head to head · open source
koodo-reader vs WritingTools
koodo-reader has 28,699 GitHub stars, 2,148 forks, 271 open issues and last shipped 2 days ago. WritingTools has 2,479 stars, 165 forks, 79 open issues and last shipped 3 months ago. koodo-reader leads on adoption by 1,058% (28,699 vs 2,479 stars). koodo-reader is written in JavaScript under AGPL-3.0; WritingTools is written in Swift under GPL-3.0. koodo-reader has attracted 7% as many forks as stars, WritingTools 7%. koodo-reader was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| koodo-reader | WritingTools | |
|---|---|---|
| GitHub stars | ★ 29K | ★ 2.5K |
| License | AGPL-3.0 | GPL-3.0 |
| Written in | JavaScript | Swift |
| Last push | 2026-11-01 | 2026-08-19 |
| Forks | ⑂ 2.1K | ⑂ 165 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick koodo-reader if
- You weight community size — 29K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick WritingTools if
- You want the WritingTools feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches Swift
- You evaluated both and WritingTools fits your workflow better
About koodo-reader
简体中文 हिंदी Português Indonesian English Türkçe Koodo Reader A cross platform ebook reader Download Preview Roadmap Document Plugins Preview Features Format support: EPUB ( .epub ) PDF ( .pdf ) DRM free Mobipocket ( .mobi ) and Kindle ( .azw3 , .azw ) Plain text ( .txt ) FictionBook ( .fb2 ) Comic book archive ( .cbr , .cbz , .cbt , .cb7 ) Rich text ( .md , .docx ) HyperText ( .html , .xml , .xhtml , .mhtml , .htm ) Platform support: Windows , macOS , Linux , Android , iOS and Web Sync and backup your data with OneDrive , Google Drive , Dropbox , iCloud , MEGA , pCloud , Yandex Disk , Box , FTP , SFTP , WebDAV…
read the full koodo-reader overview →
About WritingTools
Writing Tools 🍎 Using a Mac? Jump to the macOS (Native Swift Port) section → macOS Instantly proofread and optimize your writing system wide with AI: Summarize content (webpages, YouTube videos, documents...) in a click: Add your own buttons for unlimited potential! ✨ What is Writing Tools? Writing Tools is an Apple Intelligence inspired application for Windows, Linux, and macOS that supercharges your writing with an AI LLM (cloud based or local). With one hotkey press system wide, it lets you fix grammar, optimize text according to your instructions, summarize content (webpages, YouTube videos, etc.), and…
read the full WritingTools overview →
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Frequently asked questions
Is koodo-reader or WritingTools more popular?
koodo-reader has 28,699 GitHub stars and WritingTools has 2,479. koodo-reader has the larger community by that measure.
Are koodo-reader and WritingTools free?
Both are open source. koodo-reader is licensed under AGPL-3.0 and WritingTools under GPL-3.0. Neither carries a licence fee.
What is the difference between koodo-reader and WritingTools?
koodo-reader is written in JavaScript and WritingTools in Swift. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, koodo-reader or WritingTools?
Choose koodo-reader if you want the larger community (28,699 stars) or its AGPL-3.0 licence terms. Choose WritingTools if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.