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Plug-ins

Plug-in Boutique

Rc-20 - instant color and vintage sound. Top 5 Plugin for me.

Portal - My Go to Plug-in for insane Melodies.

Key Detector - Good if you don't know music theory.

Analog Lab - Solid investment. Recreation of multiple real synths. 

LANDR Studio

You get mastering, distribution, plugins, samples, and collab tools all in one spot instead of paying for a bunch of separate services.

The link gives you 20% OFF LANDR Studio and also helps support the page.