Podio not only takes the best of all the commonly used services like basecamp, Jira, sharepoint, and aHa!.
Podio lets the users to define how they want to get work done.
The mobile app is light years ahead of all the rest listed above.
Their community is always pushing for new enhancements and Citrix Podio doesnt hesitate to answer customer demands.
Great service, support, and a great app :).
Rjdeliman about Podio, v5.2.0