Chapter 6 – Test Tools
Fiddler – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
A web debugging proxy tool from Progress for inspecting and modifying HTTP(S) traffic.
In simple words
A classic Windows HTTP debugging proxy from Progress (formerly Telerik).
Exam tip
Fiddler is common in Windows-centric QA environments.
Related terms
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