Best Ebook Reader Software in 2026
Updated
In short: Readest is ranked #1 of 27 as of 4 October 2026, ahead of Libby and FBReader. The best-ranked option with a free plan is Libby. The lowest first paid tier on this page is Readest at $4.99/mo.
Reading digital books across devices or offline makes file compatibility and library handling worth checking before you settle on a reader. Compared on supported formats, library storage, offline reading, and reading sync, these options show different parts of the experience to weigh. Annotation tools may matter if you like to mark passages, while supported platforms, free plans, and paid-from pricing help you check access and cost. Readest, Libby, and Adobe Digital Editions are among the names to explore. Consider which formats you already use and whether your reading needs to travel between devices; the listed criteria can help you focus on the differences that matter for your routine.
27 ebook reader software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
27ranked
10free plans on this page
$4.99/molowest paid tier
4 Oct 2026last checked
Input list Ebook Reader Software 25 channels on this page · 109 of 200 spec lines stated by the makers
Ch Tool Free planPaid fromSupported platformsSupported formatsAnnotation toolsReading syncOffline readingLibrary storage Spec sheet Score
01 Readest Free planYesPaid from$4.99/moSupported platformsweb, Windows, macOS, Linux, iOS, AndroidSupported formatsEPUB, PDF, MOBI, AZW, AZW3, FB2, CBZ, ZIP, TXT, MarkdownAnnotation toolsYesReading syncYesOffline readingYesLibrary storage0.5 GB 8/8spec lines stated 7.9
02 Libby Free planYesPaid fromnot statedSupported platformsweb, windows, macos, ios, androidSupported formatsEPUB, PDFAnnotation toolsYesReading syncYesOffline readingYesLibrary storagenot stated 6/8spec lines stated 7.7
03 FBReader Free planYesPaid fromnot statedSupported platformsnot statedSupported formatsnot statedAnnotation toolsnot statedReading syncnot statedOffline readingnot statedLibrary storagenot stated 1/8spec lines stated 7.6
04 Adobe Digital Editions Free planYesPaid fromnot statedSupported platformsWindows, macOS, iOS, AndroidSupported formatsEPUB, EPUB3, PDFAnnotation toolsYesReading syncYesOffline readingYesLibrary storagenot stated 6/8spec lines stated 7.3
05 ReadEra Free planYesPaid fromnot statedSupported platformsiOS, Android, macOSSupported formatsEPUB, PDF, MOBI, AZW3, FB2, DOC, DOCX, RTF, ODT, DJVU, TXT, CHM, CBZ, CBRAnnotation toolsYesReading syncYesOffline readingYesLibrary storagenot stated 6/8spec lines stated 7.3
06 eBoox Free planYesPaid fromnot statedSupported platformsweb, iOS, AndroidSupported formatsEPUB, FB2, MOBI, PDF, DOC, DOCX, TXT, PRC, RTF, ODT, HTML, AZW, AZW3, CBR, CBZ, ZIP, RARAnnotation toolsYesReading syncYesOffline readingYesLibrary storagenot stated 6/8spec lines stated 7.2
07 Thorium Reader Free planYesPaid fromnot statedSupported platformsWindows, macOS, Linux, iOS, iPadOSSupported formatsEPUB 2/3, Fixed Layout EPUB, PDF, DAISY 2.02/3, Web PublicationsAnnotation toolsYesReading syncnot statedOffline readingYesLibrary storagenot stated 5/8spec lines stated 7.2
08 Kobo Books Free planYesPaid fromnot statedSupported platformsnot statedSupported formatsnot statedAnnotation toolsnot statedReading syncnot statedOffline readingnot statedLibrary storagenot stated 1/8spec lines stated 7.1
09 PocketBook Reader Free planYesPaid fromnot statedSupported platformsiOS, AndroidSupported formatsPDF (Adobe DRM), EPUB (Adobe DRM), DjVu, FB2, FB2.zip, MOBI, DOCX, RTF, TXT, CHM, HTML (Basic), CBZ, CBR, CBTAnnotation toolsYesReading syncYesOffline readingYesLibrary storagenot stated 6/8spec lines stated 7.0
10 Talebook Free plannot statedPaid fromnot statedSupported platformsweb, self hostedSupported formatsEPUB, PDF, MOBI, AZW3, TXTAnnotation toolsnot statedReading syncnot statedOffline readingnot statedLibrary storagenot stated 2/8spec lines stated 6.8
