[hliyan]

I think what the industry is missing is some sort of interoperability standard/format for task management. I say this as someone who has been jumping from task tracker to task tracker since the early 2000's -- Trac, Jira, Redmine, Github Tasks, Trello, ClickUp, Linear, and several tools I developed myself. In each case, we rediscover/reinvent/redefine the same things: tasks, subtasks, summaries, descriptions, due dates, statuses, comments, milestones, dependencies etc. If there was some interoperability standard for task trackers, the tool churn wouldn't feel so tedious.

[rapnie]

Not exactly what you are after, but related. There is ForgeFed [0] as a standard for code forge federation. It is an extension of ActivityPub [1] social web protocol, and thus far includes all the basic elements to facilitate task management / kanban. The project is wholly volunteer-driven, and recently received NLnet support to mature the standard further. Recently the maintainers were asking for feedback to help improve the specs. Various forges such as Gitlab [2] and Forgejo [3] are adding support for ActivityPub and considering ForgeFed support too.

[0] https://forgefed.org/spec/

[1] https://www.w3.org/TR/activitypub/

[2] https://gitlab.com/groups/gitlab-org/-/epics/11247

[3] https://codeberg.org/forgejo-contrib/federation

[xet7]

Moving issues between some of those is possible:

https://github.com/git-bug/git-bug

Gitea has some one-time imports, but maybe not yet full mirroring of everything, I have not checked latest status.

https://about.gitea.com