I'm an API guy who uses Python and Hy and I'm getting started with some front-end programming on my weekends to have some hobby projects with a public face. It annoys me that every website template now expects you to install via npm. Bulma is all-out with that.

If you dig down, it's apparently because the DSL Sass is used to generate CSS. But there are Sass compilers in C and Python and probably in Prolog at this juncture.

Bulma looks fairly similar to Bootstrap v4 as far as visual output goes.

Any major reasons to use one or the other?

We looked into both when writing an open-source admin interface for NestJS. We went for bootstrap because:

- Nobody likes bootstrap, but everybody knows bootstrap (good for an open-source lib) - Better browser compatibility - Better accessibility - Plenty of UI widgets built on top of bootstrap (we don't use them, but people using the lib could) - About as big as each other

No solid reasons honestly, other than personal preference. Bulma just looks better out of the box to me.

Seconded. Bulma is the tool of choice for 99% of my projects. I have all the CSS classes almost memorized.