BitBucket and GitHub are the Source Code Management Tools, with the help of these tools a developer or programmer could control and contribute their Source Code as per their requirements.
BitBucket and GitHub, both use GIT and they have their own characteristics. While i am learning to use GIT, I started with GitHub and still use it.
GitHub provides an awesome User Interface and is really simple to use but while I am trying to create a private repository and request to contribute then it won’t allow. It Shows message like this: