Komga vs Kavita vs BiblioFuse: Best CBZ, CBR & EPUB Reader Alternatives in 2026

If you're comparing self-hosted comic and ebook servers, the two names that come up most are Komga and Kavita — both free, open-source, and genuinely good at reading CBZ, CBR, and (for Kavita) EPUB files from your own storage. Calibre-Web and Ubooquity are two more long-running options worth knowing about. BiblioFuse takes a different approach: instead of a server you assemble yourself plus a third-party client app, it ships one connected app family — phone, tablet, Mac, PC, Apple Vision Pro, Apple TV, and Android TV — built by a single team, with a free self-hosted server for anyone who wants that too.

None of these is objectively "best" for everyone. This guide compares what each one actually does well, where it falls short, and which one fits your setup.

Why This Comparison Matters Now

Digital comic and ebook collections have outgrown Kindle-style walled gardens. Readers scan their own physical collections, download from scanlation and fan-translation communities, or just prefer owning files instead of renting access to them. That collection typically lives on a NAS, an old PC, or a folder on a Mac — and the question becomes: what actually reads it, on every device you own, without you becoming a part-time systems administrator?

That question has gotten harder to answer, not easier. Komga and Kavita have matured into genuinely capable servers. Meanwhile, the client side of that equation — the actual app on your phone, tablet, or TV — is usually a separate project from a different, independent developer, with its own release cadence, its own bugs, and no guarantee it's still maintained next year.

What to Actually Look For

Before comparing products, it helps to separate the two jobs a comic/ebook system does:

Hosting — where your files live and how a server organizes and serves them.
Reading — the actual app or web page you touch every day, across every device you use.

Some tools only do one of these well. Keep both in mind as you read the comparisons below.

The Alternatives Compared

	Komga	Kavita	Calibre-Web	Ubooquity	BiblioFuse
Formats	CBZ, CBR, PDF	CBZ, CBR, CB7, CBT, ZIP, RAR, 7zip, PDF, EPUB	EPUB (via Calibre)	EPUB, CBZ, CBR, PDF	EPUB, PDF, CBZ, CBR, RAR, ZIP, TXT
Official first-party mobile app	No — third-party only	No — third-party only	No — browser only	No — browser/OPDS only	Yes — iPhone, iPad, Mac, Vision Pro, Apple TV, Android, Android TV, Windows
Folder handling	Strict one-folder-one-series	Flexible, metadata-assisted	Calibre library import	Flat folder scan	Reads your existing folders as-is, no reorganizing
Built-in compression tool	No	No	No	No	Yes — resize, WebP/JPG re-encode, merge
Stream instead of store locally	Via OPDS clients only	Via OPDS clients only	No	Via OPDS clients only	Yes, first-party (Local Wi-Fi, Tailscale, iCloud)
Synology setup	Container Manager / Docker	Container Manager / Docker	Docker	Docker or Java	Native Package Center app with a folder picker
UI languages	Community-contributed	13+ via community Weblate	Community-contributed	Limited	11, first-party
Cost	Free, open source	Free, open source	Free, open source	Free	Free self-hosting; app purchase unlocks Pro features

Komga: Best for a Pure Comic and Manga Library

Komga is a comics-and-manga specialist. It doesn't try to be an ebook reader — no EPUB support — and that focus shows in its polish: a solid REST API, OPDS v2 support, and tight integration with Tachiyomi and other manga-tracking apps. Its metadata scraping is genuinely good if you keep a large, curated manga collection.

The tradeoff is structure. Komga expects one folder per series. If your library doesn't already follow that convention, you'll spend time reorganizing files before Komga is happy with it.

Good for: manga-focused libraries, Tachiyomi users, anyone comfortable running Docker and comfortable reorganizing files to match Komga's folder convention.

Watch out for: no ebook (EPUB) support, no official app — you'll pair it with a third-party client like Komic, KMReader, or Panels, each maintained independently of Komga itself.

Kavita: Best All-Rounder for Comics and Ebooks Together

Kavita is the broadest single server on this list — comics, manga, and ebooks (EPUB, PDF) in one library, with more forgiving folder scanning than Komga and useful extras like AniList metadata and per-cover accent colors. It's a genuinely strong pick if you want one server for everything and don't mind Docker.

Its 13+ community-translated languages sound impressive, but coverage depends on volunteer translators through Weblate — some languages are more complete than others, and there's no first-party commitment to keeping every locale current.

Good for: mixed comic + ebook libraries, people who want the single most feature-complete self-hosted server, users who don't mind a partially community-translated UI.

Watch out for: same story as Komga on the client side — no official first-party app, so you're pairing it with a third-party reader like Panels or Komic.

Calibre-Web: Best If You Already Use Calibre

Calibre-Web is a thin, clean web front end for an existing Calibre ebook library. If you've spent years organizing books in Calibre and just want browser access to them, it does that job well.

It isn't built for comics the way Komga and Kavita are, and it has no dedicated mobile or TV app — it's a browser experience, full stop.

Good for: existing Calibre users who mainly want remote/mobile-browser access to an ebook library.

Watch out for: comics are a secondary use case at best; no native app on any platform.

