FreeWRL is an Open Source, cross platform VRML2 and X3D compliant browser, with script, SAI and EAI support. Platforms supported: Linux and other Unix-style platforms; Mac OS/X; Windows. Support for mobile platforms (iOS, Android, QNX) is under development.
Free open source PDF reader for smart phones using Windows Mobile 2003/2003SE, WM5 and WM6) This is a free PDF reader for smart phones using all the common Windows Mobile operating systems... Cab installer is also available for download for free.
This program views calibrated bitmap maps (moving maps) on PocketPC/WinCE platform. Additionaly it supports using GPS device to retrieve user position and show it (with other marks) in map - making it very handy for geocaching.