Collabora Online provides collaborative editors for text documents, spreadsheets, presentations and drawings. It supports Microsoft Office and OpenDocument formats and integrates with file platforms such as Nextcloud. Test complex documents and workflows against your chosen deployment.
The free Development Edition, CODE, is a rolling test release without an SLA or long-term support. Collabora does not recommend it for business production use. Supported subscriptions and hosting arrangements are separate choices; self-hosting still requires administration, updates and backups.
Sources: Product overview · Edition comparison