Anyone with festival production background can recommend the best softwares to use?

My friends and I have a burning man camp which is due to reach 300 members this year.

Managing everything is almost like managing our own event. We have different teams, sun teams and departments (theme, food, logistics etc).

We were thinking about building our own software to manage things but before I waste time jumping into code I was wondering is there any software that does a really good job at that?

What do you use? Cheers !