Cross Platform Clinet app for a vpn

Project Description:

We want a cross platform client app for VPN.

The app must have the subsequent options below:

1. Must be an openvpn, L2TP and PPTP client application in one.

2. Must be able to manual and auto update.

3. Must be written for cross platform conformity.

4. Must have proper comments and documentation.

The app must have the subsequent characteristics.

1. The app must have a username / password field

2. Must have tabs for Openvpn and L2TP/ PPTP connection.

3. Must have option to choose the server to user

Skills required are C Programming, Software Architecture, PHP