Internet Explorer is a relatively simple executable that relies on other Windows DLLs to do pretty much everything that needs to be done. Check out the architec

Internet Explorer is a relatively simple executable that relies on other Windows DLLs to do pretty much everything that needs to be done. Check out the architecture here: http://msdn.microsoft.com/en-us/library/aa741312.aspx http://msdn.microsoft.com/en-us/library/aa741312.aspx Ideally just the Trident rendering engine (in MSHTML.dll) could be ported to other platforms for web developer use, but I don't know how reliant on other Windows features it is. I also don't think it's much of a priority (or at all feasible) for the IE team to re-architect their entire product, but I would love for them to prove me wrong.