AndrOpenOffice is office document viewer for Android based on Apache OpenOffice (AOO) 3. 4. 1 source code. AOO is very large office software suite, but AndrOpenOffice is document viewer only and beta version now. AndrOpenOffice has 4 components: Writer Viewer (a word processor). Calc Viewer (spreadsheet). Impress Viewer (presentation graphics). Draw Viewer (drawing).