Porter alternatives
The highest-scoring alternative to Porter is Vercel at 93/100 on the AgentReady, against 55/100 for Porter.
All scored in Hosting & Deployment.
What Vercel does that Porter does not
Vercel passes clear product positioning, structured api reference, authentication documented, agent compatibility verified, and Porter fails them. That is the whole of the gap between the two scores, so if none of those matter to your agent the ranking above overstates the difference.
Why people look for an alternative
Porter fails clear product positioning, structured api reference, openapi / spec quality, authentication documented, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented, no mandatory sales call, agent-compatible signup flow, programmatic credential creation, structured, predictable output, machine-readable errors, idempotency support, rate-limit behavior predictable, agent compatibility verified. Each one is a place an unattended run stops, which is usually what sends someone looking in the first place.
What this category actually supports
Across the 24 products scored in Hosting & Deployment, deploy an app is offered by 63%, serve from the edge / cdn is offered by 17%, manage dns is offered by 13%. Anything under half is a gap you should expect to fill yourself whichever one you pick.
An agent can get this list directly: resolve("alternative to Porter") over the MCP server, or GET /v1/categories/hosting.