11 DinoReader Free planYesPaid fromnot statedSupported platformsAndroidSupported formatsEPUB, PDF, FB2, other book formatsAnnotation toolsYesReading syncYesOffline readingYesLibrary storagenot stated 6/8spec lines stated 6.7
12 Google Play Books Auto-narrated Audiobooks Free plannot statedPaid fromnot statedSupported platformsnot statedSupported formatsnot statedAnnotation toolsnot statedReading syncnot statedOffline readingnot statedLibrary storagenot stated 0/8spec lines stated 6.7
13 MLOL Reader Free planYesPaid fromnot statedSupported platformsWindows, macOS, Linux, iOS, AndroidSupported formatsEPUB, PDFAnnotation toolsYesReading syncnot statedOffline readingnot statedLibrary storagenot stated 4/8spec lines stated 6.5
14 Bluefire Reader Free planNoPaid fromnot statedSupported platformsiOS, Android, Windows, macOSSupported formatsEPUB2, EPUB3, PDFAnnotation toolsYesReading syncYesOffline readingnot statedLibrary storagenot stated 5/8spec lines stated 6.4
15 Moon+ Reader Free planYesPaid fromnot statedSupported platformsAndroidSupported formatsEPUB, PDF, DJVU, AZW3, MOBI, FB2, PRC, CHM, CBZ, CBR, UMD, DOCX, ODT, RTF, TXT, HTML, MHT/MHTML, MD (MarkDown), WEBP, RAR, ZIP, OPDSAnnotation toolsYesReading syncYesOffline readingYesLibrary storagenot stated 6/8spec lines stated 6.4
16 Calibre-Web Free planYesPaid fromnot statedSupported platformsweb, Windows, macOS, Linux, self-hostedSupported formatsTXT, PDF, EPUB, KEPUB, CBZ, CBT, CBR, DJVU, DJVAnnotation toolsnot statedReading syncYesOffline readingnot statedLibrary storagenot stated 4/8spec lines stated 6.2
17 KOReader Free planYesPaid fromnot statedSupported platformsKindle, Kobo, PocketBook, Android, desktop Linux; macOS emulatorSupported formatsEPUB, PDF, DjVu, XPS, CBT, CBZ, FB2, PDB, TXT, HTML, RTF, CHM, DOC, MOBI, ZIPAnnotation toolsYesReading syncYesOffline readingnot statedLibrary storagenot stated 5/8spec lines stated 6.1
18 Librera Reader Free planYesPaid fromnot statedSupported platformsAndroid, webSupported formatsPDF, EPUB, EPUB3, MOBI, DjVu, FB2, FB2.ZIP, TXT, RTF, AZW, AZW3, HTML, CBZ, CBR, DOC, DOCX, ODT, XPS, TIFF, PDB, MHTAnnotation toolsYesReading syncYesOffline readingnot statedLibrary storagenot stated 5/8spec lines stated 6.0
19 Yomu EBook Reader Free planYesPaid fromnot statedSupported platformsiOS, macOSSupported formatsEPUB, MOBI, Kindle AZW/AZW3/KF8, CBZ, CBR, PDFAnnotation toolsYesReading syncYesOffline readingYesLibrary storagenot stated 6/8spec lines stated 6.0
20 KyBook 3 Free planYesPaid fromnot statedSupported platformsiOS, macOSSupported formatsEPUB (DRM-free), PDF (DRM-free), MOBI, AZW3, DjVu, FB2, FB2.ZIP, CBR, CBZ, CBT, MP3, M4A, M4B, TXT, RTFAnnotation toolsYesReading syncYesOffline readingnot statedLibrary storagenot stated 5/8spec lines stated 5.9
21 BookFusion Free planYesPaid from$1.99/moSupported platformsnot statedSupported formatsnot statedAnnotation toolsnot statedReading syncnot statedOffline readingnot statedLibrary storagenot stated 2/8spec lines stated 5.8
22 Foliate Free planYesPaid fromnot statedSupported platformslinuxSupported formatsEPUB, Mobipocket, Kindle, FB2, CBZ, PDFAnnotation toolsYesReading syncYesOffline readingnot statedLibrary storagenot stated 5/8spec lines stated 5.8
23 Bookworm Free planYesPaid fromnot statedSupported platformslinuxSupported formatsEPUB, PDF, MOBI, FB2, CBR, CBZAnnotation toolsYesReading syncnot statedOffline readingnot statedLibrary storagenot stated 4/8spec lines stated 5.7
24 Komikku Free planYesPaid fromnot statedSupported platformsLinuxSupported formatsCBZ, CBR, CBT, EPUB, PDFAnnotation toolsnot statedReading syncnot statedOffline readingYesLibrary storagenot stated 4/8spec lines stated 5.7
