Looking for an alternative to Limpet? 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 engineering memory for AI coding agents. Survives refactors, knows when it is stale.
Direct comparison of key metrics, runtimes, authentication methods, and community popularity.
| Server Name | Runtime | Auth | Pricing | GitHub Stars | Downloads | Action |
|---|---|---|---|---|---|---|
| — | Free/None | Free | 3 | — | Current | |
| npx | API key | Freemium | 2 | 25 | Compare → | |
| npx | No auth required | Free | 61 | 12 | Compare → | |
| npx | Free/None | Free | 8 | — | Compare → | |
| npx | Free/None | Free | 1 | — | Compare → | |
P Perenna | uvx | Free/None | Free | 40 | — | Compare → |
| npx | Free/None | Free | 4 | — | Compare → | |
| npx | API key | Free | 62,369 | — | Compare → | |
| uvx | Free/None | Free | 582 | — | Compare → | |
| npx | No auth required | Free | 43,832 | 1 | Compare → | |
| npx | Free/None | Free | 4 | — | Compare → | |
| npx | Free/None | Free | 8 | — | Compare → | |
| uvx | Free/None | Free | 29 | — | Compare → |