Blender Market - Render great looking glass in real time with Eevee! Most glass doesn't render well in Eevee because it can't handle multiple layers of refraction. The CGC Eevee Glass shader
PureGlass (EEVEE) - Blender Market
Every Trick for Shading Glass in Eevee - Fundamentals of Blender Materials & Shading (Bonus Video) - YouTube