DSM-Online is a data protection management tool developed by CPExperts GmbH for small and mid-sized businesses and for data protection officers. You manage your GDPR documentation in one place: templates, tasks, reminders, exports and the upload of existing documents. The software guides users step by step through their obligations and shows where gaps remain. There are variants for Germany and for Switzerland. The product grew out of the practice of experienced data protection officers and is deliberately kept simple.
CPExperts GmbH is based in Dachau, Germany; no parent company is named. According to the product page, the software is hosted in Germany. For a European organisation this means data about your processing activities and vendors stays within the EU and under German law. No self-hosted variant is mentioned. Ask the vendor about the data processing agreement and about the ability to export all your data.