Isar Database
Extremely fast, easy to use, and fully async NoSQL database
... and all changes are rolled back if an error occurs. The unique query syntax is very powerful and statically typed. No need to worry about runtime errors. Made for Flutter. Easy to use, no config, no boilerplate. The sky is the limit. Composite & multi-entry indexes, query modifiers, JSON support etc. Asynchronous, parallel query operations & multi-isolate support by default. Open source. Everything is open source and free forever!