Free http 1.1 webserver software for linux

Bauk HTTP server project is a high-performance Web server. Bauks advanced architecture and unique design provide high performance and many original features, ie. ability to serve unlimited number of Virtual Hosts/simultaneous HTTP connections per single server process without performance loss.
Full installation requires only a single directory of UNIX file system used as a working directory for Bauk executable. Configuration process is simple and performed by adjustment of Bauk configuration script.
Main features:
- Full HTTP/1.1 and CGI/1.1 standard compliance
- HTTP authentication, Basic method, auth script per Virtual Host
- Unlimited number of Virtual Hosts without performance loss
- Virtual Host aliases
- Unlimited number of simultaneous HTTP connections per single Bauk process with no performance loss (Special Edition)
- Persistent (Keep-Alive) connections
- URL Path; define URL and path with type of access; ie. read, write, browse, execute, require HTTP authentication, etc.
- OPTIONS, GET, HEAD, POST, PUT, DELETE, TRACE methods of HTTP request defined by HTTP/1.1, configurable per URL Path
- Content negotiation by client language and charset
- Configurable MIME types
- Configurable HTTP headers by MIME type
- Configurable HTML error documents / CGI executables
- Directory browsing; view content of directories with HTML links
- Execution of CGI programs/scripts
- SUID/SGID for CGI execution
- Chroot for CGI execution; chroot CGI to Virtual Hosts home
- 3 security layers for CGI execution: by URL limit to X-only ie. CGI dir; for RX-URL imply X-only for X-able files; impose X-only by file extension ie. CGI executables wrongly placed and no X flag
- Quotas for CGI execution; number of simultaneous CGI processes, execution priority, max execution time (duration), max CPU time, memory, filesize
- Quotas of network traffic in/out per Virtual Host (I/O speed limit)
- Quotas of connections per Virtual Host
- Quotas of connections per client IP number
- Access restriction by IP address; forbid and allow-only
- Access restriction by valid HTTP referrer
- Configurable HTTP-log format and location for Virtual Hosts
- Configurable singleprocess or multiprocess architecture
- Chroot for Bauk server process
- Full configurability; virtually all Bauk features are configurable by simple configuration script adjustment
- Easy configuration by script language; built-in configuration script interpreter with preprocessor, file-inclusion, block and single-line comments, two data types, variables, arithmetic operations and built-in functions
- Easy administration
- Flexibility
VLAJKOS INVISIBLE LICENSE (VIL):
This sofware is protected by VIL and the license states:
Youre welcome to use this software. Remember the rightful author if youre using any parts/unique components of Bauk software.
Enhancements:
- This release includes various feature enhancements
- improved PHP, Perl, Gawk
- Tcl interpreter connectors
- additions to the documentation.

POW - Plain Old Webserver is a Firefox extension that adds a server to your browser.
Information and a tutorial for POW can be found at this wiki
http://davidkellogg.com/wiki/Main_Page?origin=moz_pow
and at this post
http://forums.mozillazine.org/viewtopic.php?t=447189
The Plain Old Webserver uses Server-side Javascript (SJS) to run a server inside your browser. Use it to distribute files from your browser. It supports Server-side JS, GET, POST, uploads, Cookies, SQLite and AJAX. It has security features to password-protect your site. Users have created a wiki, chat room and search engine using SJS.
This version includes:
- Documentation to show you how to build a Server-side Javascript program.
- Added security to prevent arbitrary file reads.
Enhancements:
- Standalone server support (separate download)
- Firebug support through standalone server
- Auto-restart of server after window close
- startup.sjs file auto-created for new installs
- Saving to subdirectory fixed
- Changed mime-types to binary by default
- Added many binary mime-types
- Added loopback-only option
- Fixed root directory problem
- Fixed XML download problem
- Smallest download size ever 99K -> 89K -> 73K -> 63K

lns.http is a simple framework for writing Common Lisp web applications. The project handles the incoming connections, parses HTTP headers and queries, and finally hands control over to your URL handler.

lns.http is a HTTP/1.1 compatible web server but tries to achieve compatibility with lesser (down to the informal HTTP/0.9) clients.

The lns.http web server uses lisp-network-server to take care of network handling.

This software is licensed unter the LGPL.

HTTP::BrowserDetect is a Perl module to determine the Web browser, version, and platform from an HTTP user agent string.

SYNOPSIS

use HTTP::BrowserDetect;

my $browser = new HTTP::BrowserDetect($user_agent_string);

# Detect operating system
if ($browser->windows) {
if ($browser->winnt) ...
if ($brorwser->win95) ...
}
print $browser->mac;

# Detect browser vendor and version
print $browser->netscape;
print $browser->ie;
if (browser->major(4)) {
if ($browser->minor() > .5) {
...
}
}
if ($browser->version() > 4) {
...;
}

# Process a different user agent string
$browser->user_agent($another_user_agent_string);

The HTTP::BrowserDetect object does a number of tests on an HTTP user agent string. The results of these tests are available via methods of the object.

Roxen WebServer is a complete Web server. Roxen WebServer is platform-independent, modular, and features a version with strong 128/168-bit encryption.
Add-on products for information retrieval, visitor behavior analysis, and powerful tools for application development offering connectivity to databases are available.
Altogether the Roxen Platform is a secure Web-based workgroup solution for time and cost-efficient content and Web site management.
Main features:
- Open source code.
- A web-based interface for easy configuration and administration.
- The highly regarded Roxen graphics support which can be used for dynamic generation of e.g. headers, images and charts.
- Integrated MySQL database.
- Server-side programming via RXML, Java, Perl, PHP, CGI scripts and more.
- Strong encryption.
- Modular architecture where server extensions can be loaded without shutting down the server process.
- Platform-independent architecture makes custom modules portable with no extra effort.
Enhancements:
- Support for LDAPS was improved.
- Options for logging were increased.
- The administration interface was improved.
- Several image-cache related fixes were made.
- Some minor performance increases were made.
- Lots of minor bugs were fixed.