Like a whole generation of software developers today, we first started writing software on the ZX Spectrum and QL computers. We studied science, computer science and mathematics at university.

We first encountered difference algorithms in the field of science, where they are used to find similarities (conserved regions) in protein and DNA sequences. Comparing Microsoft Excel spreadsheets provides fertile ground for applying these processes to a different area. DiffEngineX not only aligns spreadsheet rows, but also highlights character level differences between worksheet cells and provides version control for any embedded Visual Basic for Applications (VBA) macros.