Sheldon Brown's sprawling personal site became an enduring technical reference for bicycle repair, drivetrains, wheels, fixed gear, old bikes, commuting, touring, and the culture around maintaining machines yourself.
The Merkur Encyclopedia is a specialist technical archive for Ford's short-lived North American Merkur brand, collecting XR4Ti and Scorpio repair notes, wiring information, ECU data, bulb charts, buyer guidance, modifications, and hard-won owner knowledge.
Australian Valve Amps has spent more than twenty years documenting Australian and New Zealand guitar and PA amplifiers with circuits, photographs, repair notes, safety guidance, oddities, and hand-coded HTML.