Download Lazarus

Install Lazarus 2.0.5 or try the latest beta

Lazarus 2.1 beta 2

You'll have to deal with the usual Firefox security questions if you install from here, or you can install Lazarus from addons.mozilla.org. But please note: The versions at mozilla are often several weeks behind those listed here.

Older versions are available here and there's a changelog if you want to know what's new