[oneplane]

Pretty much just JIRA and communication/storage apps on the side (like Slack and Google Docs). A lot of people seem to hate JIRA, but as long as you keep it simple and only keep some border requirements rigid, it's pretty sweet to work with.

Other setups I've worked with are Trello-style (but not actual Trello) kanban boards, be it a physical board or a board implemented in something else. In some projects it worked very well with GitLab and GitHub integrated project tools. As limited as they are, they are a great minimal way to workflow your stuff. Anything more complex than that is often in the wrong place and should most likely be managed at a different (non-engineering) level. Perhaps that is why JIRA works for us as well on most projects; we tend to not mix engineering and non-engineering stuff as they often have different needs where even small differences make for a bad combination in the same tool.