[whatever1]

Today I wanted to build a simple ui that maps time across 3 time zones.

After spending some time thinking about using it across my Mac and Linux machines, I just had Claude write an html file.

Nice, simple runs everywhere.

[HPsquared]

Local HTML files with embedded JavaScript are fantastic for mini portable apps. You can even load/save files with some finesse.

[geophph]

Simon Willison has mentioned this (portable html / js apps) before and has a collection online

https://tools.simonwillison.net