Construction management software and related tools help companies manage construction projects and crews, both on- and off-site. There are a variety of open-source and free construction management tools available. For your consideration, I have compiled seven open-source and free construction management tools - some are specifically marketed to the construction industry while others are general project management tools. Free construction management tools and construction project management software have no contract or license fees but offer a limited amount of features and limited-or-no customer support. Open-source construction management tools are often customizable and have low or no license fees but have a moderate-to-high TCO and limited-or-no customer support. On this page we highlight the best free construction management and estimating tools and three free construction project management tools. Without further ado, here are the best free construction management tools based on real-user reviews.