Skip to content
Prompt & SolderHow to Ask Claude
All builds
RRNo photo
Worked Proof shown

Kitab: a fast reader for PDF, EPUB, Markdown and comics

A developer built Kitab, a free open-source desktop reader in Rust and GPUI, with Claude, aiming for speed and a modern design.

—

Credits

  • Reddit poster TriptoAfsin Source ↗
  • Repository account t21dev Source ↗

Earliest dated source: 12 Nov 2026

Code ↗

The full story

Kitab is a free, open-source desktop reader for PDF, EPUB, MOBI, FB2, comics and Markdown, built with Claude. It is written in Rust, with the interface drawn on the GPU through GPUI and pages rendered by MuPDF, and has no browser engine inside.

It has tabs, a library with full-text search, reflowed e-books with typography settings, GitHub-flavoured Markdown with diagrams and maths, and PDF highlights, notes, form filling, signing and page tools. There is no account or telemetry.

It runs on Windows, macOS and Linux.

How it was done

Tools

Themes

Loading themes…

Sources

From a short post by the maker, so the details are as they tell them.

  • Reddit: I made a free, fast and open-source reader for PDF, EPUB, Markdown and comics, built with Rust and GForum threadreddit.com
    Reddit poster: TriptoAfsinPosted 12 Nov 2026

    The maker's post in r/ClaudeAI.

  • The code: github.comCode or repositorygithub.com
    Repository account: t21dev

    The reader's source code and downloads.

Related builds

Finding related builds…

Prompt & Solder

An independent community project. Not affiliated with Anthropic.

What this is. Real projects where people used Claude to build, fix, port, revive or take apart something, from jailbroken Kindles to rebuilt DOS games, plus the times it went badly wrong. Every build links to where it was shared, and every source is listed here.

How far to trust it. We summarise what people reported and say what each build rests on: a full write-up with code, a short post, or a passing comment. We haven't tested them ourselves. Photos are shown from the original sources with credit. Only modify hardware you own, and back up first.

Privacy. No accounts. Analytics cookies (Google Analytics) only if you accept them; no ads or cross-site tracking. Searches are counted anonymously (just the words) to show what's popular, and so are clicks on Ask Claude (just the count). The Claude connector only receives the search words your Claude sends it.

How toAsk ClaudeEvery sourceStatsSubmit a buildPrivacyRSS