I've picked Rumble's Slim framework. Party because it had the word "Slim" in the title and I wanted a framework that wouldn't tax network connections too heavily, since we are gaming entirely remotely. I also picked it because it is very pretty and so far it is working exceedingly well. It also has the right level of automation for my tastes. Some may prefer damage automation but I like that it requires some intervention at that point. It keeps the players involved. I particularly enjoy the library function for powers, which is extremely useful for Mages who may change their powers every day. I am using the framework "as-is" except for a small addition to calculate Evocation Apprentice damage.
So far I have split the campaign into two files. One with the "above ground" encounters and one with the "dungeon delve".
Below is the results of the first session with my group:
Keep On the Shadowfell
The Storm Priest Haagan has been tasked by his church to investigate rumours of a death cult in the area, possibly lead by a twisted priest named Kalarel. Should the rumours be true the cult will need to be put down. A warrior named Pontuus and a Drow Rouge named Alykacha seek news of their old friend and mentor, Douven Staul. A rabid explorer he headed to Winterhaven 3 months ago, chasing reports of a dragon burial site. His wife hasn't heard from him and is begging Pontuus and Alykacha to find him. A Dragonborn mage called Moonscale and a Drow Hexblade called Happy Angel have been approached by a scholar named Parle Cranewing to locate an old keep near Winterhaven that fell into disrepair when the empire of Nerath crumbled a hundred years earlier. Return with a map of what remains and he promises to pay 250 gp. So the five adventurers agree to share their tasks and possible rewards (Yes, you agreed to share. No, you did, really!) and head to Winterhaven, taking the job of armed escort for a trader resupplying the hamlet.
On the morning of the second day of the journey, the adventurers are ambushed by a group of 8 Kobolds. With their spears, short swords and dragon scale shields, the lizards attempt to swarm the party. However they retaliate with hammers, lightning, spears, swords, eldritch bolts and the healing words of the Gods. A short battle later, the Kobolds are destroyed and the adventurers and the trader resume their journey to Winterhaven.