HTTP Debugger
Surge for Mac
Charles Proxy
Weer
James
HTTP Headers
HTTP Toolkit
mitmproxy
ObservePoint
UMLGraph
Dia
yEd
draw.io
OmniGraffle
CollabNet
LucidChart
HTTP Debugger is a professional HTTP sniffer and analyzer for developers.
You can use HTTP Debugger to debug HTTP API calls to a back-end and between back-ends.
HTTP Debugger is very easy of use, with clean UI, and short ramp-up time.
It's not a proxy, and does not produce network issues!
ObservePointObservePoint is recommended for digital marketing professionals, web analysts, and data governance teams who need to ensure accurate data collection and compliance with data privacy standards. It is particularly beneficial for medium to large enterprises with complex digital infrastructures and high volumes of analytics data.
Surge for Mac - Advanced Web Debugging Proxy for Mac & iOS
UMLGraph - UMLGraph is a professional automated drawing tool that allows the designers the declarative specification and drawing of UML class and sequence diagram.
Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy
Dia - Dia is a GTK+ based diagram creation program for GNU/Linux, MacOS X, Unix, and Windows, and is released under the GPL license.
Weer - A HTTP protocol debugger with Chrome DevTools frontend interface
yEd - yEd is a free desktop application to quickly create, import, edit, and automatically arrange diagrams. It runs on Windows, Mac OS X, and Unix/Linux.