>Anybody ever heard the term "boutique" applied to a software company? As in "boutique software company"?

I think it would rather be: software boutique



Boutique means shop or a small business offering specialized products and services ( cfr una tienda)


So, I can say

- your software boutique
- your software shop
- your software company

The use of boutique or shop may be a bit denigrating depending on the context