Arduino core for the tinyAVR 0/1/2-series - Ones's digit 2,4,5,7 (pincount, 8,14,20,24), tens digit 0, 1, or 2 (featureset), preceded by flash in kb. Library maintainers: porting help available!
Collection of AVR Programmers and Accessories
Simple ISP Flash Tools for various Microcontrollers
2.5kV Isolator for the USB Power Rail
Rotary Encoder with I²C Interface
Change the Pitch of your Voice
Arduino compatible C library to support the PTC in the AtTiny 1-Series