Fossify Calendar
Open-source Android calendar with no ads, repeat rules and Nextcloud sync
Fossify
12 apps on TopDown APK www.fossify.org
Fossify publishes 12 apps in this catalog, all listed for Android and all licensed under GPL-3.0-only. The set covers calendar, camera, clock, contacts, file management, gallery, messages and notes. Three apps carry the Beta label: Fossify Camera Beta, Fossify Clock Beta and Fossify Notes Beta.
The most recent updates are dated October 27, 2026, for Fossify Calendar, Fossify File Manager, Fossify Gallery and Fossify Messages. The other apps were last updated between February 1 and February 3, 2026. Details are on the developer website at fossify.org.
Apps by Fossify
Fossify Camera Beta
Open-source camera for Android 10+, 9.8 MB, no ads, GPL-3.0 code on GitHub
Fossify Clock Beta
Open-source alarm, timer and stopwatch app with no ads and offline use
Fossify Contacts
Open-source contacts app with vCard backup, no ads, and an 8.2 MB install
Fossify File Manager
Ad-free, GPL-3.0 file explorer with app locks, in only 9.6 MB
Fossify Gallery
Ad-free, GPL-3.0 gallery with EXIF stripping, locks and a recycle bin
Fossify Messages
Ad-free, open-source SMS and MMS app with keyword blocking and backup
Fossify Notes Beta
Free, ad-free open-source notes and checklists with a home screen widget
Fossify Phone
Free, ad-free phone app from Fossify with public GPL-3.0 source code
Fossify Keyboard Beta
Offline, ad-free open-source keyboard with emojis and a pinned clipboard
Fossify Music Player
Free open-source offline music player with sleep timer, widget and no ads.
Fossify Voice Recorder Beta
Free, ad-free open-source voice recorder for Android 8.0+, only 7 MB