CryptPad is an open source document collaboration service that can be self-hosted. CryptPad is zero-knowledge, which means that the operator cannot read the content written on the site. Since it can be self-hosted there are many instances. The most known, which is also driven by the main developers however is cryptpad.fr.
The offer of CryptPad is free for guests and registered users. As a registered user you get 1GB of storage for free. CryptPad also offers a paid plan starting at 5€ per month with more storage. Since CryptPad is an open source project, donations are also accepted.
Read more about the pricing of the service here.
cryptpad.fr is hosted in the EU on OVHcloud.
ONLYOFFICE is a document collaboration service from Latvia. They offer integrations for several services like SharePoint and Jira as well as self-hosted Cloud services like ownCloud and Nextcloud.
ONLYOFFICE is open source and developed by Ascensio System SIO, headquartered in Riga, Latvia. OnlyOffice is delivered as a SaaS solution or as an installation for private network deployment. They also offer a white label solution.
Nuclino is a collaborative document editing service from Germany.
Nextcloud Office is the document collaboration service of the Nextcloud suite. Nextcloud is a open source file hosting service for self-hosting. Nextcloud Office is part of the Nextcloud suite and is based on the open source tool Collabora Online.
Collabora Online is an open source document collaboration service. It can be self-hosted and is used by many cloud solutions like Nextcloud Office. They offer a text (Writer), spreadsheet (Calc), presentation (Impress) and vector graphics (Draw) editor.
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