D-Tools is a software company specializing in providing comprehensive solutions for system integration and AV design. Their offerings include SIL Composer, an on-premise business software for designing, selling, and managing low-voltage systems, as well as cloud-based tools that streamline project workflows. They are designed to help integrators improve operational efficiencies through features like proposals, system design, and project management. The software supports businesses in the audiovisual, security, and IT industries by enhancing productivity and profitability.