For hosting common files it's ok. Also it is on Android too do, great to transfer files between your Windows and your phone. But if you want better security you have to subscribe a monthly offer.
CloudBees CI - Accelerate cloud-native application development with Jenkins X by CloudBees. Unleash the full power of the Kubernetes Ecosystem!
Dropbox - Online Sync and File Sharing
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
Google Drive - Access and sync your files anywhere
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Mega - Secure File Storage and collaboration