Reader alternatives

12 Windows apps in the same category as Reader, ranked by what they have in common and by popularity.

• 
  calibre

  calibre is the one stop solution to all your e-book needs.

  Open source 9.17.0 1.5M ↓ ★ 26.2K ebook, epub, reader
• 
  SumatraPDF

  SumatraPDF is a multi-format (PDF, EPUB, MOBI, CBZ, CBR, FB2, CHM, XPS, DjVu) reader for Windows.

  Open source 3.6.1 3M ↓ ★ 17.8K ebook, epub, reader
• 
  Sigil

  Sigil is a free, open source, multi-platform ebook editor that uses Qt (and QtWebEngine). It is designed to edit books in ePub format (both ePub 2 and ePub 3).

  Open source 2.8.1 34.5K ↓ ★ 7K ebook, epub
• 
  BlueGriffon

  The next-gen Web and EPUB Editor based on the rendering engine of Firefox®

  Open source 3.1 34K ↓ ★ 359 ebook, epub
• 
  Kindle Comic Converter

  Kindle Comic Converter is a Python app to convert comic/manga files or folders to EPUB, Panel View MOBI or E-Ink optimized CBZ.

  Open source 12.0.0 6K ↓ ★ 5.9K ebook, epub
• A
  ausweisapp2

  Authenticate to websites with german ID.

  Open source 2.6.1 88K ↓ ★ 780 reader
• 
  YACReader

  Read, browse and manage your comics collection.

  Open source 10.4.0 9.3K ↓ ★ 1.4K read, reader
• 
  Fluent Reader

  Modern desktop RSS reader built with Electron, React, and Fluent UI.

  Open source 1.2.2 610 ↓ ★ 9.7K read, reader, rss
• 
  PDF-XChange Editor

  The smallest, fastest and most feature-rich free PDF viewer/editor on the market.

  Proprietary 11.1.1.0 1.3M ↓ ebook, read, reader
• 
  Suwayomi Server

  A free and open source manga reader that runs extensions built for Mihon(Tachiyomi).

  Open source v2.4.2366 4.7K ↓ ★ 7.9K
• 
  gImageReader

  A Gtk/Qt front-end to tesseract-ocr.

  Open source 3.4.3 4.9K ↓ ★ 2K reader
• 
  OpenComic

  Comic and Manga reader, written with Node.js and using Electron

  Open source 1.6.5 1.1K ↓ ★ 2K ebook, epub, reader

Comparison

App	Licence	Version	Updated	GitHub stars	Chocolatey downloads
Reader	Open source	1.6.0	October 24, 2026	96	—
calibre	Open source	9.17.0	October 23, 2026	26.2K	1.5M
SumatraPDF	Open source	3.6.1	April 7, 2026	17.8K	3M
Sigil	Open source	2.8.1	July 18, 2026	7K	34.5K
BlueGriffon	Open source	3.1	July 20, 2025	359	34K
Kindle Comic Converter	Open source	12.0.0	September 27, 2026	5.9K	6K
Aausweisapp2	Open source	2.6.1		780	88K
YACReader	Open source	10.4.0	October 9, 2026	1.4K	9.3K
Fluent Reader	Open source	1.2.2	August 22, 2026	9.7K	610
PDF-XChange Editor	Proprietary	11.1.1.0	October 22, 2026	—	1.3M
Suwayomi Server	Open source	v2.4.2366	September 29, 2026	7.9K	4.7K
gImageReader	Open source	3.4.3	August 4, 2025	2K	4.9K
OpenComic	Open source	1.6.5	December 22, 2025	2K	1.1K