Collaborative open-source document editing. Controlled by you. Integrate Collabora Online into your existing platform or access via one of our global partners.
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Collabora Online 26.04 is here! 🚀
Our major annual release for 2026 brings together a decade of open-source, privacy-respecting document collaboration with new AI-assisted workflows, on your terms.
Highlights include:
✨ Optional AI assistance in Writer, Calc and Impress
🔎 Richer document comparison and review workflows
📊 New functions, formatting and filtering in Calc
🤝 Improved collaborative presenting in Impress
✅ Accessibility improvements, including BITV 2.0 recognition for Writer
⚡ Continued interoperability, performance and usability improvements
Built on the feedback and testing from CODE, Collabora Online 26.04 is now ready for production environments, helping organisations collaborate securely, scale confidently, and keep control of their documents.
Read the blog to see all the newest features: buff.ly/S84bNlv
New in our community interview series: Areg, who started contributing to #CollaboraOnline to challenge himself and learn in public.
His first patch replaced bitmap icons in the font selector with vector graphics. Today he works on interoperability and back-end fixes, including a recent Calc crash fix.
He also shares what he's learned from code reviews, and why your first contribution doesn't have to be intimidating.
Do you remember your first open source contribution? We'd love to hear about it!
Read Areg's story: buff.ly/KXztfPF
#OpenSource
ALT Purple Collabora graphic with the large heading “INTERVIEW with Areg Nakashian”. On the right, Areg, a young man with dark curly hair in a purple Collabora hoodie, smiles while holding a microphone. In a white box on the left is his quote: “Access to information and to knowledge shouldn’t be a secret, and Collabora Online being open source aligns with that.
Our team is packing its bags for November!
📍 2–3 Nov: DigSov EU Summit, Berlin
📍 3 Nov: @Nextclouders Enterprise Day, Madrid
📍 10 Nov: DACHNUG, Vienna
📍 13–14 Nov: @SFScon, Bolzano
Or join our webinars with Adfinis and @OpenText Filr on 5 Nov, and to learn more about the Microsoft Office Online Server deadline on 19 Nov.
Come say hello!
🔗 More events on our events page: buff.ly/f5alsgX
#CollaboraOnline #OpenSource #DigitalSovereignty
ALT Collabora Office locations for November across Europe: Nextcloud Enterprise Day — Madrid, 3 Nov; DigSov EU Summit — Berlin, 2–3 Nov; DACHNUG — Vienna, 10 Nov; SFSCon — Bolzano, 13–14 Nov; plus online webinars on 5 & 19 Nov.
Before a plan leaves your team, make sure everyone who opens it can see it’s still a draft.
In Collabora Online Writer, you can add a text watermark like DRAFT or CONFIDENTIAL to the page background:
1. Open your document in Writer.
2. Go to Layout > Watermark.
3. Type your text.
4. Pick the font, angle, transparency and colour, then click OK.
The watermark stays visible while editing, in print and in PDF exports, so a draft keeps looking like a draft wherever it ends up.
🔗 Try it in the demo: buff.ly/mFsNxrS
#CollaboraOnline #OpenSource #Watermark
ALT The Collabora Online Writer interface with the Layout tab open and the Watermark button highlighted. The document, a Product Launch Plan with a purple header, a timeline table and short text sections, has a large diagonal grey DRAFT watermark across the page. A Watermark dialog shows Text: DRAFT, Font: Carlito, Angle: 45°, Transparency: 75%, with Cancel and OK buttons.
Our statement on the Danish government’s Collabora Office pilot: the cBrain F2 integration was completed, reported issues were resolved, and a reorganisation paused the pilot before any evaluation concluded.
Work continues with other Danish authorities.
collaboraonline.com/blog/den…
Moving away from Google Workspace shouldn’t mean rebuilding the automations you rely on.
Collabora Online is adding support for add-ons written in Google Apps Script, so existing workflows can move to a self-hosted, open-source office suite.
Add-ons sit in the new Extensions menu, just like in Google’s editors, and can create charts and pivot tables, format spreadsheets, and work with presentations.
And it’s already happening: the open-source Docs to Markdown add-on now runs in Collabora Online too.
Curious what add-ons can do now? Here’s the full rundown.
🔗 buff.ly/yEgeof8
#CollaboraOnline #OpenSource #Interoperability #DigitalSovereignty
ALT Graphic with the heading “Google Apps Script Add-Ons” and the subheading “now in Collabora Online”. Below it is a screenshot of a spreadsheet in Collabora Online, with an add-on panel open on the side and charts in the document. The Collabora Online logo is in the bottom left corner, on a white and purple background.
Save the date: COOL Days 2027 is coming to Berlin! 🇩🇪 💜
COOL Days is where the Collabora Online community meets in person: partners in hands-on workshops, developers hacking side by side, and the people who use, contribute to and support the project finally sharing a room.
We asked attendees why they keep coming back, and why you should join them next year.
🎥 Take a minute and hear it from them: buff.ly/HL3iz70
See you in Berlin?
🎟️ Save your space: col.la/cooldays
#COOLDays #CollaboraOffice #OpenSource
ALT Collage of attendee headshots speaking into purple microphones at a COOL days — Unfiltered event, centered on the event logo.
