我怎样才能创建一个免费的公共github账户终身这是可能的

Here I have a couple of Web Application on node.js which I intended to share and store. Before I have a free account for 1 month in GitHub with in that I shared some of my Applications code and now the free tire has expired and i cannot publish my code further. As I'm a student i cannot afford to get a premium membership. So can one update me on how to use GitHub for life time for free (or) with some other alternatives to GitHub. Here I have a couple of Web Application on node