9 Best European Alternatives to Microsoft Teams (2026), Compared

The best European alternative to Microsoft Teams is Infomaniak kSuite (Switzerland): team chat (kChat), video meetings (kMeet), cloud storage, mail and online office in one Swiss suite, from CHF 1.76 per user a month. If you want to run everything on your own servers, pick Nextcloud Talk (Germany) – open source, with chat, calls and files in one place.

I wrote this ranking for teams that use Teams every day – chat channels, video calls, shared files – but no longer want their internal communication with Microsoft Corporation, a US company. Microsoft offers an EU Data Boundary for customers in the EU and EFTA, but its own documentation says data may still leave the EU in “limited circumstances”. The European tools below are run by companies in the EU, Switzerland and Norway. I compared ten tools and kept nine. Six of them are full Teams replacements with chat and calls; three are video-only tools that replace Teams meetings but not Teams chat.

What are the best European alternatives to Microsoft Teams?

If you only have a minute: these are the European tools I would switch to from Microsoft Teams, in order. Numbers 1–6 do chat and video; numbers 7–9 do video meetings only.

1. Infomaniak kSuite (Switzerland) – chat, video, drive, mail and office in one hosted suite. Best for most teams leaving Microsoft 365.
2. Nextcloud Talk (Germany) – open-source chat and calls next to Nextcloud Files. Best for self-hosting.
3. Stackfield (Germany) – end-to-end encrypted chat, tasks and files with meetings on higher plans. Best for project teams with strict compliance.
4. Wire (Germany/Switzerland) – always-on encryption for chat, files and video calls up to 150 people. Best for secure messaging.
5. Element (UK) – Matrix-based chat and calls you can run yourself. Best for large organisations and the public sector.
6. Threema Work (Switzerland) – an encrypted business messenger from 3.00 per user a month. Best for mobile-first teams.
7. OpenTalk (Germany) – video meetings from the Heinlein group, hosted in Berlin. Best video-only replacement.
8. alfaview (Germany) – meeting rooms for up to 500 people, priced per room. Best for big meetings and classes.
9. Whereby (Norway) – browser meetings with no download, on AWS. Best for quick calls with clients.

Microsoft Teams alternatives compared

Prices from public pricing pages. Affiliate links and sponsored placements are labelled.

“Data hosted in” shows where each service runs, based on the DNS records of its app or website and an ASN lookup (25 Oct 2026), together with what the company says about its data centres. For Nextcloud you choose the hosting yourself.

How I compared the Microsoft Teams alternatives

I looked at ten European chat and video tools and kept nine. The order is driven by how much of Teams you keep after switching – first the tools that combine chat, meetings and files, then the meeting-only tools – then by security and data sovereignty, then by price. Concretely, I weighed five things:

• Jurisdiction and ownership – where the company is registered, who owns it and whether the product runs on a US cloud such as AWS.
• Feature match with Teams – channels and direct messages, video meetings, guests, file sharing and apps for desktop and phone.
• Price – the cheapest paid plan per user or per room, whether there is a free plan, and minimum team sizes.
• Security – end-to-end encryption, open-source code, self-hosting and certifications such as ISO 27001 or BSI C5.
• What users say – ratings on Trustpilot, read together with the number of reviews, which is small for most business tools.

I left out openDesk: it is a strong open-source workplace suite from ZenDiS GmbH, a company owned by the German federal government, but it is built for public administration and has no public price. Rocket.Chat and Mattermost are not in the list because the companies are based in the USA. All data comes from the vendors’ own pricing, about, security and legal pages and from Trustpilot, checked on 25 October 2026.

The best European alternatives to Microsoft Teams, reviewed

Each tool below gets the same treatment: who is behind it, what users say, what it replaces from Teams, pros and cons, and my opinion.

1. Infomaniak kSuite

The closest European match for Teams plus Microsoft 365 – chat, meetings, drive, mail and office, hosted in Switzerland

kSuite is made by Infomaniak Network SA, a Swiss company from Geneva founded in 1994, with a branch in Zurich. Its main shareholder is the Infomaniak Foundation. Infomaniak runs its own data centres in Switzerland and says kSuite data is processed only there; kChat is designed and hosted in Geneva. Its servers are on Infomaniak’s own network (AS29222).

What users say. Infomaniak has 3.9/5 from 2,068 reviews on Trustpilot, but that profile covers all Infomaniak products, from web hosting to mail, not only kSuite. Users praise the value for money and the Swiss hosting.

