adx is a minimalistic but massively Web-enabled address book that runs completely in your Web browser. It's OS-independent and supports comprehensive details for each contact entry, including user identifiers and profiles for Skype, Twitter, Flickr, Delicious, Facebook, LinkedIn, studiVZ, instant messengers, etc. It supports the hCard and XFN microformats.
Moyobase is a Web application designed to manage all your data and information in one place. Its powerful customizable features allow you to structure data and quickly access important information. Colleagues and partners can add notes on a customer page so that the information is instantly shared among everyone involved. Moyobase keeps track of things to do and manages your tasks with due dates, priorities, and notes. You can also assign tasks to others. Moyobase can plot charts with any piece of information stored in your database.