Among other devices, Keelog sells a line of replacement power supplies for retro computers, from the Commodores to Amigas to Ataris. They are all brand new designs engineered with longevity and safety in mind.
They sell replacement parts, refurb kits, and some upgrades for classic computers. Their official documentation is in a wiki: https://console5.com/wiki/
A company that makes and sells components, new hardware, and software for classic 8-bit computers.
This website has a good archive of abandonware and some interesting web apps, like an online disk editor and visualizer for .d64 disk images.
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Commodore Free is a free-to-download Commodore enthusiasts' zine that includes everything from new software releases to howtos, reviews, hardware mods, and more. Every retrocomputing afficionado should give at least one issue a read.