I hope this is OK, but I just wanted to mention Couchbase Lite as another option, in case you weren't aware. It's got a comparable feature set to ObjectBox and Isar, including
Couchbase Lite for Dart
Data Synchronization Across iOS Devices Using Couchbase Mobile - The Couchbase Blog
Fluttercouch: Combining the power of Flutter and Couchbase
A Guide to Mobile Cross-Platform Development With Couchbase
Gabriel (@GTerwesten) / Twitter
Peer-to-Peer Database Sync with Couchbase Lite - The Couchbase Blog
Data Sync between Capella App Services and Self Managed Couchbase Mobile Deployments
Couchbase Mobile SDKs
Peer-to-Peer Database Sync with Couchbase Lite - The Couchbase Blog
Flutter & Couchbase lite example : r/couchbase
Got error `> Could not find com.couchbase.lite:couchbase-lite-android-ee:2.1.0.` on Android · Issue #17 · fluttercouch/fluttercouch · GitHub
Couchbase Mobile - Install Sync Gateway - The Couchbase Blog
Couchbase Lite For Data Storage In Ionic App Using Cordova Plugin
Flutter vs React Native: What to choose in 2022
Got error `> Could not find com.couchbase.lite:couchbase-lite-android-ee:2.1.0.` on Android · Issue #17 · fluttercouch/fluttercouch · GitHub
GitHub - SaltechSystems/couchbase_lite: Flutter plugin for the Community edition of Couchbase Lite. Couchbase Lite is an embedded lightweight, document-oriented (NoSQL), syncable database engine.
Couchbase Tutorial for Android: Getting Started | Kodeco
Couchbase Lite 2.0 – Connect New York 2018 - YouTube
Fluttercouch · GitHub
Couchbase Lite SDK for Flutter - Couchbase Lite - Couchbase Forums
Building a Mobile Application with Couchbase – Part 3
GitHub - cbl-dart/cbl-dart: Couchbase Lite for Dart and Flutter
