Recommend me a tool: drop your stack and what's missing

Trying to make this board genuinely useful for recommendations, so here's a simple format that gets you better answers:

1. What you're trying to do — the actual job, not just the category.
2. Current stack — what you already use, so suggestions fit.
3. Constraints — budget, team size, self-hosted vs cloud, compliance needs.
4. What's missing — the specific gap you're trying to fill.

The more specific the post, the better the recommendations. What are you trying to solve right now?