If you are running OS X 10.11 El Capitan, the most stable and feature-rich options are and MAMP 5 .
Because the official MAMP website primarily features the latest releases for modern macOS, you must visit their page or trusted archives to find El Capitan-compatible installers: Downloads - MAMP & MAMP PRO
Older installations (like MAMP 3.5) were standard during the El Capitan era, but you may encounter minor issues, such as Apache failing to start, which often requires renaming the envvars file in /Applications/MAMP/Library/bin to _envvars . Where to Download Legacy MAMP
For developers working on vintage hardware or maintaining older projects, finding the right is essential. While the latest versions of MAMP now require macOS 11.0 (Big Sur) or higher, El Capitan is still fully supported by several legacy versions of the software. Compatible MAMP Versions for El Capitan
This version officially supports OS X 10.10.5 and later. It introduced modern features like MySQL 5.7 and improved PHP management while remaining compatible with El Capitan's architecture.
Highly stable on El Capitan, version 4 is a great alternative if you need a slightly lighter footprint.