Odyssey vs PostgREST: What are the differences?
What is Odyssey? Scalable PostgreSQL connection pooler. Advanced multi-threaded PostgreSQL connection pooler and request router.
What is PostgREST? Automatic REST API for Any Postgres Database. PostgREST serves a fully RESTful API from any existing PostgreSQL database. It provides a cleaner, more standards-compliant, faster API than you are likely to write from scratch.
Odyssey and PostgREST can be primarily classified as "Database" tools.
Odyssey and PostgREST are both open source tools. It seems that PostgREST with 12.5K GitHub stars and 585 forks on GitHub has more adoption than Odyssey with 1.16K GitHub stars and 33 GitHub forks.