This uses the code from icon, so it's very similar, but it has a few removals and additions!
First, there is no caption or link, hence the name "simpleicon". Second, you can have up to four icons together! They stack in a 2x2 grid.
Using Simpleicon to get 4 images:
Using Simpleicon to get less than 4 images -- note that you must leave unused pipes, else it'll fail: