What is the SaaS stack used in your software development process?

My current company is using Basecamp. I don't like it; it feels very disorganized, with work scattered across many message boards, chats, kanban boards, etc. Instead of Agile, it uses Shape Up (https://basecamp.com/shapeup), which has a "no backlog" philosophy (https://basecamp.com/shapeup/2.1-chapter-07#no-backlogs). In this system, I feel like most customer-originated work simply gets ignored and forgotten =/ The idea is that important things will naturally get mentioned again and again and eventually bubble up, but the reality I see is that customers just get frustrated/disappointed.

In the past, most of companies I worked for used Jira. When I was the admin for it, I was able to customize it and make it work without over-complexity (i.e. dumbing down a lot of its built-in powers), but many companies don't go through that effort and end up with a super clunky implementation. And slow too, if they self-host.

I much prefer Linear (https://linear.app/) or Airtable for simpler workflows.

For collaboration (on what, exactly?), I'd prefer Figma for actual UIs (even if they're just wireframes or sketches) or Figjam for notes/ideas. Miro is way too slow and clunky.

I've heard good things about Clickup and Notion, but never used them professionally.

Clickup