For those in arithmetical algebraic geometry, the ratpoints program might be of interest. It is GPL'd (GPLv3) and written in C. Some documentation was just posted to the math arxivs:
Title: Documentation for the ratpoints program Authors: Michael Stoll Categories: math.NT Comments: 14 pages MSC-class: 11Y50; 11D41; 11G30; 14H25; 14G05 License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/ \\ This note explains how to obtain, install, and use the ratpoints program. The program finds rational points up to a specified height on hyperelliptic curves using a highly optimized quadratic sieving algorithm. \\ ( http://arxiv.org/abs/0803.3165 , 12kb) --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---