Getting Started
1. If you don’t have the Mono framework installed on your MAC, please, download it from
http://www.mono-project.com/download/#download-mac and install it. If you already have it
installed, please, update it to latest.
2. If you just installed Mono, please open Terminal and type in
/Library/Frameworks/Mono.framework/Versions/<Mono Version>/bin/mozroots --import --
sync (The Mono framework has its own trusted root certificates store. Currently (at mono version
4.2.4) this store remains empty after installing Mono on Mac OS X. Fiddler uses the certificates
in this store to validate the certificates of the websites visited. So you need to populate this store
with a set of commonly trusted root authorities to avoid getting constant certificate warnings by
Fiddler. The mozroots tool imports trusted authorities from the Mozilla LXR. )
3. Extract fiddler-mac.zip to a folder you have write access to. It is recommended that the full path
to Fiddler install folder does not contain any Windows path illegal characters. (At present it is
possible that some Fiddler functionality, e.g. various file exports or Fiddler Script won’t handle
such paths.)
4. Open Terminal and navigate to the folder from 3.
5. Type mono Fiddler.exe in Terminal.
To further understand the benefits and limitations of Fiddler for MAC please visit -
http://www.telerik.com/blogs/Latest-Fiddler-Available-for-Mac-OS-X
