Yugabyte alternatives
The highest-scoring alternative to Yugabyte is Neon at 90/100 on the AgentReady, against 48/100 for Yugabyte.
All scored in Databases.
What Neon does that Yugabyte does not
Neon passes structured api reference, authentication documented, self-service signup, agent compatibility verified, and Yugabyte 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
Yugabyte fails structured api reference, openapi / spec quality, authentication documented, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented, self-service signup, no mandatory sales call, agent-compatible signup flow, programmatic credential creation, fast time to first request, copyable quickstart, official python sdk, structured, predictable output, machine-readable errors, retry behavior documented, 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 22 products scored in Databases, query a sql database is offered by 73%, serverless database is offered by 23%, branch a database is offered by 9%. 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 Yugabyte") over the MCP server, or GET /v1/categories/databases.