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.

Computer chess - Wikipedia

Opening repertoire study with spaced repetition (+ database and game collections) - Chess Forums

ChessBase opening tree statistics

I made a program to automatically generate a practical opening repertoire for any opening. : r/chess

Mathematics, Free Full-Text

OpeningTree - Chess Openings by Michael Adams

Minimax Algorithm in Chess, Checkers & Tic-Tac-Toe

Different ways to visualize chess openings, what's your favorite? : r/chess

The Case for AlphaZero: Openings and Pawn Progression — The Yale Logos

Introduction to Tree Configurations

A Step-by-Step Guide to Building a Simple Chess Game, by Arslan Mirza, Medium

How to create your opening repertoire with Chess Base - an easy way!

Chess Skills: Fidelity Chess Challenger

Let's write a Chess GUI from scratch in Java - Chess Forums