Postiz is a social media management platform for scheduling, automating and analysing content across social networks. Users plan posts in a visual calendar and review them before they are published. It can be self-hosted with Docker, in which case the operator provisions the server, creates developer apps for each network and handles updates and backups. It can also be used as the managed Postiz Cloud service. The codebase is published on GitHub under the AGPL-3.0 licence.
Paid plans are sold by Gitroom Limited, a company incorporated in Hong Kong, outside the EU and EEA. The homepage does not state where the managed cloud service stores data, and it mentions no GDPR commitment. For a European organisation, the AGPL-3.0 licence allows self-hosting on infrastructure the organisation controls, which keeps content on its own servers. Connections to the social networks themselves still run to those platforms' services.