What add-ons can you not live without?

I recently installed VoiceAttack, and while I played Elite: Dangerous for a couple of weeks without it, I'm not sure how I managed! VA is basically a third-party app that translates commands spoken through your microphone into various key presses.

For a flight sim like E:D, it's invaluable since it allows me to keep both hands on my HOTAS setup while simultaneously managing other ship systems. It's also pretty immersive in a far-future sci-fi setting like Elite's, because who wouldn't want to talk to a spaceship and have it follow your commands? What about you, Massively readers? What game add-ons can you no longer live without?

TH

i think i could manage without a stephen hawkings system in my microphone, but usually i like games with guns addons because more guns is better innit.