Panilla is a very lite, very Vanilla modpack.
You know all those modpacks that claim to be lite and Vanilla-like? Well, they're not as much as this one! It's designed to provide a completely Vanilla experience- very immersive and very Vanilla. If you expect JEI to be in this modpack, you're in the wrong place. You might have trouble telling what is added by a mod and what is added by Minecraft itself- that's how Vanilla it is.
This modpack might be a decent way to introduce modded Minecraft to a friend who knows nothing about the modded world, and maybe someone who is skeptical of it. For a more modded experience, check out Lanilla.
If you want to look up information on the content this modpack adds, I recommend using a combination of the Official FTB Wiki and the Minecraft Wiki (the FTB Wiki will redirect to the Minecraft Wiki for Vanilla stuff, so looking there first is probably wiser). There will be an official wiki guide created some time soon.
If you have a mod suggestion, feel free to suggest it. Some mods I will not be adding include Tinkers' Construct, JEI or any minimap mod. Keep it Vanilla.
For a full mod list, click the "Relations" tab in the upper right corner of the browser. Consider donating to the mod authors; a Patreon list can be found here.