Top 3 Objective-C Sync Projects

Realm

48 16,162 9.2 Objective-C

Realm is a mobile database: a replacement for Core Data & SQLite

Project mention: Energy, WiFi and RAM use by Android messaging apps | news.ycombinator.com | 2023-10-20

Presumably realm in Element for Android. https://realm.io/ "Realm by MongoDB"
See also https://github.com/vector-im/element-android/issues/1025

syncthing-macos

11 2,550 6.7 Objective-C

Official frugal and native macOS Syncthing application bundle

Project mention: How do I setup Syncthing on my TUC and my Macbook? Please I'm going insane. | /r/Syncthing | 2023-06-24

InfluxDB

www.influxdata.com featured

Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
Couchbase Mobile

0 1,616 8.1 Objective-C

Lightweight, embedded, syncable NoSQL database engine for iOS and MacOS apps.

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).