This is a program that uses an optimized quadratic sieve algorithm in order to find rational points on hyperelliptic curves.
The program is distributed under the GNU GPL, version 2 (or later).
Read the documentation.
The current version is ratpoints-2.2.2 from May 15, 2023. This version can use 256-bit AVX registers and has been optimized further, so that it now runs considerably faster than ratpoints-2.1.3.