Videotex character sets 1983, 1987, 1993. Seems like these would have required hi-res or vector fonts?
ASCII by Matt Matthew of Blocktronics, 2017.
Viznut’s image-to-text conversion, using unscii-8 with 256 colours. Unscii is a set of Unicode-compatible fonts based on fonts from 80′s platforms and games. Download here.
Very hi-res ANSI art by Lobo.
Made by DataDoor with custom PETSCII-font.
How many circles does it take to show a koala? Koalastothemax.com is an interactive web-thing by Vadim Ogievetsky.