OAK.memory alternatives

Tools that do what OAK.memory does, found by what they say they do rather than by shelf. Among the equally alike, the most used come first. Each line says how it differs from OAK.memory.

Read 2026-10-26

With a free plan or free to use: Mem0, UnClick, SurrealDB, Engram, Octopoda, PMB.

10 alternativesUnlike OAK.memory

#1
Mem0 Developer tools MCP · sign-in
Stores and retrieves persistent memories of users and sessions for AI agents and applications through an API and open-source SDK.
Free planMore widely used
16.8k
Active
From $19/mo
2023
#2
HelixDB Developer tools
Stores graph, vector, and temporal data in one database for AI agents and retrieval-augmented generation.
Can run on your servers
90
Active
From $5/mo
#3
UnClick Developer tools MCP · sign-in
Gives AI assistants memory that persists across sessions and an MCP connection that records receipts for work they claim to have finished.
Free plan
28
Active
#4
YantrikDB Developer tools
Persistent memory database for AI agents that stores and retrieves facts across sessions with conflict detection.
Can run on your servers
6.7k installs/mo
Active
#5
SurrealDB Data
Stores documents, graphs, relational tables and vectors in one database engine queried with SurrealQL, running embedded, self-hosted or in the cloud.
Free planCan run on your servers
3.5k
Active
From $0.02 per use
2015
#6
Engram Developer tools
Provides persistent memory and knowledge graphs for AI coding agents across sessions with semantic recall and automatic consolidation.
Free planAlso: Agents
29
Active
From $29/mo
#7
Octopoda Retrieval (RAG)
Provides persistent memory storage and retrieval for AI agents with loop detection and spend controls.
Free planAlso: Agents, Monitoring
5
Maintained
From $19/mo
#8
Mnemosyne Developer tools
Stores and recalls agent memories in a local SQLite file, using vector and full-text search for retrieval.
Same job
3
Active
#9
Nexus-Catalyst Developer tools MCP · sign-in
Stores decisions from AI coding and chat tools and recalls them in new sessions via MCP, using vector search plus a knowledge graph.
Also: Search
2
From $9/mo
#10
PMB Developer tools
Stores decisions and lessons in local SQLite, recalled by AI coding agents through MCP before they respond.
Free planAlso: Agents
63 linking domains
Open source

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How this list is made: the words OAK.memory is described with (what it does, for whom, what it is used for) are matched against every tool in the Atlas. A tool on the same shelf, or doing the same kind of work, counts for a little more. Nothing here is paid for.