Find and display Bonjour sites on your local Wi-Fi network.
Many devices, such as printers, in a Wi-Fi network publish sites to allow anyone on that network to control them. Hola Browser can find and display these devices, providing visability of your network and usability of your devices in a single app.
Always have your JMRI rosters with you.
Do you run your trains at a model railroad show or a layout you are visiting? Have you found that, even if they use JMRI for throttles, you aren't sure what address your locomotives have?
Roster Decoder keeps a copy of your JMRI rosters stored in Dropbox on your iPhone, iPad, or iPod. You can always have a complete roster with you for reference.