https://code.google.com/p/adb-fastboot-install/
Package containing the adb and fastboot binaries and a handful of simple shell scripts to drop them into the appropriate places on mac / linux. Nice.
http://www.ipkall.com/
Offers free incoming Washington state SIP based numbers. Apparently their revenue model is the ~1c termination fees they make. No customer service is provided. Interesting.
http://ftp.mozilla.org/pub/mozilla.org/mobile/releases/
Download apks of mobile firefox directly and skip the Google market bs. Very useful, was a pain in the ass finding this.
http://shop.delorme.com/OA_HTML/DELibeCCtpSctDspRte.jsp?section=10741&beginIndex=&forge_prod=56bImlpDun7piC7ymi3IfRHE:S&forge_prod_pses=forge_prod%3D56bImlpDun7piC7ymi3IfRHE%253AS%7E
GPS sat nav handheld devices with built-in spot messenger functionality. Epic! Starts from $550. Ideal for the true outdoor adventurist. Twitter just went global.
http://code.google.com/p/android-notifier/
Connect an android phone to a computer so that incoming notifications are sent to the computer. Very nifty, ultra nerdtastic, probably not really necessary!
http://wiki.cyanogenmod.com/index.php?title=ADB#Linux
I installed the udev rules from this page on Ubuntu to get the HTC Google Android Nexus One properly recognised by Ubuntu.
http://www.ether.com/
Sell time on the phone. Ether handle all the calling, billing, logistics part. Create an account, post a link, people pay and call.
http://www.openmoko.org/
OpenMoko the world's first integrated open source mobile communications platform.