HTTPS Everywhere
Smart HTTPS
SSL Enforcer
HTTPZ
The Tor Browser
HTTPS Only
HTTPS Always
Tor Browser
Fiddler
Charles Proxy
Proxyman.io
Postman
Horangi
PracticeProtect
Intruder
HTTP Toolkit
Smart HTTPS - Automatically changes HTTP addresses to the secure HTTPS, and if loading encounters error, reverts...
Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy
SSL Enforcer - SSL Enforcer - Force SSL/TLS encryption for any browser or app. Block all unsecure connections.
Proxyman.io - Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.
HTTPZ - HTTPZ is meant to be unobtrusive and lightweight.
Postman - The Collaboration Platform for API Development