Spotflux is a modern program, also available as application for smartphones, that enhance your privacy and security while using internet.
Is a VPN tool that is changing your real IP address so you cannot be tracked by hackers, also is encrypting information sent when your computer communicates with different sites from internet (your important data such as username, passwords etc. will not be stolen by others). Also is compressing internet traffic and reduces the bandwidth consumption.
Interface is clean, you can connect or disconnect it anytime without loosing internet connectivity for long time. It can be a good substitute for Hotspot Shield.
The program is free, but for more advanced features you need to go premium for a small monthly price. It is easy to use and has a very nice design.