SEI unknown could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. This tool was originally created by Heitor. We cannot guarantee that the program is safe to download as it will be downloaded from the developer's website. Before launching the program, check it with any free antivirus software.
From the developer:
The Fastest Layer 1. Parallelizing the EVM // Join the Sei community: discord.gg/Sei RT ≠ endorsement.
You may want to check out more software, such as US Digital SEI Software, SurfSeis or jAmaSeis, which might be related to SEI.