MAMP is an easy install for Mac OS X users of Apache, MySQL, and PHP. It creates a local environment for you to run your own Apache, MySQL, and PHP server, to test out websites. MAMP is free while the MAMP Pro is a 14-day trial (unless you are already a registered 2.x users).
MAMP is available in English, French, German, Italian, Japanese, Russian, Spanish while MAMP Pro is available in English, German, and Japanese.
While release notes are not yet available, it is noted in the 2.0.2 download area that these versions of MAMP and MAMP Pro are compatible with Mac OS X 10.7 Lion.
Keep in mind that this version requires a minimum of Mac OS X 10.6.6 to install.
When release notes are available, I’ll update them here.
It’s available from the MAMP Downloads page.