Wrike has sync with GitHub and Jira, but the best feature of GitHub's issue tracker (probably the only good feature) is you can automatically reference issues in commits and pull-requests.
I am not a sysadmin but I know lots of tools allow integration in this way. Does Wrike? If so how can I do this if we wanted to move all our issue-tracking to Wrike but still automatically see commits and PR links added to the Wrike tasks? It's a different thing to using sync/Unito.