Geometer Plus Freeware Downloads
FBReader
0.12.10 freeware downloadFBReader: Versatile eBook reader for Windows with extensive format support.
FBReader for Android
3.0.5 freeware downloadView e-books of various formats and download/buy books from network libraries
FBReader for Linux
0.99.4 freeware downloadView e-books of various formats and download/buy books from network libraries/st