The development and proliferation of personal computers using the CP/M operating system in the late 1970s, and later DOS-based systems starting in 1981, meant that many sites grew to dozens or even hundreds of computers.
Pengembangan dan penyebaran komputer pribadi menggunakan sistem operasi CP/M di akhir 1970an, kemudian sistem dasar DOS mulai tahun 1981, menunjukan banyak situs yang tumbuh dari puluhan sampai ratusan komputer.