SDG Systems is a software solutions company based in Pittsburgh that helps businesses gain value from their data using technologies like RFID and IoT. They offer three main software products: TallyFlow for asset tracking, PhotoTag for photo management, and TallyPay for invoice generation. The company also provides programming services for businesses that need help building mobile or cloud applications. They are a good fit for manufacturers and other organisations looking to improve productivity and reduce costs, or for companies needing additional software engineering expertise.