Ubooquity: Best Lightweight, No-Frills Option

Ubooquity has been around a long time and stays true to its pitch: a small, simple, Java-based server with a built-in OPDS feed. It runs on almost anything, including older or underpowered NAS hardware that might struggle with Komga or Kavita's larger footprints.

It's also the most basic of the four alternatives here — fewer features, a dated interface, and, like the others, no first-party app.

Good for: low-powered hardware, anyone who wants the smallest possible footprint and doesn't need modern extras.

Watch out for: the least actively developed of the group; still browser/OPDS-only.

BiblioFuse: Best for a Zero-Setup, One-Vendor Ecosystem

BiblioFuse starts from a different premise: most people don't want to run a server and separately shop for a third-party client that might get abandoned. So the app and the host are built by the same team, and both are designed so a non-technical person can set them up.

What that looks like in practice:

Manages by folder or tag, not enforced metadata. BiblioFuse doesn't require metadata scraping to be useful, and it doesn't impose Komga's strict one-folder-one-series rule.
Never reorganizes your files. It reads your library exactly as you already have it laid out — no import step, no folder convention to match.
Built to save device storage, not just serve files. A built-in compress/resize/merge tool (EPUB, PDF, CBZ, CBR, RAR, ZIP — resize to a target resolution, re-encode to WebP or JPG) and the ability to stream a library from a host instead of downloading it locally. None of the four alternatives above have a built-in compression tool.
Setup that doesn't require typing an IP address. On Synology, the native Package Center app gives you a folder picker instead of a container path to type. On the client side, apps auto-discover a host over Local Wi-Fi, or connect automatically through iCloud + Tailscale on Apple devices — no manually entering a server URL or OPDS endpoint.
One ecosystem, one vendor. iPhone, iPad, Mac, Apple Vision Pro, Apple TV, Android phone, Android tablet, Android TV, and Windows PC all run apps built and maintained by the same team — not a self-hosted server glued to whichever third-party client happens to still be maintained.
11 first-party UI languages (English, Spanish, French, Dutch, Portuguese, Russian, Chinese, Japanese, Korean, Indonesian, Malay), not community-dependent coverage.
Reading progress follows you everywhere — phone, tablet, Mac, PC, TV, or headset — because it's one product, not independent apps syncing through OPDS.

To be fair about where BiblioFuse is not ahead: Komga and Kavita have more mature metadata-scraping ecosystems for large curated manga libraries, and Kavita reads a couple of niche archive formats (7zip, CBT) that BiblioFuse doesn't. BiblioFuse's free Docker/Synology browser reader is also more basic than its native apps — no PDF support yet, no text-to-speech or peek zoom.

Good for: anyone who wants a working setup in minutes instead of an afternoon, households with a mix of Apple, Android, and Windows devices, anyone who wants their existing folder structure to just work, and anyone reading on Apple TV, Android TV, or Vision Pro specifically.

Watch out for: less mature metadata scraping than Komga/Kavita for large curated manga libraries; the free browser reader on Docker/Synology doesn't yet read PDF.

Which Should You Choose?

Pure manga collection, want Tachiyomi integration: Komga.
Want one server for comics and ebooks together, don't mind Docker: Kavita.
Already invested in a Calibre library: Calibre-Web.
Old or low-power hardware, want the lightest option: Ubooquity.
Want it to just work across Apple, Android, and Windows devices — including Vision Pro, Apple TV, or Android TV — without becoming a systems administrator: BiblioFuse.

Frequently Asked Questions

Does Komga have an official iPhone app? No. Komga has no first-party mobile app. iPhone users connect through a third-party client such as Komic, KMReader, or Panels, each built and maintained independently of the Komga project.

Is Kavita free? Yes, Kavita is free and open source. Like Komga, you'll still need a separate third-party app (or a browser/OPDS client) to read on mobile or TV, since Kavita itself doesn't ship one.

What's the best free self-hosted alternative to Komga? Kavita is the closest free alternative if you also want EPUB/ebook support in the same server. BiblioFuse's Docker and Synology hosting are also free, with the difference being a matching first-party app on every device instead of a separate third-party client.

Can any of these read directly from an SMB or NAS share without reorganizing files? Kavita's scanning is the most forgiving of the open-source options, but Komga still expects one-folder-per-series. BiblioFuse reads your existing folder layout as-is on any of these, with no import or reorganization step, and Synology setup uses a GUI folder picker rather than a typed path.

Do I need Docker to self-host any of these? Komga, Kavita, Calibre-Web, and Ubooquity are all typically deployed via Docker (Ubooquity can also run on any machine with Java). BiblioFuse's Docker and Synology Package Center hosting cover the same self-hosting use case, with the Synology package specifically built to avoid needing Docker or command-line setup.

Does BiblioFuse work on Apple TV or Android TV? Yes — BiblioFuse has native apps for both, streaming from a Mac, PC, Docker, or Synology host. None of Komga, Kavita, Calibre-Web, or Ubooquity have an official TV app on either platform.

The Bottom Line

Komga and Kavita are excellent, mature servers — pick one of them if you're comfortable running Docker and pairing it with a separate mobile client. If you'd rather have one app family that just works across every device you own, from an iPhone to a Vision Pro to an Android TV, with your existing folder structure staying exactly as it is, try BiblioFuse — it's free to self-host, and the reader apps are free to use.