Data Interchange Format (.dif)
The Data Interchange Format (DIF) file extension is a standardized format used primarily for importing and exporting spreadsheet data between different software applications. Originating in the 1980s, DIF was developed by Software Arts for their pioneering spreadsheet program, VisiCalc. Despite its age, DIF remains relevant due to its simplicity and ease of implementation, facilitating interoperability among various data processing tools. Its structured, plain text nature makes it particularly suitable for transferring tabular data while maintaining data integrity across different platforms.