The Liquid Font Family is a collection of small bitmap fonts to be used on small displays, e.g. LCD displays on HTPCs, mp3-players, status displays on phones, printers, remote controls, etc.etc.
The overall goal is to provide nice-looking, very readable fonts that allow displaying a lot of information. So in contrast to most other bitmap font projects for tiny fonts, Liquid fonts are proportional fonts, not mono-spaced, because more characters can be displayed horizontally this way, and it also looks nicer. This means they require graphics capable displays. In particular, they are not primarily for 5×7 pixel LCDs, which have hardwired(=missing) horizontal and vertical empty pixel rows and columns to separate characters and lines.
The main work of the Liquid family is ‘Liquid Mean’. This font is a 6×8 pixel font which additionally focusses on good Unicode support. Currently, it already supports Latin, Greek and Cyrillic for a few hundred languages. It implements a superset of the European MES-2 standard, a recommendation for European Latin/Greek/Cyrillc fonts to support the vast majority of European languages, including most minor languages.
Liquid Mean goes beyond that. The support includes many more languages, even those which require a vast amount of accents and diacritic marks, like Ancient Greek, Vietnamese, and Mandarin Chinese Romanisation.
Liquid Mean explores what amazing things can be done on a very limited display with max. 6×8 pixels per character.