I’ve used a few online GM tools for campaigns Kanka.io, Masterscreen.app, and ObsidianPortal.com. I even tried using OneNote once, but MS corrupted my campaign file into oblivion. I’m favoring Kanka currently, and I haven’t figured out Masterscreen, yet.
I’m sure there are other GM support tools for campaigns out there, aren’t there?
Since I started using Foundry VTT, I just use that for most of what I need in terms of keeping track of significant NPCs, items, and other notes. I do keep some broader campaign and adventure notes in OneNote as well, but since you’ve been burned by that already once, that’s a nonstarter.
I use Tabletop Simulator which has character sheets and journals for the players and me to use. If I really need to use an external program it’s MS Word that I then export to pdf to import directly into TTS.
That’s how I got all my rulebooks I need into TTS through the use of pdf import.
I’ve just started experimenting with AboveVTT. It’s a chrome-extension for DND beyond. I find it pretty easy to use so far: setting up scenes, fog of war. Limited by its dependence on DNDBeyond of course.
The simplest, most useful, easy to use tool that has maps, tokens, and fog of war is OwlBear Rodeo. Love it love it love it. No download. Players just jump in by clicking on a link I give them and they just use their browser. Players can be on PC, their phone or tablet. Sure there are plenty of more complex options for this sort of software and I’m sure that once you master them, they are even better, but for having something that you can all just easily use and use well… today… without even going through a bunch of long tutorials… OwlBear Rodeo is king right now for me. I tested it out for my Marvel campaign a couple of times and it works like a charm.
I use one note exclusively. I love it. It’s perfect for me. I work at a company that uses the Microsoft tech stack, so I’m very familiar with their tools. Using it for D&D is pretty natural for me. You got me a little paranoid that my game might get corrupted though, lol.
It’s perfect for taking notes, storing maps and icons (one can store copies of pictures, which you can later download). I write all my campaign stuff and generally share the campaign book with players, putting the GM only stuff behind a password. It’s great for collaborative note taking.
Gametable used to be the king of simple, low to no learning curve virtual table top software. Then the Dev team moved on and it stagnated.
Java based, infinite surface, a few layers, built in chat and dice rolling, shared pogs (avatars) across the network so everyone had a local copy, handy pointer visible over the network so you could point to stuff, basic drawing tools. Very simple and easy to use.
I use Scrivener for all my notes, planning, etc.
Experimenting with kanka and Chronica for player presentation of data. FoundryVTT is my preferred VTT, but is a little heavy for simple handout and setting references my players want to do between games.
PCGen > WARNING: This is the bleeding part of the bleeding edge character generation technology. You were warned!
There is also an Android companion app for full character sheet and stats. http://pcgen.org/
Others of Note:
Treepad (or any hierarchical note pad)
WorldMachine (Terrains) - There may still be a free version
I’m using Scabard.com for my campaigns now. Super easy to use, you can link to other documents you put up, including places, characters, events, items, and others. The creator is active at getting user input on features to add, bug reports, etc. Can’t recommend highly enough!