servers tab not visible in eclipse v3.7.2

Windows ->Customize Perspective ->Command Group Visibility -> check Server if it is unchecked.

make sure you have added tomcat to eclipse if you don not have then add it.below steps will help you.

Window > Preferences > Server > Runtime Environments 
Add
Apache > Apache Tomcat 5.5

You are done.Hope it will help.

Also make sure you downloaded the "Eclipse For Java EE Developers" package as I do not believe that the "Eclipse for Java Developers" contains the Servers view.

Here is the link:-

http://www.eclipse.org/downloads/packages/eclipse-ide-java-ee-developers/indigosr1

It might be possible that the JAVAEE perspective is not installed or the perspective is not shifted to JAVAEE.

Try windows > perspective > open perspective > other >JAVAEE

If you can't see JAVAEE in the others tab, then it is not installed. In the latest version of eclipse (2019-12), it needs to be manually installed. Please follow the below link to install it.

https://stackoverflow.com/a/60405942/2606228

I am using Luna. I have following following steps.

1. Help -> Install New Software
2. Choose "Luna - http://download.eclipse.org/releases/luna" site
3. Expand "Web, XML, and Java EE Development"
4. Select i) Eclipse Java EE Developer Tools 3.6.3.v201501281502 ii) Eclipse Java Web Developer Tools 3.6.3.v201502041526 iii) Eclipse Web Developer Tools 3.6.3.v201501312139
5. Restart Eclipse.