Project Source Code
http://hamradioprojects.com/authors/g0upl/+qrss-attiny/code

Using an Arduino to program another chip
http://arduino.cc/en/Tutorial/ArduinoISP

Arduino Tiny Core
http://code.google.com/p/arduino-tiny/

Tiny Tuner Clock Calibrator
http://code.google.com/p/arduino-tiny/downloads/list

MIT Hi-Lo Tech Lab ATtiny Core
http://hlt.media.mit.edu/?p=1695

Instructables ATtiny Programming Shield
http://www.instructables.com/id/8-Pin-Programming-Shield/

Adafruit Arduino ISP Shield
http://www.adafruit.com/products/462
But you will need to adapt it for the small size of the 8-pin PDIP:
http://www.instructables.com/id/Hacking-an-Arduino-ISP-Shield-for-AtTiny45-AtTin/

Sparkfun AVR-ISP Shield
http://www.sparkfun.com/products/11168

Author’s website, containing considerable QRSS-related content:
http://www.hanssummers.com/

QRSS transmitter kit:
http://www.hanssummers.com/qrsskit.html

Talks by the author
http://www.hanssummers.com/talks.html

WB3ANQ / VK6DI (now VK2DDI) microwatts
http://www.wb3anq.com/
http://www.users.on.net/~davroz/vk6di/

QRSS Knights mailing list
(announce operation to ensure receiving stations are looking for your transmission):
http://mail.cnts.be/mailman/listinfo/knightsqrss_cnts.be

Argo software (receive decoding):
http://www.sdradio.eu/weaksignals/argo/index.html

Spectran software (receive decoding):
http://www.sdradio.eu/weaksignals/spectran.html

Spectrogram software (receive decoding):
http://www.brothersoft.com/spectrogram–267027.html

Spectrum Lab software (receive decoding):
http://www.qsl.net/dl4yhf/spectra1.html

QRSS grabbers:
http://digilander.libero.it/i2ndt/grabber/grabber-compendium.htm