When comparing Fiddler vs Wireshark, the Slant community recommends Wireshark for most people. In the question“What are the best network protocol analysers?” Wireshark is ranked 1st while Fiddler is ranked 8th. The most important reason people chose Wireshark is:
The included WinPcap does not allow Loopback Packet Capture, but [Npcap](https://nmap.org/npcap/) does. This way it is easy to monitor SQL commands sent to a local database e.g. from PostgreSQL or NHibernate.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Allows performing security audits
Pro Can manipulate web sessions
Pro Records HTTP/HTTPS traffic
Pro Helpful performance testing tools
Fiddler helps find performance bottlenecks with filters.
Pro Functionality can be extended with add-ons
Add-ons can be written in any .NET language.
Pro Npcap
The included WinPcap does not allow Loopback Packet Capture, but Npcap does.
This way it is easy to monitor SQL commands sent to a local database e.g. from PostgreSQL or NHibernate.
Cons
Con Steep learning curve
Con USB monitoring
The experimental USB monitoring can lock up your PC.