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Head-to-head · Diff and Merge Tools

P4Merge vs UltraCompare

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score P4Merge #3 in Diff and Merge Tools 9.1/10 Free plan Free plan✓ 4 of 4 features Visit P4Merge

P4Merge leads on 1 check, UltraCompare on 0, and 4 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreP4Merge · 9.1/10
  • Free planonly P4Merge

P4Merge scores higher on our rubric for diff and merge tools: 9.1 against 8.6 out of 10; our editors rank them #3 and #7.

P4Merge offers free plan; UltraCompare doesn't.

P4Merge is the better fit for free users needing mature core merge workflows. UltraCompare is the better fit for enterprise users needing broad integrations and formats.

  • P4Merge fits best

    Free users needing mature core merge workflows

  • UltraCompare fits best

    Enterprise users needing broad integrations and formats

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature P4Merge 9.1/10 Visit ↗ UltraCompare 8.6/10 Visit ↗
At a glance
Editor score 9.1 8.6
Ranking #3 in Diff and Merge Tools #7 in Diff and Merge Tools
Best for Free users needing mature core merge workflows Enterprise users needing broad integrations and formats
Pricing model Free Paid
Starting price Free plan $99.95/user/yr
Free plan ✓ (best) —
Free trial — —
Deployment Desktop Desktop
Platforms Windows, macOS, Linux Windows, macOS, Linux
Support Docs Email, Docs
Integrations 3 integrations 7 integrations
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features P4Merge 4/4 · UltraCompare 4/4
Three-way merge ✓ ✓
Folder comparison ✓ ✓
Git integration ✓ ✓
Syntax highlighting ✓ ✓
Specs
Platform support Desktop Desktop
Merge scope Three_way Three_way
Our review
Pros
  • Free on Windows, macOS, and Linux
  • Three-way merging with a common base
  • Supports text, folders, images, Git, and Perforce workflows
  • Three-way comparison and merging for files and folders
  • Git, Subversion, CVS, FTP, and SFTP integrations
  • Supports documents, archives, remote files, and large files
Cons
  • Desktop-focused rather than a broader collaboration platform
  • Distributed with the P4V installation package
  • Paid tiers are not part of its published offering
  • No free plan
  • Starts at $99.95 per user annually
  • Sold through UltraEdit bundles rather than a standalone plan
Our verdict

P4Merge is a free desktop diff and merge tool from Perforce Software for developers and designers. It compares text and image files, supports three-way merging with a common base, and compares folders to track changes between directories.…

Read the review →

UltraCompare is a desktop diff and merge application for developers, IT administrators, QA teams, technical writers, and business users. It compares and merges text files, folders, binary files, Word documents, PDFs, spreadsheets,…

Read the review →
  1. P4MergeDiff and Merge Tools 9.1Free plan
  2. UltraCompareDiff and Merge Tools 8.6Paid

Strengths and trade-offs

  • P4Merge — where it wins

    • Free on Windows, macOS, and Linux
    • Three-way merging with a common base
    • Supports text, folders, images, Git, and Perforce workflows

    Where it doesn't

    • Desktop-focused rather than a broader collaboration platform
    • Distributed with the P4V installation package
    • Paid tiers are not part of its published offering
  • UltraCompare — where it wins

    • Three-way comparison and merging for files and folders
    • Git, Subversion, CVS, FTP, and SFTP integrations
    • Supports documents, archives, remote files, and large files

    Where it doesn't

    • No free plan
    • Starts at $99.95 per user annually
    • Sold through UltraEdit bundles rather than a standalone plan

More comparisons

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update