Dev tools · alternatives · 2026
24 alternatives to Rulibre
I got tired of Calibre's heavy interface when all I needed was browsing my library and sending books to my e-reader. So I built Rulibre, a terminal UI that works directly with your existing Calibre library structure, no migration needed. Features: - Browse books sorted by author/title with a detail panel (metadata parsed from Calibre's .opf files) - Instant search/filter across author, title, and format - Send books to Kindle/Kobo with automatic EPUB→KEPUB conversion for Kobo - Convert between formats using kepubify or Calibre's ebook-convert - Mouse and keyboard support It's…
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
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 →
- 2
Srcbook (”source-book”) is an open-source TypeScript notebook that runs locally, powered by Node.js. It shines for rapid prototyping, code exploration, and collaborating on ideas. It’s inspired by Python’s Jupyter and Elixir’s Livebook. Key features: - Full npm ecosystem access - AI-assisted coding (OpenAI, Anthropic, or local models), it can iterate on the cells for you with a code diff UX that you accept/reject for a given code cell, generate entire Srcbooks, fix compilation issues, etc… - Exports to valid markdown for easy sharing and version control Try it now: `npx srcbook start`…
2024 · github.com · its alternatives →
- 3
Convert any eBook to any format (free and open source)
2014 · calibre-ebook.com · its alternatives →
- 4
QuickPiperAudiobook locally generates an mp3 audiobook on Linux with one easy command. It can convert PDFs, epub, mobi, and many more by using ebook-convert. It uses any piper TTS model, and thus supports a wide variety of languages. I've had great success using it to read more while reducing eye strain and computer usage. I think I've probably read 30 or so books this way now over the past year. Being able to listen to any content you want in audio form free and offline while going for a walk is extremely handy. I hope it helps you as well! Cheers
2024 · github.com · its alternatives →
- 5
I'm excited to showcase Kreuzberg! Kreuzberg is a modern Python library built from the ground up with async/await, type hints, and optimized I/O handling. It provides a unified interface for extracting text from documents (PDFs, images, office files) without external API dependencies. Key technical features: - Built with modern Python best practices (async/await, type hints, functional-first) - Optimized async I/O with anyio for multi-loop compatibility - Smart worker process pool for CPU-bound tasks (OCR, doc conversion) - Efficient batch processing with concurrent…
2025 · github.com · its alternatives →
- 6
Hi HN! This is my pet project, written from scratch because there is so much to discover and learn in the process. The focus is on simplicity and incremental updates. Progress is slow because I do not have much spare time to work on this, but I would love to hear some feedback. Regards
2022 · github.com · its alternatives →
- 7
Kindle Comic Converter optimizes comics and manga for eink readers like Kindle, Kobo, ReMarkable, and more. Pages display in fullscreen without margins, with proper fixed layout support. Its main feature is various optional image processing steps to look good on eink screens, which have different requirements than normal LCD screens. It also does filesize optimization by downscaling to your specific device's screen resolution, which can improve performance on underpowered ereaders. Supported input formats include folders/CBZ/CBR/PDF of JPG/PNG files and more. Supported…
2025 · github.com · its alternatives →
- 8
b2blaze. Contribute to sibblegp/b2blaze development by creating an account on GitHub.
2018 · github.com · its alternatives →
- 9
fast, rust based epub library for python. Contribute to arc53/fast-ebook development by creating an account on GitHub.
Apr 2026 · github.com · its alternatives →
- 10
Hi HN! Last year, we shared marimo [1], an open-source reactive notebook for Python with support for execution through WebAssembly [2]. We wanted to share something new: you can now run marimo and Jupyter notebooks directly from GitHub in a Wasm-powered, codespace-like environment. What makes this powerful is that we mount the GitHub repository's contents as a filesystem in the notebook, making it really easy to share notebooks with data. All you need to do is prepend 'marimo.app' to any Python notebook on GitHub. Some examples: - Jupyter Notebook:…
2025 · docs.marimo.io · its alternatives →
- 11
- 12
Nodebook - Multi-Lang Web REPL + CLI Code runner. Contribute to netgusto/nodebook development by creating an account on GitHub.
2018 · github.com · its alternatives →
- 13
- 14
Nodebook - Multi-Lang Web REPL + CLI Code runner. Contribute to netgusto/nodebook development by creating an account on GitHub.
2020 · github.com · its alternatives →
- 15KA
2019 · krabby.netlify.com · its alternatives →
- 16BA
2019 · bamboolib.com · its alternatives →
- 17
A tool for refurbishing and modernizing Python codebases - dosisod/refurb
2022 · github.com · its alternatives →
- 18
- 19
Modern declarative (React-like) Tcl/Tk interface for Python - leontrolski/tkintergalactic
2025 · github.com · its alternatives →
- 20
Easy to use Google Pub/Sub. Contribute to mercadona/rele development by creating an account on GitHub.
2019 · github.com · its alternatives →
- 21
Today we’re releasing a full AI app builder in Srcbook. We released our TypeScript notebook a few months ago (https://news.ycombinator.com/item?id=41291700) and the response was encouraging, but we kept hearing that people wanted to build interactive apps. Today we are releasing just that. You can think of it as an open-source and local version of vercel’s v0. We actually think of it as something in between an IDE and that, because we believe the code matters and don’t shy away from that: you can view and edit the code in a full editor, but prompt your way forward if that's…
2024 · github.com · its alternatives →
- 22
Historical tick-level order book updates, trades, quotes, open interest, funding, liquidations, options chains and more. API access and downloadable CSV files. Real-time consolidated market data streaming API via client libraries that connect directly to exchanges
2019 · tardis.dev · its alternatives →
- 23
HTTP client/libcurl TUI front end in Rust, with request + key storage - PThorpe92/CuTE
2023 · github.com · its alternatives →
- 24
Shelvy Books▲52Hey HN! I built a little side project I wanted to share. Shelvy is a free, visual bookshelf app where you can organize books you're reading, want to read, or have finished. Sign in to save your own collection. Not monetized, no ads, no tracking beyond basic auth. Just a fun weekend project that grew a bit. Live: https://shelvybooks.com Would love any feedback on the UX or feature ideas!
Jan 2026 · shelvybooks.com · its alternatives →
Also compare
- Citadel – a Calibre-compatible eBook management app alternatives
- Srcbook – A TypeScript notebook for rapid prototyping alternatives
- Calibre eBook Manager alternatives
- Offline audiobook from any format with one CLI command alternatives
- Kreuzberg – Modern async Python library for document text extraction alternatives
- I am building a new Python library to read/write PDF files 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 →