25 European Collaboration vendors.
Collaboration: Team communication, file sharing, video conferencing, document editing. Below, every vendor in the knowledge base headquartered in the EU or the EEA, each checked by us for headquarters, owner, hosting and licence. Non-European vendors are listed at the bottom with a link to their European alternatives.
46 vendors in total: 25 European, 14 American, 7 other; 25 open source. Last checked: 4 October 2026.
Why this matters for digital sovereignty
Collaboration tools handle internal communications, shared documents and meeting recordings that often carry sensitive business or personal information, making hosting location and the CLOUD Act directly relevant. Check where messages and recordings are stored, who the ultimate owner is and whether end-to-end encryption is available.
European vendors
- BigBlueButton (self-host)Self-hosted / open source
Virtual classroom and video conferencing; self-hostable
European Union (distributed) · open-source
- CryptPadEU sovereign
End-to-end encrypted collaboration (FR/EU).
France · open-source
- FluffyChatSelf-hosted / open source
Open-source Matrix chat client with focus on simplicity and privacy
Germany · open-source
- HedgeDocSelf-hosted / open source
Markdown collaboration; self-host.
Germany · open-source
- HulySelf-hosted / open source
Open-source project management and team collaboration platform (self-hosted only — vendor-hosted cloud service shut down in 2026 due to funding; huly.io hosted service discontinued)
France · open-source
- HumHubEU sovereign
German open-source social intranet and collaboration platform
Germany · open-source
- InfomaniakEU sovereign
Swiss hosting provider with own kSuite (email, drive, video)
Switzerland
- KopanoEU sovereign
Kopano Cloud is the proprietary successor to Kopano Groupware, which reached end-of-life on March 31, 2025. The open-source Kopano Groupware (AGPL) is no longer maintained; Kopano Cloud is available under a commercial/proprietary license only.
Netherlands
- LinphoneSelf-hosted / open source
Open-source VoIP and real-time communications platform (voice, video, encrypted messaging) developed by Belledonne Communications, headquartered in Grenoble, France since 2010; actively maintained (SDK 5.5).
France · open-source
- NextcloudEU sovereign
Open-source self-hosted collaboration platform for file sync, chat, and office
Germany · open-source
- Nextcloud DeckSelf-hosted / open source
Kanban board app for project management within Nextcloud
Germany · open-source
- Nextcloud TalkSelf-hosted / open source
Video/voice within Nextcloud; self-host.
Germany · open-source
- Office.euEU sovereign
100% European office suite from The Hague, built on open-source (Nextcloud), EU-only data centres
Netherlands · open-source
- ONLYOFFICEEU sovereign
ONLYOFFICE is a Latvian office suite that was open source (AGPLv3) until version 9.4 (May 2026), when additional Section 7 terms were introduced requiring logo retention in forks while simultaneously denying trademark rights. The Free Software Foundation ruled this a prohibited further restriction under AGPLv3 Section 10, breaking OSI compliance. The software is now effectively source-available with restrictions. ONLYOFFICE Workspace Cloud was discontinued on 2 March 2026; the successor DocSpace (cloud and self-hosted) continues.
Latvia
- Open-XchangeEU sovereign
European open-source email, calendar, and productivity suite
Germany · open-source
- OpenTalkEU sovereign
German open-source video conferencing platform with focus on privacy and GDPR
Germany · open-source
- ProtonEU sovereign
Swiss encrypted email, calendar, drive and VPN suite
Switzerland
- SendRecSelf-hosted / open source
Open-source (AGPLv3), self-hostable async video messaging platform built for EU data sovereignty; operated by a Romanian sole proprietorship (Bucharest) offering both Docker self-hosting and an EU-managed cloud tier. Note: small, early-stage product (reported ~30 users at time of review) — HQ corrected from proposed generic "EU" to Romania based on legal imprint.
Romania · open-source
- SpacedeckSelf-hosted / open source
Open-source collaborative whiteboard platform for visual collaboration
Germany · open-source
- StackfieldEU sovereign
German project management and team communication with encryption
Germany
- TeamwireEU sovereign
German enterprise messaging with GDPR compliance and MDM
Germany
- TixeoEU sovereign
French secured video conferencing platform with end-to-end encryption
France
- TwakeEU sovereign
Open-source collaboration platform by LINAGORA (chat, files, tasks, calendar, video); absorbed Cozy Cloud in 2025.
France · open-source
- WherebyEU sovereign
Norwegian video conferencing platform, no download required
Norway
- WireEU sovereign
End-to-end encrypted collaboration platform by Wire Swiss GmbH (Zug, Switzerland)
Switzerland · open-source
Non-European vendors in this category
For each vendor, the page with European alternatives and the sovereignty profile.
- Non-EU vendorCisco WebexUnited States · 6 EU alternatives
- Non-EU vendorDialpadUnited States · 8 EU alternatives
- Non-EU vendorElement (Matrix)United Kingdom · 8 EU alternatives
- Non-EU vendorFlockIndia · 5 EU alternatives
- Non-EU vendorGoogle MeetUnited States · 8 EU alternatives
- Non-EU vendorGoogle WorkspaceUnited States · 8 EU alternatives
- Non-EU vendorJitsiUnited States · 8 EU alternatives
- Non-EU vendorLiveKitUnited Kingdom · 8 EU alternatives
- Non-EU vendorMatrix / SynapseUnited Kingdom · 8 EU alternatives
- Non-EU vendorMattermostUnited States · 8 EU alternatives
- Non-EU vendorMicrosoft 365United States · 8 EU alternatives
- Non-EU vendorMicrosoft Exchange OnlineUnited States · 8 EU alternatives
- Non-EU vendorMicrosoft TeamsUnited States · 8 EU alternatives
- Non-EU vendorPumbleSerbia · 8 EU alternatives
- Non-EU vendorRingCentralUnited States · 8 EU alternatives
- Non-EU vendorRocket.ChatBrazil · 8 EU alternatives
- Non-EU vendorSlackUnited States · 8 EU alternatives
- Non-EU vendorWhimsicalUnited States · 7 EU alternatives
- Non-EU vendorZimbraUnited States · 8 EU alternatives
- Non-EU vendorZoomUnited States · 8 EU alternatives
- Non-EU vendorZulipUnited States · 5 EU alternatives
Frequently asked questions
Which European Collaboration vendors are there?
The knowledge base lists 25 European Collaboration vendors, including BigBlueButton (self-host), CryptPad, FluffyChat and HedgeDoc. Every record is checked for headquarters, ultimate owner, hosting locations and licence.
Are there open-source options for Collaboration?
Yes. Open-source Collaboration software from Europe includes BigBlueButton (self-host), CryptPad, FluffyChat and HedgeDoc; you can self-host it with the encryption keys under your own control.