How can I download a ZIP of a plugin?

Hello,

I'm trying to download a copy of a plugin, when I click "Install" the WPMU site prompts me to install the WPMU DEV Dashboard. This is fine for my test install, but I'd rather not install additional plugins for certain client's sites.

Is there somewhere to download a copy of plugins for self installation? I found a post referencing manual installation but it's years old and I don't see the button described.

Thanks