al-Fattāh

The One who is the judge and revealer. The One who opens what is closed. The One who is the judge of what shall be opened.

The One by whose guidance that which was closed is opened and the unclear is made clear. The One who lifts veils and who opens the heart.

The One who unties the knots, and softens that which was hardened. The One who continually offers goodness and mercy. 

The One who gives victory. The One who opens the door to success. The One who holds the keys to victory and success. The One who reveals the solution to all problems.
 

From the root f-t-h  which has the following classical Arabic connotations

to open, unlock, unfold
to make victorious
to reveal, inform, explain, make clear
to judge, decide
to grant, permit
 

This name is used in the Qur'ān. For example, see 34:26

The name of first chapter of the Qur'ān, al-Fātiha, is based on this same root, and is generally translated as The Opener, or The Opening.

The Arabic word miftāhī, translated as key, meaning that which opens or unlocks, is also based on this same root.