I'm using my own text webcam thing: https://github.com/dhotson/txtcam .. not too fancy, just using greyscale with some shading characters to do some basic "dithering".
Also, if you're on Mac OSX and using iTerm2 version 3, you might be interested in its 24bit colour support. It's not that widely supported yet in other terminals unfortunately though: https://gist.github.com/XVilka/8346728
I never even knew that there was true colour support in terminals, let alone how many terminals support it! Hmm, so I'd need to figure out if SSH sends the terminal's ability to render true colour. And then also update hiptext. It would make a really big difference to the "readability" of the texttop output.