As developers, we create some kind of knowledge, as we crawl through the internet we discover new things, as we test frameworks libraries, etc..

A part of our work sometimes is to figure out something anyone else in the company have never done. Once it's figured out, the information shouldn't stay in the mind of the person who found it, it should be shared, so other developers from the team would not have to waste time on the same problem/problematic.

Also I watch several websites that makes me discover, new tools, programs, library that are totally relevant to share with my colleagues

So the question is, how do share information in your development team ? Do you have any methodology ? Do you use a particular software ?