This program facilitates comparison of various font and font rendering parameters. It displays sample line of text in sizes from 5 to 36px simultaneously and allows changing of font size range and increment, hinting, autohinting, anti-aliasing, subpixel smoothing, and aspect, immediately showing the changes on the screen. All Unicode characters are divided into blocks of 128 characters, and user can choose block of 128 characters to use as sample line of text.
Install gwaterfall :
Debian: sudo aptitude install gwaterfall
Ubuntu: sudo apt-get install gwaterfall
or download and install :
$sudo dpkg -i gwaterfall_0.1-4_i386.deb
Fedora : yum install gwaterfall