| Cloudant Sync |
IBM (Cloudant was acquired in 2014) |
DBaaS (Cloud DB and Cloud Sync) |
Two-way cloud data replication (called “sync”) |
IoT & Mobile |
Cloud database based on Couch DB |
NoSQL; distributed JSON document database |
Cloud-based replication to and from on-device data (CouchDB <> cloud service) |
hosted service |
C#, Java, JavaScript, Objective-C, PHP, Ruby |
Proprietary (CouchDB is Apache 2.0 and they integrate with several open source libraries) |
| Couchbase server & Sync Gateway |
Couchbase (a merger of Couch One and Membase) |
Cloud DB and Cloud Sync |
Sync needs a Couchbase Server |
IoT & Mobile |
Edge: Couchbase Lite; Server: Couchbase |
NoSQL; document database |
Always needs Couchbase Server (originally Membase) |
mainly used as hosted service; iOS, Android, .NET (Desktop/Server), .NET UWP, Xamarin |
Swift, Objective-C, Java (Android), Java (Non-Android), Kotlin, C#, JavaScript, C |
Apache 2.0, delayed open source |
| Firebase |
Google (Firebase was acquired by Google in 2014) |
BaaS (Cloud) |
Cloud Sync via Google servers |
Mobile |
Cloud: Firebase Realtime Database; Edge: Caching only (Firestore) |
Document store |
hosted only |
APIS for iOS & Android JavaScript API RESTful HTTP API |
Java, JavaScript, Objective-C |
proprietory |
| Mongo Realm Sync |
MongoDB (Realm was acquired in 2019) |
Cloud DB and Cloud Sync |
Sync (in Alpha); only via Mongo Cloud |
IoT & Mobile |
Cloud: MongoDB, Edge: Mongo Realm |
MongoDB: NoSQL document store; RealmDB: Embedded NoSQL DB |
hosted service |
MongoDB: Linux, OS X, Solaris, Windows Mongo Realm DB: Android, iOS |
20+ languages, e.g. Java, C, C#, C++ |
Mongo DB changed its license from open source (GNU) to MongoDB Inc.’s Server Side Public License (SSPL) in 2018. |
| ObjectBox Sync |
ObjectBox |
DB and Sync |
Offline Sync, on-premise Sync, Cloud Sync, p2p Sync is planned |
IoT & Mobile |
ObjectBox |
Object-oriented embedded NoSQL DB |
Self-hosted / on-premise; hosted service upon request only |
iOS, Android, Linux, Windows, MacOS, any POSIX-system |
C, C++, Java, Kotlin, Swift, Go, Flutter / Dart, Python |
DB: Open source bindings, Apache 2.0, proprietary core |
| Parse |
Originally Parse, acquired by Facebook, closed down and open sourced, unmaintained |
MBaaS (Cloud) |
Cloud Sync, self-hosted or via a provider that offers Parse hosting |
Mobile |
Both, PostgreSQL* and MongoDB, can be used as a database for Parse |
MongoDB: NoSQL document store; PostgreSQL: Only Cloud |
only self-hosted or via a provider that offers Parse hosting |
Server: REST API lets you interact with Parse Server from anything that can send an HTTP request |
Java, JavaScript, PHP, C, etc |
open source, BSD |
| Syncstudio |
HandApps |
Cloud-based sync between SQLite and MS SQL Server based in the MS Sync Framework |
Sync |
Mobile |
Edge: SQLite or MSSQL (including LocalDB or Express); Server: Microsoft SQL |
relational / SQL |
SQL Server; Sync / replication works via cloud only |
Android Java, Basic4Android, Windows Forms, UWP, Windows Mobile, Xamarin |
|
proprietory, 4 licenses available: Community/Free, Subscription, Perpetual and Royalty Free |
| Zumero |
Zumero LLC |
Cloud-based replication of SQL data for Mobile |
Sync |
Mobile |
Edge: SQLite; Server: Microsoft SQL |
relational/ SQL |
SQL Server; Sync / replication works via cloud only |
Mobile only (iOS, Android, Xamarin, PhoneGap) |
|
proprietory, annual license scaling with the number of devices |