I like Redmine, it’s simple but yet powerful, one tool with almost all you need for managing project (Issue tracker, time-sheets, wiki, file-share tool, cool filtering and reporting tools)
Just Like It.
Here is the link to the free redmine hosting (you can still have your project private) the only limitation I found – you can’t create users on your own (i.e you don’t have Admin rights which of course correct for free public service). Of course you can’t install plugins, but even without that Redmine offer you a lot
Thank you guys for your service https://www.hostedredmine.com/
And thanks to Redmine creators, I wish I will contribute to Redmine too.