[iheartmemcache]

Atlassian is cheap (like a dollar a user per year, per product) for startups (up to 10 engineers IIRC - so lets say if you have less than 20-25 employees) and basically does everything from high level PPM all the way down to code-reviews. I've played with all of the major (and maybe half of the minor) solutions and Atlassian wins hands down. (They bought Hipchat, so you have your Slack integration -- Confluence as your wiki -- Bitbucket is now feature parity with Github -- and its all on premise. Watch this[1] 3 minute promo to see the tooling. And if its extendable/integrates into basically everything (see this: https://youtu.be/YdHtj0ymMqY?t=22. Oh yeah it has all those Kanban Trello features too). It was a RAM hog back in the day (mid 2000s) but thats a non-issue now. And re: licensing fees, if you make it past their startup-pricing, the software has delivered enough value to you that spending a few thousand an engineer a year is literally the cost of one day of labor for a FTE.

There are other alternatives with pretty decent ecosystems if you don't want to pay the $10 dollars to get 10 seats for Atlassian (which again, I think youd be crazy not to at least demo it). RE: OSS - Even with a "crappy" 8 year old Redmine install, you're given a git master remote to push to, a document share, bug tracking, and a whole lot more out of the box. GitLab also has a really integrated free set of tools which is a huge huge RAM hog in itself, but it's free and has eye candy so you can probably get management to sign off.

https://youtu.be/8KPoZ5g8NqU