Fluent Reader alternatives

12 Windows apps in the same category as Fluent 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 cross-platform, foss, 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 reader
• 
  BlueGriffon

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

  Open source 3.1 34K ↓ ★ 359 cross-platform
• 
  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
• 
  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 foss, open-source
• 
  YACReader

  Read, browse and manage your comics collection.

  Open source 10.4.0 9.3K ↓ ★ 1.4K foss, read, reader
• A
  ausweisapp2

  Authenticate to websites with german ID.

  Open source 2.6.1 88K ↓ ★ 780 reader
• 
  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
• 
  PDF-XChange Editor

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

  Proprietary 11.1.1.0 1.3M ↓ read, reader
• 
  gImageReader

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

  Open source 3.4.4 4.9K ↓ ★ 2K reader
• 
  OpenComic

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

  Open source 1.6.5 1.1K ↓ ★ 2K electron, windows, macos
• 
  Houdoku

  Manga reader and library manager for the desktop

  Open source 2.16.0 415 ↓ ★ 1.1K electron, react, typescript

Comparison

App	Licence	Version	Updated	GitHub stars	Chocolatey downloads
Fluent Reader	Open source	1.2.2	August 22, 2026	9.7K	610
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
BlueGriffon	Open source	3.1	July 20, 2025	359	34K
Sigil	Open source	2.8.1	July 18, 2026	7K	34.5K
Suwayomi Server	Open source	v2.4.2366	September 29, 2026	7.9K	4.7K
YACReader	Open source	10.4.0	October 9, 2026	1.4K	9.3K
Aausweisapp2	Open source	2.6.1		780	88K
Kindle Comic Converter	Open source	12.0.0	September 27, 2026	5.9K	6K
PDF-XChange Editor	Proprietary	11.1.1.0	October 22, 2026	—	1.3M
gImageReader	Open source	3.4.4	October 26, 2026	2K	4.9K
OpenComic	Open source	1.6.5	December 22, 2025	2K	1.1K
Houdoku	Open source	2.16.0	December 17, 2024	1.1K	415