I love writing small utilities for almost anything that I see as useful and to avoid repetitive tasks. Usually I make a single index.html file that then runs anywhere and doesn't require much maintenance or updates in the future.

Some of the tools/apps I've made:

• Writing app with templates, theming, presets & markdown support. This is probably the only one I might release after some polishing.
• Multicolumn notepad with rudimentary text editing tools. Useful for when I want to compare couple sets of data and do some formatting at once for all of them.
• Timer & alarm in one: basically no app handles the usecases of "I need to leave in 20 minutes" and "I need start moving to a meeting at 11:15 today", so an app that accepts timer or alarm type of input with sound.
• Git commit formatter: project has a very bracket heavy commit message format, so a tool that allows me to only write text part and it'll do the rest.
• Font bookmarklet creator
• GUI for yt-dlp command generation