Antida is data synchronization and backup software that works on any network that has Internet access. It allows automated backup to USB or any storage device. It can send files to any Web-enabled phone. Only a browser and Internet connection are required, with Antida on the other side of the data transfer. It can communicate with devices behind routers and firewalls on WANs.
Bluelog is a Bluetooth site survey tool, designed to tell you how many discoverable devices there are in an area as quickly as possible. Bluelog differs from most Bluetooth scanners in that it prioritizes speed of reporting over anything else (i.e. it doesn't spend time trying to pull detailed data from a device) and doesn't require any user intervention to function. As the name implies, its primary function is to log discovered devices to file rather than to be used interactively. Bluelog could run on a system unattended for long periods of time to collect data. In addition to basic scanning, Bluelog also has a unique feature called "Bluelog Live", which puts results in a constantly updating Web page which you can serve with your HTTP daemon of choice.
Ashd is an HTTP server that follows standard Unix philosophy for modularity. Instead of being a monolithic program with loadable modules, as most other HTTP servers seem to be, Ashd is simply a collection of much simpler programs, passing HTTP requests to each other using a simple protocol. The model also allows such handler programs to persist properly, so that, for example, session data can be kept in memory, connections to back-end services can be kept open, and so on.
linux_ics is designed to make the process of sharing an Internet connection from a Linux computer easier for the average user. It handles configuring the interfaces, setting up NAT, and optionally running a DHCP server. In addition to Ethernet, linux_ics can also share an Internet connection over a WiFi interface in either ad-hoc or master mode.