Get the version control and collaboration of Overleaf, but for Microsoft Word

Simul is a version control and collaboration tool for Microsoft Word. It's used by the world's leading universities, researchers and publishers to collaborate on scientific papers, book manuscripts and more.

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Used in thousands of organisations worldwide

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How It Works

Upload your document and invite others to collaborate on it

Upload a Word document from your computer or cloud services like Dropbox, OneDrive & SharePoint and invite people to collaborate on it.

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Automatically create versions each time the document is changed

Collaborators can open the latest version of a document in Word or Word Online in just 1 click, and each time they make changes it's automatically saved as a new version.


Here's how it works:

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Open the latest version in 1 click

Collaborators can access and open the latest version of a document in just 1 click.

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Make edits in Word or Word Online

Simul integrates directly with Word and Word Online, so collaborators can make edits to a document in their preferred environment.

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Automatically create a new version

When someone clicks 'Save' in Word or Word Online, a new version is automatically created in Simul and instantly available to all collaborators to continue working on.

See what changed between each version

Simul makes it easy to see what changed between each version, regardless of whether tracked changes were turned on or not.

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Automatically create branches so people can work at the same time

Simul will automatically detect when multiple people are working on the document at the same time and create separate branches for each version so people aren’t overwriting each others work

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Merge Microsoft Word Documents Tool

Merge branches and handle conflicts with ease

Merge branches in 1 click, and each authors changes are marked up as tracked changes in Word, allowing you to easily identify the differences, accept or reject changes, and keep work moving forward.

See the full history of a document

See every version of a document - including what changed, who changed it and when - in a simple interface.

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Access content from previous versions

With just 1 click, you can revert back to a previous version of your document or open an old version and copy and paste content out of it.

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Get approval, publish as PDF, export to cloud file storage & more

When you're finished collaborating on your document, you can use Simul's approval workflow to easily get sign off from everybody and then export your document as a PDF or DOCX to your computer or cloud storage service.

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“Simul allows anyone on our team to access the latest version of a document instantly. It automatically creates versions, allows us to compare them to see what changed, and gives us a full version history of the document. It’s made writing research reports so much easier.”

Nikolas UCLA Version Control Word

Nikolas Balanis - Cancer Researcher, UCLA

Get Started For Free

It's free to collaborate on 1 document, and paid plans start at just $15 per month.