Homebrew Update Checker - Server
It's one half of a 2 part system to keep your 3DS homebrew up-to-date. As of Alpha v0.0.1.0 it just tells you the available newest release files of a supplied repo. Eventually it will update local copies of homebrew repos to the latest remote release.
This part of the system is known as the Server, it keeps your files on your PC up-to-date. The second half, coming later, will be known as the Client, it keeps track of the release versions installed on your 3DS.
The final goal is for the Client and Server to echange information and stay up-to-date on both ends, preventing wasted time doing so manually.