What Software Tools Help Property Managers Stay Organized

What software tools do property managers find most useful for keeping rental operations organized?

I’m interested in tools that can help with tasks such as tracking maintenance requests, managing tenant communication, organizing rental listings, collecting rent, and keeping important documents in one place.

For smaller property management businesses, is it better to use one all-in-one platform or several specialized tools? I’d also be interested in hearing which cloud-based solutions have worked well for teams that manage multiple properties.