Apache Tomcat Vs Apache web server

Apache Tomcat Vs Apache Web Server
sometime back i setup tortoise SVN and i used apache server for network access to repository ..i had options for http,https etc.
yesterday I saw mani ans senthil setting up Apache TOMCAT. Me and Mani were wondering what is tomcat and what is apache web server...

Here is an excerpt from Wikipedia about apache Tomcat and Apache web server

Apache Tomcat (or Jakarta Tomcat or simply Tomcat) is a servlet container developed by the Apache Software Foundation (ASF). Tomcat implements the Java Servlet and the JavaServer Pages (JSP) specifications from Sun Microsystems, and provides a "pure Java" HTTP web server environment for Java code to run.

Tomcat should not be confused with the Apache web server, which is a C implementation of an HTTP web server; these two web servers are not bundled together. Apache Tomcat includes tools for configuration and management, but can also be configured by editing XML configuration files
Members of the ASF and independent volunteers develop and maintain Tomcat. Users have free access to the source code and to the binary form of Tomcat under the Apache License. The initial Tomcat release appeared with versions 3.0.x (previous releases were Sun internal releases, and were not publicly released). Tomcat 6.0.20 is the latest production quality release of the 6.0.x trunk (the branch for the 2.5 servlet specification), as of 2009.

Components of Tomcat

Tomcat version 4.x was released with Jasper (a redesigned JSP engine), Catalina (a redesigned servlet container) and Coyote (an HTTP connector).
[edit] Catalina

Catalina is Tomcat's servlet container. Catalina implements Sun Microsystems' specifications for servlet and JavaServer Pages (JSP). The architect for Catalina was Craig McClanahan.
[edit] Coyote

Coyote is Tomcat's HTTP Connector component that supports the HTTP 1.1 protocol for the web server or application container. Coyote listens for incoming connections on a specific TCP port on the server and forwards the request to the Tomcat Engine to process the request and send back a response to the requesting client.
[edit] Jasper

Jasper is Tomcat's JSP Engine. Tomcat 5.x uses Jasper 2, which is an implementation of the Sun Microsystems's JavaServer Pages 2.0 specification. Jasper parses JSP files to compile them into Java code as servlets (that can be handled by Catalina). At runtime, Jasper is able to automatically detect JSP file changes and recompile them.
[edit] Jasper 2

From Jasper to Jasper 2, important features were added:

* JSP Tag library pooling - Each tag markup in JSP file is handled by a tag handler class. Tag handler class objects can be pooled and reused in the whole JSP servlet.
* Background JSP compilation - While recompiling modified JSP Java code, the older version is still available for server requests. The older JSP servlet is deleted once the new JSP servlet has been recompiled.
* Recompile JSP when included page changes - Pages can be inserted and included into a JSP at compile time. The JSP will not only be automatically recompiled with JSP file changes but also with included page changes.
* JDT Java compiler - Jasper 2 can use the Eclipse JDT Java compiler instead of Ant and javac.

Best regards
K.Rajasekaran