Maryland Code, Courts and Judicial Proceedings § 12-202

(1) Leave to prosecute an appeal in a post conviction proceeding;

(2) Leave to appeal from a refusal to issue a writ of habeas corpus sought for the purpose of determining the right to bail or the appropriate amount of bail;

(3) Leave to appeal in an incarcerated individual grievance commission proceeding;

(4) Leave to appeal from a final judgment entered following a plea of guilty in a circuit court; or

(5) Leave to appeal from an order of a circuit court revoking probation.