Evaluate the effectiveness of three different anti-distraction operating systems (OSs) –  Freedom, Forest, and Cold Turkey –  in improving focus and productivity.  For each OS, analyze its features (e.g., website blocking, app limitations, time management tools, customizable settings), user interface (UI) and user experience (UX), and overall impact on user productivity.  Compare and contrast the three OSs across these dimensions, highlighting their strengths and weaknesses.  The evaluation should include a quantitative assessment (e.g., time spent on focused tasks, number of distractions, self-reported productivity levels) and qualitative assessment (e.g., user reviews, ease of use, overall satisfaction).  The final output should be a comparative report detailing the findings and recommending the most effective OS for enhancing focus and productivity, considering factors like cost, ease of use, and feature set.  The report should be structured with a clear introduction, methodology, results, discussion, and conclusion sections.  Success will be measured by the clarity, depth, and objectivity of the comparative analysis, providing actionable insights for selecting an anti-distraction OS.