Team Foundation Server and Usersnap Track can be easily connected.
Usersnap Track can be connected to the on-demand TFS version on visualstudio.com.
Here's how it works:
Log into your Team Foundation Server account and go to the Settings tab of your TFS account.
Under 'Application Connections', allow Third-party application access via Oath.
Go to your Usersnap Track project’s 3rd Party Integration tab and select Visual Studio from the grid.
Enter the hostname of your TFS account. It will look something like this: https://yourcompany.visualstudio.com
Click on 'Connect now!' and sign into your TFS account to grant access to Usersnap Track.
After you have successfully authorized Usersnap Track to connect to your TFS account, you can now choose your desired TFS project.
Choose the work item type as well as other fields available. The settings will apply to every issue item sent to TFS.
Click 'Save' and start having your Usersnap screenshots delivered directly to your TFS Project.