BitBucket is owned by Atlassian now. Stash is rebranded as BitBucket and while it has its issues, its integration with Confluence and Jira is at least as good as any of the other Atlassian integrations.

So if you're hosting your own tools, BB still gets paid and you don't have to switch vendors.

(my personal feelings about Atlassian rank somewhere between dislike and dread, but the BitBucket integration is one the least offensive bits).