Music theory tools and plugins are software applications that assist musicians in understanding and applying music theory within DAWs or as standalone programs. These tools range from chord and melody generators like Scaler 2 and Melody Sauce 2 to scale and key identification plugins like deCoda, and comprehensive music theory workstations. Some even utilize AI, such as InstaComposer, to generate musical ideas. These tools offer benefits like aiding in learning, sparking inspiration, increasing efficiency, facilitating experimentation, and making music theory more accessible, proving invaluable for musicians of all levels seeking to enhance their creative process and theoretical understanding.