Proxoid is a Proxy Server on Android. It allow users of not rooted phones to use their phone's internet access from a computer.
Important:
There is an option to activate on your phone.
Be sure to follow instructions on Installation page
AziLink is an application that allows USB tethering for Android-based phones, without requiring root access. It works by using a Java-based NAT that communicates with OpenVPN on the host computer. It has been tested on MacOS, Windows, and Linux. The connection will be forwarded over the phone's active network service, which can be either WiFi or 3G/EDGE
Network Widget - Simple widget to know active network information and to switch WiFi on/off.
Is your device on WiFi or data plan mode?
What is current IP address?
Click on network name to show preferences.
Click on icon to toggle ON/OFF WiFi.
Note: this is a widget, you HAVE to add it to your home screen
Droid Wall - Android Firewall is a front-end application for the powerful iptables Linux firewall. It allows you to restrict which applications are permitted to access your data networks.
This is the perfect solution if you don't have an unlimited data plan, or just wants to see your battery lasting longer
PaderSyncSSH is a powerful SSH client for mobile devices. You can use it to access your SSH servers at home or at work with your mobile device.
Terminal Emulation
With the integrated VT100 terminal emulator you can connect multiple terminal windows, execute programs and manage the remote system