Side by side

Diff Doc vs Redline Compare

Both stand on document comparison software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

Diff Doc

Free trial Windows

Diff Doc combines broad file-format coverage with folder comparison, reports, and automation features in a Windows desktop product. It is paid software, but the maker offers a 30-day trial and money-back guarantee on purchases.

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Redline Compare

Free plan Web

Redline Compare centers on comparing document versions and highlighting changes. Its free plan has a 50-comparison limit, while Pro is listed at $4.99/month for unlimited redlines and priority processing.

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The facts

	Diff Doc	Redline Compare
Free plan	A free trial	Yes
Open source	Not published	Not published
Runs on	Windows	Web
Lowest paid plan	Diff Doc Professional: $499.95, paid once	Pro: $4.99 a month
Plans published	1	2
Maker	Not published	Not published
Website	softinterface.com	redlinecompare.com
On document comparison software	#18 of 25	#14 of 25

Diff Doc: what it does well

Compares PDF, Office, and several other file formats.
Offers word- or letter-level comparison views.
Can compare folders before detailed file review.
Supports command-line and scheduled comparisons.
Privacy Mode prevents cross-session loading or saving of paths.

What to know first

No free plan.
Paid; pricing starts at $299.95.
Listed for Windows; Mac use requires Parallels or VMware Fusion.
Free trial lasts 30 days.

Redline Compare: what it does well

Compares PDF and DOCX files.
Returns redlined results in seconds, according to the site.
Free plan includes 50 document comparisons.
Pro includes unlimited redlines and priority processing.
Documents are processed with enterprise-grade encryption, according to the site.

What to know first

No document storage.
No user management systems.
No collaboration tools.
Free plan is limited to 50 comparisons.

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