Mid-credits
In a facility somewhere in Europe, two people are being held in cells. Both can do things they should not be able to do.
Wanda and Pietro Maximoff, held by Baron von Strucker, with Loki's sceptre nearby.
Leads to Avengers: Age of Ultron
Marvel Cinematic Universe
A man out of his own time starts pulling at a thread inside the agency he works for, and something very good at killing is sent to stop him.
Mid-credits
In a facility somewhere in Europe, two people are being held in cells. Both can do things they should not be able to do.
Wanda and Pietro Maximoff, held by Baron von Strucker, with Loki's sceptre nearby.
Leads to Avengers: Age of Ultron
Post-credits
Someone reads their own museum exhibit.
Bucky, at the Smithsonian, looking at who he used to be.
Leads to Captain America: Civil War