Looks like a failed/abandoned project. The user that opened the PR (only 6 months ago) to add uptimesniper to the list has since deleted their GitHub account, a

Looks like a failed/abandoned project. The user that opened the PR (only 6 months ago) to add uptimesniper to the list has since deleted their GitHub account, and the uptimesniper website and twitter are gone. I guess someone sniped its uptime!