Merge Microsoft Word Documents with Ease

Simul Docs is a collaboration tool for Microsoft Word that makes it easy to merge Word documents, see what changed between versions, and move work forward.

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Used in thousands of organisations worldwide

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How merging documents works

Simul makes it easy to merge Microsoft Word documents. Here's how it works:

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1. Upload the original document

Upload the original document from your computer or from cloud storage services like Sharepoint, OneDrive, Dropbox, Box or Google Drive.

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2. Upload the comparison document

Upload the comparison document to Simul by selecting 'Import New Version' and then selecting the comparison document from your computer or cloud storage provider. Tick the box to 'Create as branch' and this will create a new version of the document in Simul.

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3. Merge the documents in 1 click

Simul's 1-click merge functionality automatically merges the two versions together and creates a 3rd version containing all the content from both the original and the comparison version.

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4. Review the changes

Click 'Open in Word' and the merged document will automatically open in Word or Word Online with each authors changes marked up as tracked changes in Word, allowing you to easily identify the differences, fix conflicts, and keep moving forward.

What is Simul?

More than just a document merging tool, Simul is a fully-featured version control and collaboration tool for Microsoft Word documents.

By using Simul, you get the following benefits:

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Easily access the latest version

All collaborators can easily find and open the latest version of the document in 1 click.

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Work on documents simultaneously

Multiple people can work on a document at the same time & Simul will automatically create separate ‘branches’ for each version so people aren’t overwriting each others work.

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Easily see what changed

Easily compare different versions of a document - regardless of whether tracked changes were turned on or not - so you always know what changed, who changed it, and when.

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Merge changes in 1 click

Merge versions in 1 click, and each authors changes are marked up as tracked changes in Word, allowing you to easily identify the differences.

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See the full history of changes

Easily go back over a document and see what changed, when it changed and who changed it.

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Easily revert to old versions

Easily revert to a previous version of the document, or take content from a previous version to add to the latest.


“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

Get Started For Free

See how Simul can help you with a 14 day free trial, and paid plans start at just $15 per month.