What is a good alternative to Box?

I'm looking for a secure and reliable alternative to Box for managing my files and collaborating with my team. Do you have any suggestions for a cloud-based storage and collaboration platform that offers similar features to Box, but perhaps with more flexibility or cost-effectiveness? I'm particularly interested in platforms that offer robust security measures, seamless file sharing capabilities, and easy integration with other tools we use daily. Can you recommend any good alternatives to Box that meet these criteria?