Vegan

For me the replacement depends on the culinary use it replaces.

For scrambles: Brick of extra firm tofu, sliced and crumbled to scrambled egg texture. Mix in 1tsp turmeric, 1tsp black pepper, optional 1tsp garlic powder. Heat up in a pan stirring occasionally, and the turmeric turns it yellow. Once cooked add the secret ingredient: Black salt / kala namak, a salt with a strong sulfur taste (Do this at the end as heat destroys that taste).

For fried: A mung bean-based liquid mix like Just Egg. If you don't want to pay the vegan tax for a bottle of Just it's easy and cheap to diy in the kitchen, lots of recipes out there.

For baking: A tapioca and starch-based mix like Bob's Red Mill egg replacer.