Diffchecker vs Altova DiffDog

Diffchecker8.2Visit Altova DiffDog7.7Visit

Higher score Diffchecker #11 in Diff and Merge Tools 8.2/10 Free plan · 14-day trial Free planFree trial✓ 3 of 4 features Visit Diffchecker

vs

Altova DiffDog #16 in Diff and Merge Tools 7.7/10 30-day trial Free trial✓ 4 of 4 features Visit Altova DiffDog

• Diffchecker fits best

  Users comparing documents, images, and spreadsheets

• Altova DiffDog fits best

  XML and database comparison specialists

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Side by side

Feature	Diffchecker 8.2/10 Visit ↗	Altova DiffDog 7.7/10 Visit ↗
At a glance
Editor score	8.2	7.7
Ranking	#11 in Diff and Merge Tools	#16 in Diff and Merge Tools
Best for	Users comparing documents, images, and spreadsheets	XML and database comparison specialists
Pricing model	Free plan + paid	Paid
Starting price	$15/user/mo	—
Free plan	✓ (best)	—
Free trial	14 days	30 days
Free trial length	14 days · no card needed	30 days
Deployment	Cloud, Desktop	Desktop
Platforms	Web, Windows, macOS, Linux	Windows
Support	Tickets	Tickets, Docs, Community
Integrations	3 integrations	3 integrations
Built for	Solo, Small business, Mid-market, Enterprise	Small business, Mid-market, Enterprise
Features Diffchecker 3/4 · Altova DiffDog 4/4
Three-way merge	Not checked yet	✓ (best)
Folder comparison	✓	✓
Git integration	✓	✓
Syntax highlighting	✓	✓
Specs
Platform support	Desktop_web	Desktop
Merge scope	Two_way	Three_way
Our review
Pros	Compares text, documents, images, spreadsheets, and folders Runs offline on Windows, macOS, and Linux Includes Git, iManage, Microsoft Word, and API support	XML-aware comparison plus XML Schema and database support Two-way and three-way merging with folder synchronization Git integration and diff reports in text, XML, or HTML
Cons	Verified merge scope is two-way Paid plans start at $15 per user per month Advanced API usage requires a separate paid plan	Windows-only desktop coverage No free plan; the product is paid Enterprise-only support for Word, CSV, and database comparisons
Our verdict	Diffchecker is a web and desktop comparison tool for developers, legal teams, writers, editors, and operations users. It compares text, source code, PDF, Word, and PowerPoint files, images, spreadsheets, and folders. Side-by-side and… Read the review →	Altova DiffDog is a Windows desktop application for developers and IT professionals who need to compare, merge, and synchronize files or folders. Its scope covers text and source-code files, XML and JSON documents, folders, directories,… Read the review →

Strengths and trade-offs

• Diffchecker — where it wins

  • Compares text, documents, images, spreadsheets, and folders
  • Runs offline on Windows, macOS, and Linux
  • Includes Git, iManage, Microsoft Word, and API support

  Where it doesn't

  • Verified merge scope is two-way
  • Paid plans start at $15 per user per month
  • Advanced API usage requires a separate paid plan

• Altova DiffDog — where it wins

  • XML-aware comparison plus XML Schema and database support
  • Two-way and three-way merging with folder synchronization
  • Git integration and diff reports in text, XML, or HTML

  Where it doesn't

  • Windows-only desktop coverage
  • No free plan; the product is paid
  • Enterprise-only support for Word, CSV, and database comparisons

• Diffchecker8.2/10 · Free plan · 14-day trial

  A broad comparison suite with desktop coverage, API access, and two-way merge workflows.

  Visit DiffcheckerFull verdict →
• Altova DiffDog7.7/10 · 30-day trial

  A specialist Windows diff tool for XML, database, folder, and three-way comparisons.

  Visit Altova DiffDogFull verdict →