http://www.mytutorialcafe.com/Microcontroller%20Atmel%20ISP%20Software.htm
http://www.mytutorialcafe.com/
http://www.best-microcontroller-projects.com/pic-programmer-circuit.html
http://robolabz.multiply.com/journal/item/29
http://www.kmitl.ac.th/~kswichit/ISP-Pgm3v0/ISP-Pgm3v0.html
http://www.ikalogic.com/isp.php
http://www.embeddedcraft.org/ispprogrammer.html
http://www.dsaprojects.110mb.com/electronics/8031-ah/at89s_min_sys.html
http://www.dsaprojects.110mb.com/electronics/8031-ah/e8031-ah.html
http://www.8051projects.net/forum-t12657.html
http://electrosofts.com/links/port_programming.html
http://chaokhun.kmitl.ac.th/~kswichit/easy2puiu/easyp52.htm
http://www.kmitl.ac.th/~kswichit/cheapcable/index.html
http://dybkowski.net/pages/en/electronic-projects/software/2-isp (este parece ser legal)
http://www.lancos.com/prog.html
http://www.beyondlogic.org/porttalk/porttalk.htm
http://m955.com/wp/archives/142
http://chaokhun.kmitl.ac.th/~kswichit/
http://www.lammertbies.nl/comm/cable/RS-232.html (comunicação RS232)