Program for creating an opening tree - Chess Forums

What's a program I can use for recording variations where the moves are put in a tree format? What I'm looking for is something similar to another site's "study" only with all the lines and sub lines with same-size text in a tree format like in the book MCO-15.

ChessBase Support - Details

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ChessBase opening tree statistics

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Your Gateway to the World of Chess – Chess Forum

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ChessBase opening tree statistics

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