This extension allows you to place templatefields, relations and taxonomy under custom tabs in the editcontent interface. Simply add group: yourgroupname to any taxonomy, relation or templatefield.
Now with geolocation! And named arguments! And JS callbacks! And records! And maps! And more! Supports customizable markers, multiple markers on one map and only loads the Google maps API on pages that use the map. Please see the github readme for more info.
Not maintained, will not be updated. If you feel like taking it over, open an issue and I'll transfer the repo. A plugin to integrate foxycart with bolt. See http://www.foxycart.com/ and the github readme for more info.