We use Jira as an issue tracking and time tracking system for our company. Moreover, most of our customers use Jira, so all of our employees have experience with it.
We use cloud services for clouding test to save screenshots and videos with testing games issue reports if needed, and also store test documents, share design projects, checklists, test plans, etc. in cloud services like Google Drive, Google Photos, OneDrive, Dropbox, iCloud.
We have to use VPN to access client environments or to perform web projects and mobile project localization tests from all over the world. We often use OpenVPN, TunnelBear, and HMA as VPN clients!
We use FTP servers to store large amounts of data such as application suites, design files, and site structures. In this case, our client gives us access to their FTP server to access the necessary information. Most of the time we use FileZilla as the FTP.
We use many types of testing tools depending on the type of work.