Creating your own generators and random tables has become more popular, with tools such as perchance and chartopia making it easier even if you aren't a programmer.
Some create tools for others to use, some do it because they want a project and some tools are solo affairs, for your own game, system or world
And in recent years there has been a rise in Solo RPGs, people running a character or group through a campaign world or set adventure. Many make use of a suite of tools for adventures, monsters and combat actions.
Anyone can see the source for generators on perchance so they can be copied and edited by others and are a good place for collaboration.
If you are a coder then you have the option of using whatever language you like to use. There are many interviews with generator creators on Rand Roll to give inspiration.
RPG Generator Resources
There is an rpg generators community at reddit.
If you want inspiration for random generators I cover many in my Generator Guides.
For more on the theories of making random generators there is Chances Muse by Steven Savage of 7th Sanctum
I use python for my own generators and the main python site has a list of resources for non-programmers
Send me a message or leave a comment if you have any other resources that might be useful.
And there is also a discord channel for rand roll and chaos gen