AddressBook X LDAP provides a shared addressbook on your local network, without the burden of subscriptions. It is an iSync enabled application which transfers contacts from the AddressBook to a central LDAP directory. It also provides the ability to browse and search the directory. Multiple schema mappings are available and can be customized and extended to address individual needs. Currently, ABxLDAP Person (an extension to InetOrgPerson) is fully supported, but the Mozilla Schema and the basic InetOrgPerson are in development. Support for Active Directory is included as well.
Vi Input Manager patches the Cocoa Text System to add a Vi-like command mode. After entering command mode, ordinary Vi commands can be typed, and the text field will be updated accordingly. Essentially, this adds Vi command functionality (albeit a small subset) to any (and all) text editors that use the Cocoa Text system (Safari, TeXShop, XCode, etc.). Note, however, this does not work for other programs that do not use the Cocoa system. All the text windows will initialize in "input" mode (standard Cocoa Text input). You invoke the Vi command window (exit the input mode) by hitting "`", then enter your favorite Vi commands. You go back to "input" mode by typing "i".
AlmostVPN is an SSH tunnel manager with a twist. It is packaged as a Preference Panel, so you do not have to use yet another application to configure your tunnels. Instead, it uses creative network configuration techniques to provide almost VPN-like access to remote services, so you can keep using real IP addresses and port numbers while accessing service on the other side of your tunnels. It provides a simple way to mount remote volumes, use remote printers and faxes, access iTunes, iPhoto, and almost any other Bonjour-based application, transfer and execute files, and more.
Scalable OGo (SOGo in short) is a groupware server built around the SOPE application server. Unlike OGo, it is focused on scalability instead of depth in functionality. The Web interface uses human-readable URLs and can be accessed according to REST Web service ideas. Notably, it requires no server side session at all. The server stores all internal data in the iCalendar format, and therefore has no data model inconsistencies with native clients. It easily connects using GroupDAV connectors.