Version 6.2.1 is still available on the official server.
Download links are:
DVDPedia: https://bruji.com/dvdpedia/dvdpedia6.2.1.dmg
BookPedia: https://bruji.com/bookpedia/bookpedia6.2.1.dmg
CDPedia: https://bruji.com/cdpedia/cdpedia6.2.1.dmg
GamePedia: https://bruji.com/gamepedia/gamepedia6.2.1.dmg
Thanks to BatteriesNotIncluded for these links