Any solution for generating Static WordPress websites?

[№Lucky]

Wanna make a notion on all possible Tools available for Generating Static Wordpress sites.
One of my co-workers found FLATsite.com - it’s an all in one-platform used to build and manage WordPress websites.
Could you share your views about it?
Any alternatives?

[Madagaskar]

Must say FLATsite.com static sites have an edge, my content will never be compromised because it’s not stored on the same server as the live website. Good job!