This document summarizes and compares 10 free and open source project management software options for small businesses. It provides details on the key features and limitations of each option, including the number of users allowed, storage limits, pricing plans, and specialized tools. Harvest, Zoho Projects, Bitrix24, Trello, 2-Plan, Asana, MeisterTask, GanttProject, Orange Scrum, and Freedcamp are all highlighted and their pros and cons discussed.