What it replaces from Teams – and what it doesn’t. kChat gives you public and private channels, direct messages, video calls inside channels, files up to 100 MB, webhooks for other apps, and free guest access for customers and partners in private channels. kMeet handles video meetings, with no participant limit on paid kSuite plans. Around them you get kDrive storage, mail, calendar, contacts and online office (OnlyOffice; Microsoft Office Online on Business and above), so it replaces Teams and most of Microsoft 365 at once. What you lose: kChat is not end-to-end encrypted (data is encrypted in transit and at rest), it is not open source and cannot be self-hosted, and your Teams chat history cannot be moved over automatically – Infomaniak imports Teams history only on request.

Facts: HQ Switzerland (Geneva) · founded 1994 · free plan: yes (15 GB, 1 address) · paid plans per user/month excl. VAT: Standard CHF 1.76, Business CHF 7.34 (CHF 3.67 in the first year), Enterprise CHF 13.83 (CHF 6.92 in the first year), first-year discount with yearly commitment · ISO 27001:2022 since 2018 · B Corp since 2025 · apps for web, desktop and mobile.

Switching from Teams: moderate – files and mail move over with Infomaniak’s import tools, but chats and channels start from zero.

My take: kSuite is first because it is the only tool here that gives you back the whole Microsoft 365 package – chat, calls, files, mail and documents – in one hosted Swiss account, at a lower price than Teams Essentials on the entry plan. If end-to-end encryption is your main reason for leaving Teams, look at Stackfield or Wire instead. Best for: small and mid-sized teams replacing Teams and Microsoft 365 together. Not for: organisations that need end-to-end encryption or their own servers.

Visit infomaniak.com →

2. Nextcloud Talk

Open-source chat, calls and webinars on your own Nextcloud server

Nextcloud Talk is made by Nextcloud GmbH in Stuttgart, Germany, whose managing director is Frank Karlitschek. Talk is part of Nextcloud Hub, which also includes Files, calendar, mail and office. Nextcloud is open source under the AGPL licence: you run it on your own servers or with a hosting partner, so you decide where your data lives. Nextcloud’s own website runs on Hetzner in Finland (AS24940).

What users say. Nextcloud has 2.7/5 from 51 reviews on Trustpilot, a company-wide profile. Users praise owning their data and the app store; complaints are about file sync errors, difficult self-hosting and slow support.

What it replaces from Teams – and what it doesn’t. Talk gives you group and one-to-one chat, video calls with screen sharing, webinars with a waiting lobby and, with the High Performance Backend, phone dial-in over SIP. Calls are end-to-end encrypted in the web and desktop apps. Because it sits next to Nextcloud Files, calendar and office, the combination comes close to Teams with SharePoint. What you lose: someone has to run it – either your own IT or a hosting partner – and for Enterprise customers Talk is an extra subscription on top of Files. Published prices start at 100 users; Nextcloud One, the managed service for smaller teams, has no public price.

Facts: HQ Germany (Stuttgart) · open source (AGPL) · Talk subscription €42 per user/year net (from 100 users) · Enterprise Standard €71.29 per user/year net (from 100 users, Talk extra) · Nextcloud One for under 100 users: price on request, hosted in Germany · apps for web, Windows, macOS, Linux, iOS and Android.

Switching from Teams: hard – you need a server or hosting partner first, then you move files and invite people.

My take: Nextcloud is second because it replaces nearly as much of Teams and Microsoft 365 as kSuite, and it is the only option where you can choose any data centre, including your own basement. That freedom costs effort: it is a platform you run, not a service you sign up for. Best for: organisations with IT staff who want full control over their data. Not for: small teams without anyone to run a server.

Visit nextcloud.com →

3. Stackfield

A German workspace with end-to-end encrypted chat, tasks and files – meetings on Premium

Stackfield is made by Stackfield GmbH in Munich, Germany, and has been on the market since 2012. It stores data in German data centres, processes it only on servers in the EU and says it uses no AWS, Google Cloud or Azure – only European subcontractors. Its website and app run on the German provider SOPRADO (AS20546).

What users say. Stackfield has only one review on Trustpilot, which is too few to say anything about it.

