AC3D's powerful modeling and texturing tools are ideal for Second Life's new Mesh support. Simply export your model as Collada (.dae file) and upload your model into Second Life. See an illustrated tutorial
Sculpted prim maker
AC3D's Sculpted Prim exporter is one of the best ways to create smooth sculpties for Second Life.
Using AC3D's popular and easy to use interface, you can create objects for Second Life quickly and without many of the restrictions that other 3D modelers enforce.