You could have downloaded SquidHQ 1.0 for Mac from our application library for free. This free software for Mac OS X was originally created by SquidHQ Team. The program lies within Games, more precisely Tools.
From the developer:
SquidHQ is your standard Minecraft launcher that allows you to join any Minecraft server, regardless of its state with Mojang’s blacklisting decisions. If your favorite Minecraft server is blacklisted by Mojang, this launcher will allow you to easily bypass it without jumping through any hoops along the way. SquidHQ launcher makes this process faster and easier to bring back your freedom of choice when it comes to where you play.
You may want to check out more software for Mac, such as zeroN64, which might be related to SquidHQ.