Wired Tether - This application enables tethering (via USB) for "rooted" handsets running Android. A client (your laptop for example) can connect via usb and get access to the internet using the 3G, 2G mobile connection or the wifi connection which is established by the handset.
This program has been tested with Linux and Microsoft Windows clients
Network Discovery - Android network tool. Discover hosts and scan them in your WiFi network.
Legal notice
Please do not scan networks without the authorization of the owner, the best approach is to get permission first. It may be illegal in your country, so please act responsively
ZaTelnet Light is a Telnet client for Google Phone. It also emulates terminal VT100 (basically enough for working with Midnight Commander and others console programs).
A light protocol client, designed for network system administrators, end users and web designers, working with Unix/Linux/BSD systems
Telnet client-a simple telnet application for Android. After starting telnetd on your G1, naturally the next thing you want to do is to telnet into it. Android did not have a telnet application, so I quickly whipped up a raw telnet client