Looking for an alternative to Heirmos? 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.
Persistent memory shared across Claude, ChatGPT, Grok and other MCP clients.
Direct comparison of key metrics, runtimes, authentication methods, and community popularity.
| Server Name | Runtime | Auth | Pricing | GitHub Stars | Downloads | Action |
|---|---|---|---|---|---|---|
H Heirmos (Target) | Remote (SSE) | Free/None | Free | — | — | Current |
M MemoryRouter | Remote (SSE) | Free/None | Free | — | — | Compare → |
| npx | API key | Freemium | 2 | 25 | Compare → | |
| Remote (SSE) | Free/None | Free | — | — | Compare → | |
C Collective Memory | npx | Free/None | Free | — | — | Compare → |
T Taproot | Remote (SSE) | Free/None | Free | — | — | Compare → |
M Mcp | Remote (SSE) | Free/None | Free | — | — | Compare → |
M Memory | npx | Free/None | Free | — | — | Compare → |
M Mcp | Remote (SSE) | Free/None | Free | — | — | Compare → |
| npx | No auth required | Free | 38,510 | 1 | Compare → | |
T Throughline | Remote (SSE) | Free/None | Free | — | — | Compare → |
C Cortex | Remote (SSE) | Free/None | Free | — | — | Compare → |
M Memory | Remote (SSE) | Free/None | Free | — | — | Compare → |