Not a lot. But it has been very good at marketing things. There were several web browsers long before Internet Explorer came along (Mosaic, Netscape, etc), but

Not a lot. But it has been very good at marketing things. There were several web browsers long before Internet Explorer came along (Mosaic, Netscape, etc), but Internet Explorer was the first one that most people came across. This is very similar to Edison, who also wasn't all that good at inventing things, but also was good at marketing stuff. Many of Edison's "inventions" weren't his, but he made them popular so people thought they were his.