For $10, this app runs on Windows or Mac and lets iPhones or iPads on the network print to attached printers using AirPrint function on the device, to PDF that automatically opens on the computer, or saved to DropBox. Free 7-day trial.
"Simple Network Tester's agents run on PCs located at key locations. You command them to send live test data through your network when you need it. Run tests from your office using Simple Network Tester's user-friendly web pages. Monitor the health of your network just by clicking a few links." Tests jitter to simulate VoIP calls and has a free command-line version to download. $29 per company after 15-day trial.