New role as a network engineer - which software tools to use?

Hey folks

Wow! I am so proud right now. My goal I set for myself two years ago has been achieved, I am now part of the dark arts magic that is a 'network engineer'.

My background is infrastructure, mostly on Linux but more recently I have been using Windows a lot more due to the enterprise company that I've joined.

What I was just wondering is, what are the common software tools at the disposal of a network engineer? I already have a few tools that I use, but I was wondering what you guys all use.

For context, my new role is at an enterprise level network, with 50+ offices and a lot of our kit is Juniper.

Thanks all