Nuts is a simple (and smart) application to serve desktop-application releases.

It uses GitHub as a backend to store assets, and it can easily be deployed to Heroku as a stateless service. It supports GitHub private repositories (useful to store releases of a closed-source application available on GitHub).
/download/latest/download/latest/:os/download/:version/download/:version/:os/download/channel/:channel/download/channel/:channel/:osbeta, alpha, ...)/update?version=<x.x.x>&platform=osx.zip for Squirrel.Mac, .nupkg for Squirrel.Windows, .dmg for Mac users, .../notes/:versionFollow our guide to deploy Nuts.
This server provides an endpoint for Squirrel auto-updater, it supports both OS X and Windows.
Check out the documentation for more details.