Fiddler Everywhere is available for Windows, MacOS, and Linux. The application utilizes built-in .NET Core (cross-platform version .NET framework). The only mandatory requirement for running Fiddler Everywhere is available disk space .
Windows, MacOS, or Linux x64 Operating System with approximately 290-300MB of free disk space (depending on the operating system).
(Optional) Account with administrative rights.
By default, Fiddler Everywhere can be installed and used without administrative rights if you need to capture non-secure HTTP traffic. However, for capturing secure traffic (HTTPS), the user will need administrative rights to install and trust a root certificate For more information, check the HTTPS) article.