Arcadia and Capella have their dedicated pages on wikipedia:
– Arcadia: https://en.wikipedia.org/wiki/Arcadia_(engineering)
– Capella: https://en.wikipedia.org/wiki/Capella_(engineering)
– Arcadia: https://en.wikipedia.org/wiki/Arcadia_(engineering)
– Capella: https://en.wikipedia.org/wiki/Capella_(engineering)