I took these features directly from the servers websites. I tried to edit them by taking away features in the listing, but I really think all of the features listed are important, so I didn't remove any. I personally use Apache as a web server as it appears to be the industry standard.

LiteServe Features
Xitami Features
LiteServe supports windows systems, 95/98/NT/2000/Me/XP/2003/Vista   Xitami supports all UNIX platforms, OS/2, OpenVMS, Windows 3.x, Windows 95, and Windows NT.
Web Server...
· Mail Server...
      Multiple Domains
      Mail Forwarding
      Mail Relaying
      SMTP Authentication
      Unlimited Addresses
      User Quotas
      Catch-All Forwarding

· FTP Server...
      Resume (Upload/Download)
      Quotas
      Optional Connection and Bandwidth Limits (Throttling)
      Unlimited Accounts
      Advanced Access Levels (SuperUser)

· Ability to monitor and kill connections
· Logging with easy copy to clipboard feature
· Auto-Logon and Run on Windows startup
· Sits in the system tray when minimized
· Integrated DynDNS (www.dyndns.org) IP update client
· Integrated No-IP (www.no-ip.com) IP update client 		 
  • Server supports HTTP/1.0, FTP, CGI/1.1, SSI protocols, server-side image maps, user-defined MIME types, multiple document roots, persistent connections, on-the-fly server reconfiguration, customisable error messages, multilingual HTML documents and multilingual CGI scripts, HTTP GET, HEAD, PUT, DELETE, MOVE, and COPY methods, customisable HTTP headers;
  • Security: basic authentication per directory, FTP access rights per user and per directory, on-the-fly user and password management, Unix setuid, restrict access by IP address, safe CGIs, SSL option (Xitami/Pro);
  • Logging: CLF, IIS, XML, and custom log file formats, programmed log file cycling, asynchronous reverse DNS lookups;
  • Virtual hosts: multihoming HTTP and FTP hosts, HTTP/1.1 virtual hosts, full independent configuration (log files, web spaces, access rights,...) per virtual host;
  • Configuration: editable config files, or through a web-based administration interface (WBA) that includes virtual host wizard, server control (restart, terminate), active connection monitor, and full configuration of server options, security, users, etc.;
  • Applications: direct support for CGI scripts in Perl, Awk, Rexx, Python, WSX protocol for plug-in extensions, SSI protocol for dynamic web pages, ISAPI under Windows, filter protocol for arbitrary web page filters, LRWP protocol for persistent (fast CGI) applications in Perl, C, Python, Java, Java Servlets;
  • Deployment: installs ready-to-run, portable to Windows, OS/2, Unix, OpenVMS, fully portable web sites and web applications;
  • Performance: internal multithreading engine, fast even on slower systems, small footprint, option to restrict HTTP and FTP connections, FTP quota manager.