An XLS file is the native spreadsheet file type for versions of Microsoft Excel prior to Excel 2007. A QIF file is a Quicken Interchange Format file. The QIF file format was originally established by ...

DBF (database) files, wildly popular with business PC owners in the 80s and 90s, have since been replaced by newer technologies. Luckily, if your company is still using DBFs, a few different software ...