25 Kindle Create Free planYesPaid fromnot statedSupported platformsnot statedSupported formatsnot statedAnnotation toolsnot statedReading syncnot statedOffline readingnot statedLibrary storagenot stated 1/8spec lines stated 5.6
Compare all 25 in a table
| # | Tool | Score | Free plan | From | Free plan | Paid from | Supported platforms | Supported formats |
|---|---|---|---|---|---|---|---|---|
| 1 | Readest | 7.9 | Free plan | $4.99/mo | Yes | 4.99 /mo | web, Windows, macOS, Linux, iOS, Android | EPUB, PDF, MOBI, AZW, AZW3, FB2, CBZ, ZIP, TXT, Markdown |
| 2 | Libby | 7.7 | Free plan | Free | Yes | — | web, windows, macos, ios, android | EPUB, PDF |
| 3 | FBReader | 7.6 | Free plan | Free | Yes | — | — | — |
| 4 | Adobe Digital Editions | 7.3 | Free plan | Free | Yes | — | Windows, macOS, iOS, Android | EPUB, EPUB3, PDF |
| 5 | ReadEra | 7.3 | Free plan | Free | Yes | — | iOS, Android, macOS | EPUB, PDF, MOBI, AZW3, FB2, DOC, DOCX, RTF, ODT, DJVU, TXT, CHM, CBZ, CBR |
| 6 | eBoox | 7.2 | Free plan | Free | Yes | — | web, iOS, Android | EPUB, FB2, MOBI, PDF, DOC, DOCX, TXT, PRC, RTF, ODT, HTML, AZW, AZW3, CBR, CBZ, ZIP, RAR |
| 7 | Thorium Reader | 7.2 | Free plan | Free | Yes | — | Windows, macOS, Linux, iOS, iPadOS | EPUB 2/3, Fixed Layout EPUB, PDF, DAISY 2.02/3, Web Publications |
| 8 | Kobo Books | 7.1 | No | $7.99/mo | Yes | — | — | — |
| 9 | PocketBook Reader | 7.0 | Free plan | Free | Yes | — | iOS, Android | PDF (Adobe DRM), EPUB (Adobe DRM), DjVu, FB2, FB2.zip, MOBI, DOCX, RTF, TXT, CHM, HTML (Basic), CBZ, CBR, CBT |
| 10 | Talebook | 6.8 | No | — | — | — | web, self_hosted | EPUB, PDF, MOBI, AZW3, TXT |
| 11 | DinoReader | 6.7 | Free plan | Free | Yes | — | Android | EPUB, PDF, FB2, other book formats |
| 12 | Google Play Books Auto-narrated Audiobooks | 6.7 | Free plan | Free | — | — | — | — |
| 13 | MLOL Reader | 6.5 | No | — | Yes | — | Windows, macOS, Linux, iOS, Android | EPUB, PDF |
| 14 | Bluefire Reader | 6.4 | No | — | No | — | iOS, Android, Windows, macOS | EPUB2, EPUB3, PDF |
| 15 | Moon+ Reader | 6.4 | No | — | Yes | — | Android | EPUB, PDF, DJVU, AZW3, MOBI, FB2, PRC, CHM, CBZ, CBR, UMD, DOCX, ODT, RTF, TXT, HTML, MHT/MHTML, MD (MarkDown), WEBP, RAR, ZIP, OPDS |
| 16 | Calibre-Web | 6.2 | No | — | Yes | — | web, Windows, macOS, Linux, self-hosted | TXT, PDF, EPUB, KEPUB, CBZ, CBT, CBR, DJVU, DJV |
| 17 | KOReader | 6.1 | No | — | Yes | — | Kindle, Kobo, PocketBook, Android, desktop Linux; macOS emulator | EPUB, PDF, DjVu, XPS, CBT, CBZ, FB2, PDB, TXT, HTML, RTF, CHM, DOC, MOBI, ZIP |
| 18 | Librera Reader | 6.0 | No | — | Yes | — | Android, web | PDF, EPUB, EPUB3, MOBI, DjVu, FB2, FB2.ZIP, TXT, RTF, AZW, AZW3, HTML, CBZ, CBR, DOC, DOCX, ODT, XPS, TIFF, PDB, MHT |
| 19 | Yomu EBook Reader | 6.0 | No | — | Yes | — | iOS, macOS | EPUB, MOBI, Kindle AZW/AZW3/KF8, CBZ, CBR, PDF |
| 20 | KyBook 3 | 5.9 | No | — | Yes | — | iOS, macOS | EPUB (DRM-free), PDF (DRM-free), MOBI, AZW3, DjVu, FB2, FB2.ZIP, CBR, CBZ, CBT, MP3, M4A, M4B, TXT, RTF |
| 21 | BookFusion | 5.8 | No | — | Yes | 1.99 /mo | — | — |
| 22 | Foliate | 5.8 | No | — | Yes | — | linux | EPUB, Mobipocket, Kindle, FB2, CBZ, PDF |
| 23 | Bookworm | 5.7 | No | — | Yes | — | linux | EPUB, PDF, MOBI, FB2, CBR, CBZ |
| 24 | Komikku | 5.7 | No | — | Yes | — | Linux | CBZ, CBR, CBT, EPUB, PDF |
| 25 | Kindle Create | 5.6 | No | — | Yes | — | — | — |
Is your tool on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.
Questions about this list
Which ebook reader software is ranked first on Specifiction?
Readest is ranked #1 of 27 with a score of 7.9. Libby is second and FBReader third.
How many of these have a free plan?
10 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Readest has the lowest first paid tier we found: $4.99/mo.
How is this list ranked?
Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.
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