Here is some software which I use that started out free and later went commercial. Note: Final free versions listed – links may be dodgy, take care.
IcoFX 1.6.4 – Great icon editor. Still useful.
IsoBuster 0.99.5 – I actually have Isobuster 0.99.9 (the final free version), which works on Win7x64. let me know if you want it. While researching I also came across this link which has some interesting file listings, but unfortunately no downloads seem to be archived .
CamStudio 2.0 Unfortunately this has not survived the test of time and the features & quality are pretty poor compared to newer apps.