Dev tools · alternatives · 2026

24 alternatives to Calibre eBook Manager

Convert any eBook to any format (free and open source)

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Calibre eBook Manager launched in 2014; newer entries below may have overtaken it.

1. 1
   Calibre 2.0▲76

   The one stop solution to all your ebook needs

   2014 · its alternatives →

2. 2
   eBook Generator▲142

   Transform your PDF into a beautiful eBook

   2014 · hub.uberflip.com · its alternatives →

3. 3
   SE eBook▲152

   SE eBook

   2014 · gumroad.com · its alternatives →

4. 4
   Liberio▲144

   Simple eBook creation and publishing right from Google Drive

   2014 · its alternatives →

5. 5
   Citadel – a Calibre-compatible eBook management app▲338

   Hey folks! This winter I've been building Citadel to scratch my itch of managing ebooks without using Calibre. Calibre is incredibly powerful, but it's slow and awkward to use. I dreamed of writing a native app (and originally tried this in Swift), but ran into issues building the UI. Plus, whatever I built would only work on macOS. I started writing Citadel using Tauri (Svelte on the frontend + Rust on the backend) to have a cross-platform desktop app. Plus, Citadel supports running in a headless / webbrowser mode. You can self-host a Citadel server that manages your library, and…

   2024 · github.com · its alternatives →

6. 6
   Liberio▲86

   One click eBook publishing from Google Drive (pre-launch)

   2013 · its alternatives →

7. 7
   Tablo▲115

   Medium for ebooks.

   2014 · tablo.io · its alternatives →

8. 8
   Weekend software products▲65

   Free eBook on Building Software Products in a Weekend

   2014 · its alternatives →

9. 9
   Beacon▲110

   Create a beautiful ebook from blog posts in seconds

   2016 · beacon.by · its alternatives →

10. 10
    Epub.to – ePub to pdf, mobi, Kindle, and an API▲246

    EPUB.to converts EPUB to PDF, MOBI, AZW3, TXT, and more. Convert any document to EPUB for e-readers. The easiest way to manage, convert, and optimize eBook files online for free.

    2021 · epub.to · its alternatives →

11. 11
    docs2epub▲201

    Get your favorite docs as eBooks

    2016 · javier.xyz · its alternatives →

12. 12
    Doc Hub▲127

    Edit, send & sign PDFs online for free.

    2015 · dochub.com · its alternatives →

13. 13
    Safari ▲97

    Spotify for Ebooks

    2014 · oreilly.com · its alternatives →

14. 14
    Ebookany▲132

    Turn any web content into your personal ebook, instantly

    2024 · ebookany.com · its alternatives →

15. 15
    OverDrive▲62

    eBook lending for free through public libraries

    2014 · overdrive.com · its alternatives →

16. 16
    PitchXO▲132

    Goodbye PDFs. Beautiful pitch pages you can track.

    2014 · pitchxo.com · its alternatives →

17. 17
    Sign and Return▲119

    Free PDF filling and signing over email.

    2016 · signandreturn.com · its alternatives →

18. 18
    Pressbooks▲108

    Create books: print and ebooks

    2015 · pressbooks.com · its alternatives →

19. 19
    Marvin▲63

    eBook reader for iOS. Your books, everywhere.

    2014 · appstafarian.com · its alternatives →

20. 20
    Magic Bookifier▲89

    Turn your ideas into a book in one click

    2023 · magicbookifier.ai · its alternatives →

21. 21
    KimDigest▲93

    Open source reader for beyond RSS

    2014 · its alternatives →

22. 22
    Conversion AI▲89

    Find the right tools to convert almost any file

    2015 · conversionai.com · its alternatives →

23. 23
    PDFLeads▲91

    Get more leads from your pdf content

    2015 · pdfleads.com · its alternatives →

24. 24
    Authorea▲94

    GitHub for scientific works

    2014 · authorea.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →