HostsMan - HostsMan is a freeware hosts file manager and editor. Built-in hosts file updater
Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy
Gas Mask - Gas Mask is simple hosts file manager for Mac OS X.
Wireshark - Wireshark is a network protocol analyzer for Unix and Windows. It lets you capture and interactively browse the traffic running on a computer network.
BeeThink IP Blocker - IP Blocker program free downloads. Block country IP addresses. Support Windows 10, 8, 7, Windows server 2016, 2012, 2008.
Postman - The Collaboration Platform for API Development