AsteroidOS Sync

Synchronize with your AsteroidOS smartwatchGPL-3.0-or-later

Round Sync - Rclone for Android

A file manager for Android, using rclone for the heavy lifting.GPL-3.0-only

floccus bookmark sync

Sync your bookmarks privately across browsers and devicesMPL-2.0

EteSync - Secure Data Sync

Secure, private and end-to-end encrypted calendar, contacts and tasks syncGPL-3.0-only

Snapcast - multi-room audio in perfect sync

Snapcast client for AndroidGPL-3.0-or-later

Casio G-Shock Smart Sync

Add smart functions to your Casio square BT G-Shock Watch.MIT

Infomaniak kSync

Automatically sync your contacts and calendarsGPL-3.0-only

SyncMemories

Sync photos fastly using USB capabilityMIT

Flym DecSync

Sync RSS without a server using DecSyncGPL-3.0-only

MoneyBuster

Multi-project shared budget manager able to sync with self hosted FOSS servicesGPL-3.0-or-later

spaRSS DecSync

Sync RSS without a server using DecSyncGPL-3.0-only

Kolab Client

Sync contacts/calendarGPL-3.0-only

DecSync CC

Sync contacts, calendars and tasks without a server using DecSyncGPL-3.0-only

Tasks.org: Open-source To-Do Lists & Reminders

Private, ad-free task lists! Optional sync with Google Tasks, CalDAV or EteSync!GPL-3.0-only

Kolab Notes

Write notes and sync them with KolabLGPL-3.0-only

Stingle Photos

Stingle Photos is a secure, end-to-end encrypted gallery and sync appGPL-3.0-only

LaaNo

Bind notes to links and sync them with NextcloudGPL-3.0-or-later

kardi notes | privacy matters

Cross-platform app to take notes. Encrypted, open-source, sync across devices.GPL-3.0-only

Another notes app

Another notes app, like there have been tens of thousands before.Apache-2.0

Quillpad

Markdown notes, task lists, Nextcloud sync and more. A fork of the Quillnote appGPL-3.0-only