geowrite2rtf is a tool that converts Commodore 64/128 GEOS GeoWrite documents into RTF format. Most formatting will be preserved, but some formatting and graphics will be discarded.
The C64/C128 GEOS GeoWrite file format is a rich text format, which is, like most GEOS file formats, not a sequential file, but a VLIR file, a collection of up to 127 sequential streams. For a VLIR file to exist outside of a C64 disk image (D64, D71, D81 etc.), it has to be in serialized .CVT format. You can use tools like c1541 or DirMaster to extract them from disk images.
You can find it at github.com/mist64/geowrite2rtf.