The Community Toolbox is a free, online resource for those working to build healthier communities and bring about social change. It offers thousands of pages of tips and tools for taking action in communities. There are tools to learn about community assessment, planning, intervention, evaluation, advocacy, and other aspects of community practice. Under continuous development since 1994, the Community Tool Box is widely used in teaching, training, and technical support. Currently available in English, Spanish, and Arabic and with millions of user sessions annually, it has reached those working in over 230 countries around the world.