Lacuna Book Formatter
Format Your Manuscript into a Beautiful Book in Minutes
What it does
Lacuna is the book formatting app for Windows and Mac that simplifies turning yourdocx manuscript into professional print books and eBooks. We give you complete control over your book's layout without needing any technical knowledge. You can download the app and use it as much as you want before purchasing. You only pay a one-time fee for a lifetime license when you are happy with the product and are ready to generate your final PDF/ePub files.
Does the same job
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- Manuscripts.appMay 2026 · manuscripts-app.com · ▲87
For academics who have outgrown the spreadsheet tracker

- LALibrario, a book metadata API that aggregates G Books, ISBNDB, and moreJan 2026 · ▲140
TLDR: Librario is a book metadata API that aggregates data from Google Books, ISBNDB, and Hardcover into a single response, solving the problem of no single source having complete book information. It's currently pre-alpha, AGPL-licensed, and available to try now[0]. My wife and I have a personal library with around 1,800 books. I started working on a library management tool for us, but I quickly realized I needed a source of data for book information, and none of the solutions available provided all the data I needed. One might provide the series, the other might provide genres, and another…
- IBI built library management app for those who outgrew spreadsheets2025 · librari.io · ▲92
I've been working on librari.io for the past several months and just launched the beta version. The Problem: I have 500+ books across multiple rooms in my house and was desperately looking for an app to manage them properly. Most library management apps are either too basic or designed for institutional libraries with rigid workflows that don't fit personal use. What I Built: - Multiple libraries: manage collections in different locations - Location tracking - remember exactly which shelf each book is on - Loan management - track books you've lent to friends - Custom fields & tags - store…
- SBShelvy BooksJan 2026 · shelvybooks.com · ▲52
Hey 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!
More work this month
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The app store for voice native apps that lives in your notch
Work · 28d ago · voiceos.com


Mac-native app for screenshots, recordings and collaboration
Work · 5d ago · cleanshot.com
Launched alongside, April 2026
the whole month →
- AG
Thought the resources for GPU arch were lacking, so here we are
Life & fun · Apr 2026 · jaso1024.com
- IB
Built a ~9M param LLM from scratch to understand how they actually work. Vanilla transformer, 60K synthetic conversations, ~130 lines of PyTorch. Trains in 5 min on a free Colab T4. The fish thinks the meaning of life is food. Fork it and swap the personality for your own character.
AI · Apr 2026 · github.com

- BC
Life & fun · Apr 2026 · sam-burns.com
- IB
With social media and now AI, its important to keep the indie web alive. There are many people who write frequently. Blogosphere tries to highlight them by fetching the recent posts from personal blogs across many categories. There are two versions: Minimal (HN-inspired, fast, static): https://text.blogosphere.app/ Non-minimal: https://blogosphere.app/ If you don't find your blog (or your favorite ones), please add them. I will review and approve it.
AI · Apr 2026 · text.blogosphere.app