Thr site[1] itself is facetious. There's no "real" 0ver, just projects that couldn't commit to stability after a certain level of maturity that are being shamed. I found it to be a funny stab at the likes of Hashicorp (especially after multiple upgrade ordeals):

> To drive the point home, even further down the stack, HashiCorp's Terraform also complies with ZeroVer's cutting-edge versioning scheme. With Vault and Terraform, HashiCorp demonstrates industry recognition of the importance of ZeroVer in infrastructure.

[1] https://0ver.org/