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Yes, both CrateDB and ScaleGrid offer a Free Trial.
CrateDB is designed for Large Enterprises, Medium Business and Small Business.
ScaleGrid is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
The starting price of CrateDB begins at $51/Month, while pricing details for ScaleGrid are unavailable.
Some top alternatives to CrateDB includes ScaleGrid, MySQL, restdb.io, DbGate, Aiven for PostgreSQL, Cube.js, CockroachDB, bit.io and Cube Cloud.
Some top alternatives to ScaleGrid includes MongoDB, Oracle Database, Worksheet Systems, DbGate, DigitalOcean MySQL, Lotame, Microsoft Access, DigitalOcean Droplets and Atlan Discovery.