Interestingly, I'd just seen a self-hosted, open-source JIRA (and Trello/Asana/etc.) alternative on Hacker News today: Focalboard. Looks pretty similar to JIRA if you're looking for a tool that's similar but free.
Another tool mentioned in that discussion was OpenProject for a bit of a more Todoist-style project management that could also work, though less similar to JIRA.
I'd used Tagia for a bit for a while back as a free, self-hosted project management tool. That one's far more different from JIRA but could be worth checking as well.
I've tried both Jira and Trello for project management. Then we switch to ZenTao. It fits what you want as being open source, on-premise, and jira like. Here is a list of 6 Best Free and Open Source Project Management Software (FOSS) in 2021.
My company is looking to switch platforms for our customer-facing documentation of our SDK. We currently use a mix of Confluence and isolated PDF's, but we are looking for something a little more p...
Curious if anyone has any new, favorite survey tools? Are you mainly using Survey Monkey, Typeform and Google Forms?
I recently added 1Password and Backblaze to my "home stack" to coordinate thing within my family. In addition, I use: 1Password - So my wife and I can share passwords Backblaze - Automated ackups...