BlackBeltPrivacy Tor+WASTE+VoIP is a collection of different privacy tools and includes MicroSip which enables *FREE* PC to PC calling with no account sign-up and no middleman server; WASTE which enables chat, file transfer and support; and Tor which enables anonymous browsing, aiding proxy and censorship avoidance. It is a free and open source Tion application that's well-designed.
Here are some screenshots to illustrate the features and user interface of this application:
Psiphon
v2rayN
ZenMate
Tor Browser
TunnelBear