11 interesting things surfaced from HN on 2026-04-20

A SQL-based visualization DSL that commenters found compelling and worth trying.

Commenters said ggsql looked awesome, liked it, and would try it soon.

A low-cost coding model family praised for strong results and good price/performance.

One commenter said GLM-5 is really good, especially on pricing, and another used GLM-5.1 with Claude Code.

A budget-friendly coding model that one commenter says they rely on heavily.

A commenter said they get all their coding done with MiniMax M2.5 in parallel sessions for $10/month.

Linux app sandboxing and packaging system.

A commenter preferred the Flatpak solution because it gives very detailed, fine-grained control.

Portable infrared sauna bag alternative.

A commenter said IR sauna bags you can buy online work great and give the same effects as a sauna.

Open-source ebook library manager and format converter.

A comment called Calibre the escape hatch and the best tool for getting a library out of Amazon's format.

Alternative e-reader ecosystem with broad reader support.

A user said they switched to the Kobo ecosystem and have been pretty happy.

Customizable ebook reader app for dedicated e-readers.

A user said they use KOReader and the UI is now stable and tailored to their taste.

Library borrowing app for instant ebook checkout.

A user said Libby hooks into many US library systems and feels hugely convenient and magical.

EPUB and comics reader with Calibre wireless sync.

A user said they ended up on BookShelves after trying a few options; it reads EPUBs and comics and has Calibre sync.

Pocketable e-ink reader praised for portability.

A user said they bought the xteink X4 and called it a great little device.