Looking for an alternative to MCP External Memory? Whether you need a different runtime environment, custom authentication support, or alternative API integrations in the Knowledge & Memory ecosystem, we have cataloged and compared the top alternative MCP servers below.
An MCP server that gives LLMs persistent, searchable semantic memory
Direct comparison of key metrics, runtimes, authentication methods, and community popularity.
| Server Name | Runtime | Auth | Pricing | GitHub Stars | Downloads | Action |
|---|---|---|---|---|---|---|
| uvx | Free/None | Free | — | — | Current | |
| npx | API key | Freemium | 2 | 25 | Compare → | |
| npx | No auth required | Free | 49 | 12 | Compare → | |
| npx | Free/None | Free | — | — | Compare → | |
| npx | Free/None | Free | — | — | Compare → | |
| Remote (SSE) | Free/None | Free | 12 | — | Compare → | |
E Engram | npx | Free/None | Free | 11 | — | Compare → |
| uvx | Free/None | Free | 4 | — | Compare → | |
| uvx | Free/None | Free | 350 | — | Compare → | |
M Montycat MCP — Shared AI Memory | uvx | Free/None | Free | 35 | — | Compare → |
| Remote (SSE) | Free/None | Free | 3 | — | Compare → | |
| npx | Free/None | Free | 7 | — | Compare → | |
| npx | Free/None | Free | 15 | — | Compare → |