What it replaces from Teams – and what it doesn’t. Stackfield organises work in rooms with chat, tasks, files, pages, whiteboards and discussions, so it replaces Teams channels and adds project management that Teams leaves to Planner. Room content is end-to-end encrypted with AES-256 and RSA-2048 in your browser, so Stackfield cannot read it. Certifications include ISO 27001, ISO 27017, ISO 27018 and a BSI C5 attestation. What you lose: video conferences come only with Premium (€18 per user a month) and Enterprise, storage is small (6–12 GB), there is no free plan, and it is the most expensive tool in this list.

Facts: HQ Germany (Munich) · since 2012 · per user/month net: Starter €9 (up to 10 users, 3 rooms), Business €14, Premium €18 (with conferences), Enterprise €28 · yearly billing saves 17% · free plan: no, 14-day trial (conferences limited to 3 minutes) · Office add-on €2.40 per user/month.

Switching from Teams: moderate – setting up rooms is quick, but you rebuild your channel structure and tasks by hand.

My take: Stackfield is the most secure full workspace in this list that still feels like a hosted service: encrypted, German, certified and without US clouds. It sits third because meetings cost extra in practice – you need Premium – and because the price is far above Teams Essentials. Best for: project teams in regulated sectors that want chat and tasks in one encrypted tool. Not for: teams on a tight budget.

Visit stackfield.com →

4. Wire

Always-on end-to-end encryption for chat, files and video calls – but hosted on AWS

Wire was founded in 2012. Its parent company, Wire Group Holdings GmbH, is incorporated in Berlin, where its headquarters and development are; the website imprint names Wire Swiss GmbH in Zug, Switzerland, and there are offices in Paris and Southfield, USA. Wire says European investors hold over 90% of the group, including Skype co-founder Janus Friis and Schwarz Gruppe. Its servers are in Germany and Ireland, but the web app runs on Amazon Web Services (AS16509) in Frankfurt – a US cloud.

What users say. Wire has 2.9/5 from just 10 reviews on Trustpilot, too few to be representative. Reviewers like the encryption and sign-up without a phone number; complaints are about refunds and slow support.

What it replaces from Teams – and what it doesn’t. Wire gives you group chats, file sharing, screen sharing, guest links and video conferences for up to 150 people on the SMB plan, with apps for the web, Windows, macOS, iPhone and Android. Messages, calls and files are always end-to-end encrypted (Proteus and MLS), the code is open source, and you can run it in Wire’s cloud, on-premises or hybrid. What you lose: there is no shared drive or office suite, the free plan allows calls between two people only, and the SMB plan stops at 100 users.

Facts: HQ Germany (Berlin), imprint in Zug, Switzerland · founded 2012 · free plan: yes (up to 5 users, no group calls) · SMB €7.45 per user/month yearly or €8.94 monthly (up to 100 users) · Enterprise: custom price · ISO 27001, ISO 27701 · open source · runs on AWS.

Switching from Teams: moderate – easy to set up, but files need a separate storage tool.

My take: Wire is the best-known European secure messenger for business, and its encryption is the real thing. It sits fourth because it replaces Teams chat and calls but not Teams files, and because its cloud runs on AWS – your messages are encrypted, but the infrastructure belongs to a US company. Best for: teams that put encrypted chat and calls first. Not for: anyone avoiding US cloud providers.

Visit wire.com →

5. Element

Matrix-based chat and video calls you can host yourself – from a UK company

Element was founded in 2017 as New Vector Ltd and renamed in 2020. Its main company, Element Creations Ltd, is registered in London, UK, with subsidiaries in Rennes (France), Düsseldorf (Germany) and Delaware (USA). The UK is outside the EU. Element is built on Matrix, an open standard, and you run it yourself or as a managed cloud. Its public web app sits behind Cloudflare.

What users say. Element has 2.7/5 from 10 reviews on Trustpilot – too few to mean much. Users praise the privacy and decentralisation; complaints are about delayed messages and support.

What it replaces from Teams – and what it doesn’t. Element gives you rooms, threads, direct messages, file attachments and polls, plus end-to-end encrypted voice and video calls through Element Call, with apps for the web, Windows, macOS, Linux, iPhone and Android. Element holds ISO 27001:2022 and Cyber Essentials Plus. What you lose: there are no published prices, the paid Enterprise plan starts at 100 users, the free Community edition is meant for non-professional use, and there is no file storage or office suite.

Facts: HQ United Kingdom (London) · founded 2017 · Community: free, self-hosted, 1–100 users, non-professional use · Enterprise: per user, from 100 users, price on request · Sovereign: per deployment · open source · ISO 27001:2022.

