GitHub is the best place to share code with friends, co-workers, classmates, and complete strangers. Over three million people use GitHub to build amazing things together.
Bower is a package manager for the web. It offers a generic, unopinionated solution to the problem of front-end package management, while exposing the package dependency model via an API that can be consumed by a more opinionated build stack. There are no system wide dependencies, no dependencies are shared between different apps, and the dependency tree is flat.
It is based on a developer-centric package manager called NuGet. Unlike manual installations, It adds, updates, and uninstalls programs in the background requiring very little user interaction.
It allows users to host and manage personal or enterprise-wide packages, applications, and components. It was originally designed as a private NuGet manager and symbol and source server.