Best overall Fauna alternative per G2. Gain: established market leader, document model, flexible schemas, multi-cloud. Trade-off: different query language, no native relational features like Fauna had.

Good for teams wanting PostgreSQL with JSON support. Gain: SQL + document flexibility, auth/storage included, active development. Trade-off: relational-first vs Fauna's document-first approach.

Serverless document database from AWS. Gain: truly serverless scaling, global tables, AWS integration. Trade-off: AWS lock-in, different data model, no relational features.

For teams wanting serverless relational. Gain: MySQL/PostgreSQL support, branching workflows. Trade-off: no free tier since 2024, relational model vs document.

Open-source MongoDB-compatible database. Gain: no vendor lock-in, MongoDB wire protocol, self-hostable. Trade-off: newer project, less mature ecosystem.