KOReader
KOReader is an open-source document reader optimized for e-ink devices, with support for Kindle, Kobo, PocketBook, reMarkable, Android and Linux plus PDF reflow and many formats.
Office & Productivity
Document, note-taking, PDF and everyday productivity software.
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Foliate
Foliate 3.3.0 is an open-source GNOME-oriented Linux ebook reader for EPUB, MOBI, FB2, CBZ and PDF. It adds annotations, dictionaries, translation, text-to-speech and flexible reading layouts.
Librera Reader
Librera Reader 9.4.21-fdroid is an open-source Android reader for PDF, EPUB, MOBI, DjVu, FB2, comic archives and other formats, with library scanning, annotations, text-to-speech and layout controls.
Markor
Markor 2.16.1 is an open-source Android editor for plain text, Markdown, todo.txt and local notes, with preview, sharing and quick actions built around ordinary files.
OpenCat
OpenCat is a native multi-model AI client for iPhone, iPad and Mac with bring-your-own keys, OpenCat Cloud, local models, MCP and system translation.
Msty Studio
Msty Studio 2.9.6 is a desktop AI workspace for local and online models, conversations, prompts, knowledge bases and multiple inference engines, with session data stored locally by default.
MindMac
MindMac is a native macOS multi-model AI client that connects to OpenAI, Claude, Gemini, OpenRouter, compatible endpoints and local model services.
Whispering
Whispering is a voice-input and transcription tool that records from a shortcut and copies or pastes text; the project has moved into the Epicenter desktop host.