Fiddler for Linux Beta is now available for download. Try out our free web debugging proxy on Linux today and let us know what you think.
After introducing Fiddler for OS X a few months ago, we focused on delivering the same for Linux. We are strong believers in the benefits of running Fiddler on the same system that generates/accepts the traffic being watched.
Once you download the new Fiddler for Linux file, follow these steps to get up and running with it:
We decreased the time to release by basing the Jan 2017 Fiddler Release for Linux on Mono. However, this approach introduced some limitations, which we'll cover in the next section.
Fiddler is a proxy. So in order to see traffic in Fiddler the application generating that traffic should be set up to use Fiddler as a proxy. Fiddler tries to help you with that by changing the proxy settings on startup and reversing them back to original on quit. However, the numerous Linux distributions offer a great variety of proxy settings. Fiddler cannot support all possibilities, so we chose to support gsettings and .bashrc. If the app you are trying to debug doesn’t respect the proxy settings at these two locations, then you will have to manually point it to Fiddler. Under Linux Fiddler still runs under the default localhost:8888 address.
This is a hard limitation introduced by the current state of TLS implementation in the Mono framework. So Fiddler for Linux cannot use these protocols at present.
Fiddler for Linux cannot display these at present. This is a work in progress.
The initial version of Fiddler for Linux can be updated only manually.
Tsviatko is the Lead Developer for JustDecompile and Fiddler.