Switching from Teams: hard – a professional setup needs a sales contact and a hosting decision.

My take: Element is the most flexible secure chat platform in this list, and governments use Matrix for good reason. It sits fifth because the company is in the UK, prices are not public and it is built for big deployments rather than a ten-person team. Best for: large organisations and public bodies that want their own Matrix server. Not for: small businesses that want to sign up and start.

Visit element.io →

6. Threema Work

The Swiss encrypted messenger for business – chat, polls, files and group calls

Threema Work is made by Threema AG in Pfäffikon SZ, Switzerland. Since early 2026 it is owned by Comitis Capital GmbH; before that, Afinum held the majority from 2020. Threema runs its own servers in a data centre in Zurich, and its website is on the Swiss network of Nine Internet Solutions (AS29691).

What users say. Threema has 3.1/5 from 56 reviews on Trustpilot, a profile that covers the consumer app as well. Users praise the encryption and Swiss development; complaints are about the dated web app and slow support.

What it replaces from Teams – and what it doesn’t. Threema Work gives you one-to-one and group chats, polls, file sharing and end-to-end encrypted group calls for up to 32 people, with central user management for admins. The apps are open source and run on iPhone, Android, Windows, macOS and Linux. What you lose: it is a messenger, not a workspace – no channels in the Teams sense, no meetings for large groups, no shared files – and the web app needs your phone app linked.

Facts: HQ Switzerland (Pfäffikon SZ) · Core 3.00 and Professional 5.00 per user/month, paid yearly (currency not shown on the pricing page) · free plan: no, 30-day trial for up to 30 users · OnPrem from 200 users · open-source apps · group calls up to 32.

Switching from Teams: easy – staff install an app they may already know from private use.

My take: Threema Work is the cheapest secure option here and probably the easiest to roll out. It ranks last among the chat tools because it replaces the Teams chat app on your phone, not the full workspace on your desktop. Best for: field teams and companies that mainly message on phones. Not for: office teams that live in channels and long meetings.

Visit threema.com →

7. OpenTalk

Video meetings only – from the Heinlein group, hosted in Berlin

OpenTalk is made by OpenTalk GmbH in Berlin, Germany, part of the Heinlein group, which also runs mailbox.org; its managing director is Peer Heinlein. OpenTalk and Heinlein Hosting run the video servers in two data centres in Berlin, on Heinlein’s own network (AS199118).

What users say. OpenTalk has no reviews on Trustpilot yet.

What it replaces from Teams – and what it doesn’t. OpenTalk replaces Teams meetings: meeting chat, polls, whiteboard, breakout rooms, recording, streaming and, on Premium, phone dial-in, for up to 50 (Standard) or 200 people (Premium). An on-premises version exists for your own data centre, and OpenTalk points to an open-source community. What you lose: everything except meetings – there is no team chat, no channels and no file storage – it runs in the browser only (a mobile app is in development), and the free plan stops at 5 people and 30 minutes.

Facts: HQ Germany (Berlin) · free plan: yes (5 participants, 30 minutes) · Standard €7.50 per user/month or €75/year (50 participants, 240 minutes) · Premium €12.50 per user/month or €125/year (200 participants, no time limit) · the pricing page says both excl. VAT and incl. VAT · on-premises option.

Switching from Teams: easy for meetings – send an OpenTalk link instead of a Teams link. You still need a chat tool.

My take: OpenTalk is my pick for video meetings if your chat already lives somewhere else, or if you pair it with mailbox.org. It is the first of the video-only tools because it is German end to end and offers an on-premises version. Best for: teams that only need to replace Teams meetings. Not for: anyone looking for a full Teams replacement.

Visit opentalk.eu →

8. alfaview

Video meeting rooms for up to 500 people – priced per room, not per user

alfaview is made by alfaview gmbh in Karlsruhe, Germany. It hosts in Germany with several providers, including Telekom, IONOS, noris, SysEleven, Hetzner and OVHcloud; its website runs on the German provider SOPRADO (AS20546).

What users say. I found no Trustpilot rating for alfaview; on G2 it has 4.7/5 from 11 reviews, a small sample.

