PiTre (Protocollo Informatico Trentino) is a web application for the electronic registry and document management of public bodies. It supports registering, filing and classifying documents, digital signatures and certified e-mail (PEC), and integrates with, among others, electronic invoicing, an online notice board and a service for long-term preservation of digital documents. It is used by municipalities, valley communities, schools, museums and other public institutions in Trentino. You install it yourself on your own servers.
PiTre is owned by the Autonomous Province of Trento and maintained by Trentino Digitale S.p.A., the province's in-house IT company, based in Trento, Italy. The source code is published on GitHub under the open-source licence AGPL-3.0-or-later, so you can run it yourself. Data then stays on your own infrastructure and under your own control, with no dependency on a provider outside Europe. Documentation and examples are mainly available in Italian.