From the pen of San Kim comes Microlite20 Psionics, a 'litified rendition of the SRD Psionics rules complete with the Psion and Psychic Warrior classes, Powers, Items and Monsters!

Download it here.

UPDATE: San has revised this document further, making it even smaller (in the best Microlite tradition), added additional credits and a shiny updated layout and logo. If you've already downloaded it, grab it again for the update!

UPDATE 2: Now available in handy pocketmod format!

Download the Psionics Pocketmod
Download the Powers Pocketmod