MailCatcher [Link]
catch-all email address and display nicely in browser. Great tool for Email debugging on local machine.

Watchr [Link]
Realtime file monitoring – Great to working with PHPUnit – Continue Testing

PHP-Build [Link]
Build multiple versions of PHP to use in single machine.

PHPenv [Link]
Use multiple PHP versions. can configure for global configuration, project directory, and shell. That great!.