CouchDB
Combine filters →1 provider offers managed CouchDB, listed alphabetically. It is Uberspace. All of them shared hosting. 160 records do not record this field, and cannot appear here either way. For 1 the question does not apply.
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UberspaceOne we likeUberspace is a small German hosting service sitting between shared hosting and a VPS, running since 2011, with a shell account and a documented stack.
Which of these providers is best?
Hard to say without knowing the project. A free tier matters for a side project and barely at all for a shop that loses money every minute it is down. Read a few records side by side; the guide says where to start.