simscommunityproject: A project that all Sims 2 fans are welcome to participate in. Build a house, make a Sim. Check out the showcase!
Aarroneous' Sim Manipulator - A supported mod much like the Insimenator.
Simwardrobe aka Paladin's Place - Home of the Sims2 Hack Conflict Detection Utility
Nixed Sims featuring the awesome Sim Bouncer!
Cherryblossom Sims Forum
Sims2Graveyard exists "to help people out by providing a place to put files from dead sites and from creators whose work has disappeared so the community can continue to enjoy them." Help them out by donating a little something something.
Garden of Shadows - Alternative, Grunge and Period Content