linux - i want to know about package managers in ubuntu

I have searched on internet but am unable to find complete solution of this question.

what is difference between pip , npm and bower in ubuntu and is there any other package manager for any other utility software?

I know there can be many utility software and their respective package manager but tell me about general utility softwares...

UPDATE

---

Now i know that my question does not make any sence because there are many package manages for different purpose in linux... - I have searched and found some of them.... - Several package managers and their description are as below....

---

Application-level package managers:

• Anaconda: a package manager for Python


• Assembly: a partially compiled code library for use in Common
  Language Infrastructure (CLI) deployment, versioning and security


• Bower: a package manager for the web developers


• Cabal: a programming library and package manager for Haskell


• CocoaPods: Dependency Manager for Objective-C and RubyMotion projects



• Composer: Dependency Manager for PHP


• CPAN: a programming library and package manager for Perl


• CRAN: a programming library and package manager for R


• CTAN: a package manager for TeX


• EasyInstall: a package manager for Python and the PyPI programming
  library which is part of the Setuptools packaging system


• Gradle: a build system and package manager for Groovy and other JVM
  languages


• Ivy: a package manager for Java, integrated into the Ant build tool,
  also used by sbt



• LuaRocks: a programming library and package manager for Lua


• Maven: a package manager and build tool for Java


• npm: a programming library and package manager for Node.js


• NuGet: a package manager for the .NET Framework and C++


• PAR::Repository and Perl package manager: binary package managers for
  Perl


• PEAR: a programming library for PHP


• pip: a package manager for Python and the PyPI programming library


• Quicklisp: a package manager and repository for Common Lisp


• RubyGems: a package manager and repository for Ruby



• sbt: a build tool for Scala, uses Ivy for dependency management


• leiningen: a project automation tool for Clojure