The short version
Jane Street's OCaml library for dense, interactive web and terminal interfaces.
From the HackerLinks archive
Bonsai
Jane Street's OCaml library for dense, interactive web and terminal interfaces.
At a glance:
First seen:2026-08-04
Last seen:2026-08-04
Times seen:1
Website:github.com
Why it caught our attention
HN commenters valued its utility-first interface model and reported using its terminal implementation.
Where it surfaced on Hacker News
2026-08-04
“This is great. It focuses on utility and information density over design. It looks like someone took a terminal UI and transplanted it to the web, Bloomberg terminal style. I'm pretty sure you can build tools with this that are fast and pleasant to use.”
MrBuddyCasino · recommendation
Direct HN comment
“There's a full terminal implementation of Bonsai as well. I actually use it in my personal workflow these days to manage my contacts database!”
avsm · recommendation · first hand use
Direct HN comment
Bonsai: Janestreet's UI Library
Also surfaced in this discussion
Signals and Threads: Building a UI Framework
Bonsai: Janestreet's UI Library
2026-08-04