currently i'm using this XAMPP Lite 1.7.3

  + Apache 2.2.14 (IPV6 enabled)
  + MySQL 5.1.41 (Community Server) with PBXT engine 1.0.09-rc
  + PHP 5.3.1 (PEAR)
  + Miniperl 5.10.1
  + XAMPP Control Version 2.5.8 (ApacheFriends Edition)
  + XAMPP CLI Bundle 1.6
  + XAMPP Port Check 1.5
  + XAMPP Security 1.1
  + SQLite 2.8.17
  + SQLite 3.6.20
  + OpenSSL 0.9.8l
  + phpMyAdmin 3.2.4
  + msmtp 1.4.19 (a sendmail compatible SMTP client)
  + Webalizer 2.21-02 (with GeoIP lite)
  + Ming 0.4.3 for PHP
  + PDF with pdflib lite v7.0.4p4 for PHP

Do i need all these things just for making and testing Wordpress Theme? Is there any other good lightweight alternative with only needed things?

What thing needed for Wordpress development only?