I have recently created a small tool in PHP (webserver Enviroment) to check a Minecraft Server by checking the number of online players, if it is online, its Motd, supported version and whether it is really a MC Server or just a WEB site / Service.
Version 0.4.3: HERE
Preview
PS: No type of user data and / or cookies are tracked on this site.
The only data that is saved in the LOG is the domain you are checking in the Tool (NOT yours!)
