
OmniGraffle
LucidChart
draw.io
yEd
Sketch
Gliffy
Adobe Photoshop
Dia
HTTP Debugger
Surge for Mac
Charles Proxy
Weer
James
HTTP Headers
HTTP Toolkit
mitmproxy
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!
LucidChart - LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.
Surge for Mac - Advanced Web Debugging Proxy for Mac & iOS
draw.io - Online diagramming application
Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy
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.
Weer - A HTTP protocol debugger with Chrome DevTools frontend interface