SculptGL is a small sculpting application powered by JavaScript and webGL. Developed by Stéphane GINIER
License: Free
Apps available for Online
ZBrush is a digital sculpting tool that combines 3D/2.5D modeling, texturing and painting. Developed by Pixologic
License: Commercial
Apps available for Mac OS X Windows
SculptGL is a free, lightweight sculpting tool suitable for beginners and casual users, whereas ZBrush is a comprehensive and professional-grade software with advanced features for serious artists and studios.