Cobalt SDK Alternatives

Apps similar to Cobalt SDK include KOReader, which is free and open source. Other options are Kobo Books. Between them they cover Android, iPhone, Mac, Windows and Linux.

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Cobalt SDK alternatives page was last updated Aug 22, 2026

KOReader
90 likes
An ebook reader application supporting PDF, DjVu, EPUB, FB2 and many more formats, running on Kindle, Kobo, PocketBook, Linux and Android devices.
93 KOReader alternatives
Cost / License
Free
Open Source (AGPL-3.0)
Application typeApplication types
Ebook Reader
PDF Reader
Platforms
Linux
Android
Android Tablet
AppImageHub
Kobo Books
Linux Mobile
Flathub
F-Droid
Kindle Fire
OpenAPK
C
Good alternative?Is KOReader a good alternative to Cobalt SDK?
Kobo Books
18 likes
Kobo Books is an application with a large library of eBooks, audiobooks, graphic novels, and children's books, accessible on smartphones or tablets. The app includes a search system for finding books by author, title, topic, or genre.
39 Kobo Books alternatives
Cost / License
Freemium
Proprietary
Application typeApplication types
Ebook Reader
Ebook Library
Origin
Canada
Platforms
Mac
Windows
Online
Android
iPhone
Android Tablet
iPad
Canada
C
Good alternative?Is Kobo Books a good alternative to Cobalt SDK?

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