What it replaces from Teams – and what it doesn’t. alfaview replaces Teams meetings and webinars. Rooms come with chat, whiteboard, polls, file sharing, 50 breakout rooms, live transcription in 8 languages and live translation, and hold up to 300 (Professional) or 500 people (Premium). It holds ISO 27001, ISO 9001, the BSI IT Security Label and TISAX, and has apps for web, Windows, macOS, Linux, iPhone and Android. What you lose: there is no team chat outside meetings, no file storage, and phone dial-in costs extra.

Facts: HQ Germany (Karlsruhe) · free plan: yes (1 room, 50 participants) · One €12/year (1 room, 100 participants) · Professional €3.90 per room/month or €39/year (300 participants) · Premium €9.90 per room/month or €99/year (500 participants) · prices excl. VAT · ISO 27001, BSI IT Security Label.

Switching from Teams: easy for meetings – create a room and share the link.

My take: alfaview is the best value for big meetings: you pay per room, not per person, and one Premium room holds 500 people. It sits behind OpenTalk only because there is no on-premises option listed and its strength is large sessions rather than daily team calls. Best for: schools, trainers and companies with large meetings. Not for: teams that need everyday chat.

Visit alfaview.com →

9. Whereby

Simple browser meetings with no download – from Norway, on AWS

Whereby is made by Whereby AS in Måløy, Norway. Norway is in the European Economic Area but not in the EU. Whereby says it runs mainly on AWS in Dublin, and its website resolves to Amazon (AS16509) – so this European product depends on a US cloud.

What users say. Whereby has 3.7/5 from 50 reviews on Trustpilot. Users praise how easy it is for guests; complaints are about slow support, billing and dropped connections.

What it replaces from Teams – and what it doesn’t. Whereby replaces Teams meetings with fixed room links that guests open in any browser, without an account or download. Pro rooms hold 100 attendees, Business rooms 200, with recording and custom branding. It holds ISO 27001:2022. What you lose: there is no team chat, no files, end-to-end encryption only in small rooms, and it runs on AWS.

Facts: HQ Norway (Måløy) · free plan: yes (4 attendees, 30 minutes) · Pro $10.99 per host/month (100 attendees) · Business $13.99 per host/month, minimum 3 hosts (200 attendees) · prices excl. VAT, yearly billing saves 17% · ISO 27001:2022 · runs on AWS.

Switching from Teams: easy – share a room link instead of a Teams invite.

My take: Whereby is the friendliest meeting tool for people outside your company, which is often where Teams frustrates most. It is last because it is video-only, based outside the EU and hosted on AWS. Best for: consultants and small firms who meet clients by link. Not for: teams that want their data off US clouds.

Visit whereby.com →

What European Teams alternatives cost compared with Microsoft Teams

Teams Essentials costs $4 per user a month on a yearly plan, and Microsoft 365 Business Basic, which adds mail and SharePoint, costs $7. Video-only tools are often priced per host or per room, so compare them with what you actually use.

Prices as shown on each vendor’s pricing page on 25 October 2026, in the currency shown there. Infomaniak shows lower first-year prices on its Business and Enterprise plans.

How to switch from Microsoft Teams to a European tool

1. Decide what you are replacing. If you use Teams together with Outlook and SharePoint, pick a full suite like Infomaniak kSuite or Nextcloud. If you only use Teams for meetings, a video tool like OpenTalk or alfaview is enough.
2. Move your files first. Export SharePoint and OneDrive folders and import them into the new drive – Infomaniak has an import wizard for OneDrive.
3. Rebuild your channels. Teams chat history rarely moves over automatically, so recreate your main channels, invite guests and pin the important documents.
4. Run both tools in parallel. Keep Teams for a few weeks for external meetings while your team gets used to the new tool.
5. Cancel the licences. Once everyone has moved, reduce your Microsoft licences – but archive what you need for legal retention first.

Microsoft Teams alternatives: FAQ

My verdict: which European Teams alternative to switch to

Most teams leaving Microsoft Teams should start with Infomaniak kSuite: it replaces chat, meetings, files, mail and documents in one Swiss account, and the entry plan costs less than Teams Essentials. If you have IT staff and want your own servers, choose Nextcloud Talk. If encryption is the reason you are leaving, Stackfield gives you an encrypted German workspace and Wire encrypted chat and calls – but remember that Wire’s cloud runs on AWS.

If you only used Teams for video calls, you do not need a whole suite: OpenTalk or alfaview replace Teams meetings from German servers, and alfaview’s per-room pricing is hard to beat for large sessions.