Is there a free VPN service that works on Ubuntu? [closed]

I use Hotspot Shield (Free VPN) on the Windows. Do anyone know of a similar tool or service for Ubuntu?

that:

• Would not require me to have any server.
• would hide my IP.
• Would effectively tunnel all my connections in Ubuntu.
• have free plans

please explain pros and cons of your suggestions.

Solution 1:

VPN One Click is free (for one year) for Linux, Windows and Android.

Solution 2:

Free VPN Connect for Linux
I just created script for automatic instant free OpenVPN connections to multiple free VPN services.

You can download it on GitHub.

Supported free services:
www.vpnbook.com
www.freevpn.me
www.vpnkeys.com

Script is automatic and takes all advertising money from service providers for not visiting their web pages, so plese donate.

EDIT: You must be administrator to establish connection to VPN