG pipelines with a serverless, single-file memory layer. Give your agents 45.8 16.5k Rust
36 EverOS D Listed One portable memory layer for every AI agent: local-first, Markdown-native, user-owned, and self-evolving across apps, t 45.7 12.5k Python
37 LycheeMemory D Listed Lightweight Long-Term Memory for LLM Agents. 43.8 1.2k Python
38 AnythingLLM D Listed Stop renting your intelligence. Own it with AnythingLLM. Everything you need for a powerful local-first agent experience 43.6 65.4k JavaScript
39 CodeGraphContext D Listed An MCP server plus a CLI tool that indexes local code into a graph database to provide context to AI assistants. 43.2 4.1k Python
40 Honcho D Listed Memory library for building stateful agents 40.4 6.9k Python
41 IWE D Listed Markdown knowledge graph — LSP for your editor, CLI + MCP memory for your AI agents 39.2 1.6k Rust
42 Pond D Listed Lossless storage and search for AI agent sessions, across every agentic client. 38.5 53 Rust
43 Quivr D Needs review Opiniated RAG for integrating GenAI in your apps 🧠 Focus on your product rather than the RAG. Easy integration in exis 30.8 39.4k Python
44 inno-agent D Listed An open-source personal learning agent with three-layer memory (learner profile / wiki knowledge base / cross-conversati 23.8 980 TypeScript

Grade = trust band: A ≥ 80, B ≥ 65, C ≥ 50, D < 50 — methodology