Hello,
I would like to present an interval ECDLP solver based on the Pollard's kangaroo method.
This program is fully open source and available on GitHub:
https://github.com/JeanLucPons/KangarooIt has GPU support (CUDA Only) and works on both Linux and Windows.
This program is currently under development.
Thanks to test it and to share ideas of improvements here

Buddy, Can you make something like brainflare for search start range of private keys ? Brainflare operate word, so brainflare operate 128-256 bytes privkeys. Can you made soft for addition to Kangaroo - firs search start big range, second search exact range with kangaroo

Big Thank You.