SumoBrain is FREE! SumoBrain offers cross-collection searching, portfolios, alerts, and other collaboration tools, as well as bulk PDF download capabilities. Sumobrain caters to intellectual property professionals, attorneys, and users in the corporate world. While SumoBrain was conceived as a subscription service, we have decided to take the radical step of making SumoBrain completely free. As long as we can support its costs without subscription fees, it will remain free indefinitely