Address Book Server allows you to share your contacts and calendar events with others connected to your network or over the Internet. Each participant synchronizes their contacts with the server hosted on your own system. Address Book Server supports the full Address Book and iCal schema. The server also provides a friendly Web interface and an iPhone client which let you access your contact details remotely.
Linux File Renamer is a utility that provides a quick and easy way to rename multiple files. It accepts files and folders dropped onto its window, and can traverse into subdirectories. The new filename can be constructed by adding a text string to the beginning or end of the name, or by doing a search and replace. A preview option is provided.