Vithanco TOC is described as 'A dedicated visual editor for the TOC Thinking Processes. Previously called Visual Thinking with Theory Of Constraints'. There are three alternatives to Vithanco TOC for a variety of platforms, including Mac, Windows, Online / Web-based, Android and Android Tablet. The best alternative is TheBrain, which is free. Other great apps like Vithanco TOC are Flying Logic (Paid) and Vithanco (Freemium).