BadBlue is a tiny, ultra-friendly web server that lets you share files, search other PCs, even learn & deploy full-blown web apps using tools like PHP, Perl, etc.
Features:

Let others search your machine (for the files and folders you specify) instantly
Publish your own web site, running on your machine
Learn, develop and deploy HTML, PHP, CGI, ISAPI and other web technologies
Transcode Access, Excel and Word data into HTML live
Can run as a Windows 9X or NT service for non-stop operation

The license of this software is Free Trial Software, you can free download and get a free trial.