I have used Atlassian Confluence for that in the past and it works pretty well for that task. Pretty much any wiki would do, its mostly a matter of how you deci

I have used Atlassian Confluence for that in the past and it works pretty well for that task. Pretty much any wiki would do, its mostly a matter of how you decide to structure the information. My advice: start slowly and grow organically; documentation can be prematurely optimized.