Looking for an alternative to Signal Relay? Whether you need a different runtime environment, custom authentication support, or alternative API integrations in the Developer Tools ecosystem, we have cataloged and compared the top alternative MCP servers below.
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Direct comparison of key metrics, runtimes, authentication methods, and community popularity.
| Server Name | Runtime | Auth | Pricing | GitHub Stars | Downloads | Action |
|---|---|---|---|---|---|---|
S Signal Relay (Target) | npx | Free/None | Free | — | — | Current |
A Ai Netcafe | Remote (SSE) | Free/None | Free | 88,607 | — | Compare → |
| npx | API key | Bring your own API key (usage-based cost) | 27,973 | — | Compare → | |
M Mcp | npx | Free/None | Free | 20 | — | Compare → |
| Remote (SSE) | Free/None | Free | 43 | — | Compare → | |
B Bloomfilter | npx | Free/None | Free | 9 | — | Compare → |
W Windows MCP | uvx | Free/None | Free | 6,723 | — | Compare → |
H Hypertool Mcp | npx | Free/None | Free | 156 | — | Compare → |
P Penni Mcp | npx | Free/None | Free | — | — | Compare → |
| npx | API key | Free | 2,926 | — | Compare → | |
M Mcp Server | Remote (SSE) | Free/None | Free | — | — | Compare → |
| npx | Free/None | Free | 80,501 | — | Compare → | |
M Mcp Debugger | npx | Free/None | Free | 2 | — | Compare → |