I'm not aware of a 3.5 sourcebook that presents 0th-level psionic powers, though there may be one out there.
For Pathfinder, the Psionics rules are all to be found in publications by Dreamscarred press. The core book, Psionics Unleashed, provided the Psion class with a limited number of "talents" that acted like level 0 powers. The Psionics Expanded series expanded these talents into actual level-0 psionic powers, and since the recently released Ultimate Psionics combined and updated the rules from these two sources, it probably also provides rules for level-0 powers (probably in a less haphazard manner than PsiExpanded, since that was a series of small supplements).
Here is the SRD for Psionic Talents.