head to head · open source
koodo-reader vs vmprint
koodo-reader has 28,699 GitHub stars, 2,148 forks, 271 open issues and last shipped 2 days ago. vmprint has 679 stars, 30 forks, 1 open issues and last shipped 2 months ago. koodo-reader leads on adoption by 4,127% (28,699 vs 679 stars). koodo-reader is written in JavaScript under AGPL-3.0; vmprint is written in JavaScript under Apache-2.0. koodo-reader has attracted 7% as many forks as stars, vmprint 4%. 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 | vmprint | |
|---|---|---|
| GitHub stars | ★ 29K | ★ 679 |
| License | AGPL-3.0 | Apache-2.0 |
| Written in | JavaScript | JavaScript |
| Last push | 2026-11-01 | 2026-08-29 |
| Forks | ⑂ 2.1K | ⑂ 30 |
| 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 vmprint if
- You want the vmprint feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches JavaScript
- You evaluated both and vmprint 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 vmprint
VMPrint I built the layout engine so you don't have to. VMPrint is a layout engine. Not a PDF library. Not a renderer. A layout engine: the component that decides where every glyph goes, negotiates page breaks, resolves mutual spatial dependencies between dynamic regions, and produces a flat array of exact X/Y coordinates for every box and text run in the document. What you do with that output is your call: render to PDF, replay on a Canvas, drive a word processor's display layer, feed it to a WebGL pipeline. The engine's job ends when the math is done. The architecture is backed by a pending patent. The core…
read the full vmprint overview →
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Frequently asked questions
Is koodo-reader or vmprint more popular?
koodo-reader has 28,699 GitHub stars and vmprint has 679. koodo-reader has the larger community by that measure.
Are koodo-reader and vmprint free?
Both are open source. koodo-reader is licensed under AGPL-3.0 and vmprint under Apache-2.0. Neither carries a licence fee.
What is the difference between koodo-reader and vmprint?
koodo-reader is written in JavaScript and vmprint in JavaScript. 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 vmprint?
Choose koodo-reader if you want the larger community (28,699 stars) or its AGPL-3.0 licence terms. Choose vmprint if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.