As the CEO of a custom software development company, I’ve seen how trust is the basis of any successful collaboration, influencing everything from initial communication to final delivery.

A major software supply-chain company, which counts US and UK grocery stores and Fortune 500 firms as clients, said it was hit by a ransomware attack this weekend.

These are the nine biggest software companies based on revenue (TTM) as of January 2025. Microsoft leads the pack but some data can change by the hour.