The snag with Fortitude HTTP is that it saves its settings in the registry at 'HKLM\Software\NetworkDLS\Fortitude HTTP' -- nothing that a yaP launcher won't be able to solve but the management program refuses to even run unless those keys are present.
Other than that, Fortitude HTTP looks like a pretty decent offering for the lightweight server category.
Fortitude HTTP is a web server for Windows which was created to give users a free, easy-to-use and open source alternative to commercial Windows web servers. Fortitude HTTP features hundreds of in-depth behind the scenes security features and a growing number of user defined security features. Supports: Multiple sites, port sharing, virtual roots, CGI, scripting engines, custom filters, HTTP compression & caching, HTTP 1.1 resume, an easy to use front end, a fully configurable XML back-end and much more.
Fortitude HTTP latest version (currently v18.104.22.168), released 2018-01-26, can be downloaded from www.networkdls.com /Software/Release/View/Fortitude_HTTP/1041.