SoftWare Bridge was customised and supplied with both WordStar for DOS versions 6 and 7. The program is no-longer sold, but copies may occasionally appear on on-line auctions such as eBay. If you look for this, try to get version 5 as this included Rich Text Format (RTF) conversion - alternatively, look for copies of WordStar for DOS version 7.0d as these included the RTF supporting version of SoftWare Bridge.