summing is based on git philosophy. So, lawyers is sharing legal templates like developer share their code on GitHub. With summing you can build your contract from the ground or using other users’ contract forms. It will take only a few minutes to make a complex airtight contract and e-sign it. Community helps to catch mistakes and identify the risks of the contract. Automatically update your contract based on community recommendations. Easily track the changes to the contract, because of git technology you don’t need to make tens of copies of one document, you work with your counterpart on one.