Offline Cook Book

Cooking app with simple minimalist recipes which does not require an internet coGPL-3.0-only

Offline Puzzle Solver

Solves various kinds of puzzle (Sudoku, N-Queens)GPL-3.0-or-later

Taipei Youbike Offline

Find bike stations in TaiwanGPL-3.0-only

Save For Offline

Save websites locallyGPL-2.0-or-later

Organic Maps: Hike, Bike, Drive Offline

Navigate with Privacy - Community-Driven & Open-SourceApache-2.0

Offline Calendar

Lets you add calendars to the Calendar app, which are not synchronized.GPL-3.0-only

QuickDic

Offline translation dictionaryApache-2.0

Sumatora

Offline Japanese dictionaryGPL-3.0-or-later

Aard 2

Offline dictionaryGPL-3.0-only

WikipOff

Download and read Wikipedia offlineGPL-3.0-only

Paper Wallet

Totally offline and secure bitcoin paper walletMIT

Senreta Vortaro

Simple, offline English-Esperanto dictionaryApache-2.0

BwareArea

An offline GPS based POI alerter with overlayMIT

OpenWort

Simple offline thesaurus for the German languageUnlicense

WTF‽ (The MirOS Project)

Offline acronym translatorMirOS

Forro Lyrics

Offline database of Forró lyricsGPL-3.0-only

Mitzuli

Offline TranslatorGPL-2.0-or-later

NextGIS Mobile

GIS that lets you create, edit and export geodata, both online and offlineGPL-3.0-or-later

MapEver

Offline navigation on photographed mapsGPL-3.0-or-later

Kiwix

Offline Wikipedia readerGPL-3.0-only