When an elliptic curve-based cryptosystem is deployed, a single set of public parameters (consisting of a particular elliptic curve over a finite field as well as a generator of a prime order subgroup of its group of points) is typically shared across all users.
Some of these public parameters are standardized in some form. The best known ones are NIST-approved curve parameters, described as part of the FIPS 186-{2,3} standard, but there are others. For example, a French agency recently released a set of parameters recommended for local security applications (possibly over concerns re the security of curves over the very special base fields used by NIST?—they didn't say).
Is a list of such curve parameters compiled somewhere? Do you know any aside from the previous ones?