Clean Up is a new sidebar deck in #CollaboraOnline Impress, replacing the old Presentation Minimizer wizard.
Scan, review each finding with its slide, and save, then choose Fix or Fix all, with a single undo.
The scan sends the list first and measures images in a lowest-priority idle task, so your typing always goes first.
🔗 See how Clean Up works on our developer blog: buff.ly/XE4NttS
Thank you, Rashesh Padia, for making presentations lighter. 💜
#CollaboraOnline #OpenSource
ALT Graphic announcing a new "Clean Up" feature in Collabora Office Impress that shrinks presentations in one step, showing an editor screenshot with a Clean Up sidebar and a highlighted size reduction from 15.7 MB to 518 KB.
Scaling collaborative editing to thousands of users takes more than standard Kubernetes orchestration. ⚙️📝
All requests for the same document must reach the same pod, even as the cluster scales up and down. COOL Controller, Collabora’s Kubernetes orchestration platform for collaborative editing, is designed to handle this complexity.
From keeping document sessions on the right pod to routing users to the nearest server, it helps organisations run collaborative editing at scale, with document-level monitoring for sysadmins.
Explore the architecture, key capabilities, and deployment scenarios in our white paper.
🔗 buff.ly/iocwjlE
#CollaboraOnline #Kubernetes #OpenSource
That spare Raspberry Pi could be running your own online office suite.
In our step-by-step tutorial, we show you how to get Collabora Online up and running using the official CODE Docker image. No reverse proxy or SQL database needed, making it a straightforward way to try it on your own hardware.
Not using a Pi? The same process works on most x86-64, ARM64 and PPC64 Linux hosts.
🎥 Watch the tutorial: buff.ly/rH7PSMH
#CollaboraOnline #RaspberryPi #SelfHosted #Docker #FOSS
Your pocket office just got an upgrade!
Last week we released #CollaboraOffice for Mobile 26.04. It brings cut, copy, and paste to the formula bar, sheet protection from the tab menu, auto light and dark mode following your system, and more.
Everything runs locally on your device, so you can keep working offline too.
🔗 Swipe through and learn more about what's new: buff.ly/So10SKP
#OpenSource #CollaboraOffice #Android #iOS
Adding AI to your documents shouldn't mean handing your data to third-party clouds.
In our free webinar, we'll explore the optional AI features in Collabora Online, from writing assistance and spreadsheet analysis to troubleshooting formulas and creating presentations.
Discover how to integrate AI on your own terms while maintaining control over your data and digital sovereignty.
📅 Thursday, 22 October 2026
🎙️ Richard Brock & Rashesh Padia
🔗 Save your spot: buff.ly/ZV7Odlr
#CollaboraOnline #DigitalSovereignty #OpenSource
Microsoft 365 is the default in many organisations, and defaults rarely get questioned.
Until a licence renewal or a data sovereignty review brings the decision back to the table.
If you’re considering an open source alternative that runs on your own infrastructure, our white paper offers a side-by-side feature comparison of Collabora Online with Microsoft 365.
Download the white paper.
🔗 buff.ly/ygahbkl
#OpenSource #DigitalSovereignty #CollaboraOnline
Integrators: set up your editor once to work the same across all your devices, or the entire organisation.
Server-side Settings in Collabora Online make this possible for integrators. Through a WOPI-based Settings API, settings are stored on your WOPI host, and sync across devices.
⚙️ For admins, that means one place to roll out custom dictionaries, AutoText and document themes for the whole organisation.
💻️ For users, it means interface preferences, AI assistant, document signing and Zotero credentials get set up once, and are available everywhere.
Our new blog walks integrators through how it works across all the customisable settings categories, step by step.
Get customising:
🎨 buff.ly/ibT98Xb
#CollaboraOnline #OpenSource #WOPI
A month of learning, building, translating, and contributing together. 💜
For 30 days, COOLFest 2026 brought the Collabora Online community together with daily calls, hands-on help, and different ways to get involved - whether through code, translation, or design.
Along the way, newcomers picked up their first Easy Hacks, translators pushed more languages closer to completion, and first-time contributors found their way into the project.
A few highlights:
☑️ 22 new Easy Hacks created for newcomers
☑️ 30% more translations added on Weblate
☑️ 29 first-time GitHub issue reporters
☑️ One contributor went from sign-up to a merged first patch in about a day
A big thank you to everyone who joined, contributed, helped, reviewed, translated, designed, and shared their time throughout COOLFest.
🔗 Read the full wrap-up: buff.ly/AYZmPzy
#CollaboraOnline #OpenSource #Community #COOLFest
That's a wrap on Smart Country Convention (@SmartCountryCon) 2026!
Three days of conversations, connections, and shared ideas on the future of digital sovereignty and open source solutions.
It was a pleasure showcasing Collabora Online, catching up with partners, and sharing stands with Zentrum Digitale Souveränität (ZenDiS) and Open Source Business Alliance (@osballiance).
A big thank you to everyone who stopped by our stands, joined the conversations, and made #SCCON26 such a great experience!
Until next time, Berlin! 💜
#CollaboraOnline #OpenSource #DigitalSovereignty
