Overlook's Fing is a handy cross-platform network-discovery tool that quickly gives you a complete picture of the devices and services running on your network. Fing also includes basic ping tool that tests the reachability of a host in an IP network by measuring the time it takes for a packet to reach the host and return.
You can run multiple scans or pings in quick succession and output the results in a variety of formats -- including plain text, HTML tables and CSV logs -- for viewing in the app's console window, a Web browser or a third-party application.
Price: The basic version is free; NeoRouter Professional starts at $99 for eight licenses (a 30-day free trial is available).
NeoRouter is a cross-platform VPN product that allows you to remotely access Windows, Mac and Linux computers or view their status. NeoRouter for Android brings that functionality to your phone. Small businesses in particular will appreciate this app, which allows system administrators to connect to all of their computers from any location, integrating remote access, file sharing, VPN and user management.
IT pros at larger businesses may also find this app useful, because it can be used to remotely access printers, manage and maintain unattended servers and provide remote support to users. NeoRouter for Android works very well with ConnectBot and other Remote Desktop Protocol and VNC clients.
NeoRouter for Android comes in a free version and a professional version, both of which require that users have a NeoRouter Server set up with remote computers added. NeoRouter Professional is designed specifically for commercial use and includes a built-in firewall, user access control, spoke-and-hub networking and subnets -- plus one year of technical support.
From: June Fabrics Technology
Price: Free for a limited version that blocks secure Web sites; $23.95 for a full version (though it's currently on sale for $15.95)
Have you ever been unable to find a reliable Wi-Fi signal when you were working in the field? PdaNet can help. It lets you tether your laptop to your smartphone so you can use the phone's 3G network to connect to the Internet -- without rooting your phone or paying your carrier a monthly tethering fee. With it, you can access email, Web apps and anything else you need to do your job, just as you would if your laptop were connected directly to a Wi-Fi access point.
The app supports both USB tethering and Bluetooth dial-up networking (DUN) and can handle download speeds of up to 35Mbit/sec. over USB. However, you will, of course, be limited by the speed of the 3G network you're on.