A wide Collections of Modular Armor Modules
Truly Modular: Armory is a Modular Armor Mod with wide ranging support and options
more then 60 Modules split between base sets
Crafted Chainmail: a good armor against Projectile Damage
Plate Armor: the default Armor
Heavy Armor: Heavy Armor, excelent Protection, but moving with Elytra or swimming is difficult with it.
Wingsuit: Not much in the way of Protection, but allows for excelent Elytra Performance
Scuba: not the best in terms of Protection, but increased Swimspeed
Multiple visual/cosmetic options like Banners
Truly Modular:Armory is balanced arround providing similar armor values than vanilla, but those are often less than sensible. We recommend the usage of Armor Curve or similar mods to make vanillas armorscalling more sensible

An Addon for Truly Modular focusing on Armor and Elytras