xkcd-style ip adress mapping!

DiffProbe Shaper Module: Detecting ISP Traffic Rate-Limiting

port-knocking daemon implemented with python

HTML5 (plugin-free) web-based terminal emulator and SSH client

erlaubt auch WEP, etc.

Secure shell (SSH) client for the Android platform

Guacamole is an HTML5 web application that provides access to multiple remote desktops through a web browser; no plugins or client software are needed. VNC is supported, with other protocols under development.

still in development:
https://twitter.com/#!/Nolobe/status/126928776369156096

Easy access to files over SSH/SFTP with Windows.
With Swish you can access the files and folders you have stored on another computer securely via SFTP. Swish is a Windows Explorer extension so managing your remote files works just like it does for local ones.

Vine Server(OSXvnc) is a robust, full-featured VNC server for MacOS X. It allows VNC clients to remotely view or control the machine.
Works more reliable than built-in screen sharing when using client operating systems other than OSX (ex. Android, Windows).

CoRD is a Mac OS X remote desktop client for Microsoft Windows computers using the RDP protocol. It's easy to use, fast, and free for anyone to use or modify.

how to enable printing on CUPS-shared printers
also: http://www.kindawannadothat.com/2009/02/connect-mac-osx-to-a-cups-printer/

For as little as $0.25, you can set up web sites at NearlyFreeSpeech.NET, the original home of only pay for what you use hosting.

The program runs in background and periodically performs transmission tests with some test servers and with other instances of the program itself. These transmission tests probe the Internet using various application level protocols. The program saves tests results locally and uploads them on the project servers. The collected dataset contains samples from various Providers and allows to monitor network neutrality.

Tahoe-LAFS is a Free and Open cloud storage system. It distributes your data across multiple servers. Even if some of the servers fail or are taken over by an attacker, the entire filesystem continues to function correctly, including preservation of your privacy and security.

FTPbox is an open-source application that allows you to synchronize all your files to your remote host, via FTP/SFTP.