Several months after release, the official Torchlight 2 GUTS editor has been released with full Steam Workshop support as well as new pets (including a headcrab and panda model).
http://steamcommunity.com/workshop/browse?appid=200710
However there appears to be a hard limit to the number of mods you can have on at any one time (ten), you can't access your vanilla save files with any mods active and apparently you can't play online with others unless they have the same active mods as you.
It's good that Runic are actively assisting the mod community but the caveats are a little off putting for me.
http://steamcommunity.com/workshop/browse?appid=200710
However there appears to be a hard limit to the number of mods you can have on at any one time (ten), you can't access your vanilla save files with any mods active and apparently you can't play online with others unless they have the same active mods as you.
It's good that Runic are actively assisting the mod community but the caveats are a little off putting for me.