Alternatives to Mentedb

Open-source context intelligence & persistent memory layer for LLM agents with ~12ms deterministic dedup.

Zero-LLM persistent memory for AI agents — deterministic, auditable, offline.

AI memory layer that gives agents persistent, cross-session context

In-memory graph database for real-time GraphRAG and AI memory

Portable encrypted cross-model memory for AI agents, with 95.1% LoCoMo score

A lightweight, hosted JSON database for AI agent memory that works across ChatGPT, Claude, and Codex.

Local-first memory and secrets for AI agents, portable across every harness

Production-grade memory, cost control, and audit for AI agents.

Graph + vector persistent memory for AI agents — push JSON, get a typed, searchable graph.

Open-source context retrieval layer grounding AI agents in real-time data from your apps and databases.

Distributed transactional document database with vector search for AI agents on FoundationDB.

Local-first vector database for AI agents, RAG, and edge workloads.

Fully managed vector database for fast, accurate AI retrieval at scale

Open-source vector database for billion-scale AI similarity search.

Open-source vector similarity search for Postgres — store embeddings with your relational data, no extra database.

Trace, debug, and deploy reliable AI agents with full observability

Open-source, serverless vector search built on object storage that claims up to 10x lower cost.

Open-source distributed SQL database with vector search, ACID transactions, and HTAP for AI agent workloads.

Open-source real-time SQL analytics, full-text search, and vector database for AI.

Serverless Postgres with branching, autoscaling, and a full backend for apps and agents.

Open-source local-first AI memory with verbatim recall via method of loci.

Serverless vector database with hybrid search for GenAI apps, auto-scaled to your workload

Free open-source admin UI for ChromaDB vector database

Open-source, cloud-native data warehouse in Rust unifying analytics, vector search, and full-text search on object storage.

AI-native medical record retrieval spanning EHRs, payers, and the long tail via one API.

Agent-native memory infrastructure that cuts LLM token costs by up to 97%.

Zvec: open-source, in-process vector database with sub-millisecond search at billion scale.

API-first document parsing that turns 20+ formats into structured JSON for AI agents and RAG pipelines.

Local-first knowledge graph assistant for AI agents.

Full Linux VMs in <50ms for AI agents — persistent, idle-free, pay-per-active-second.