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BlackBoiler vs PDiff

BlackBoiler

blackboiler.com

PDiff

csci.de

Side by side

FigureBlackBoilerPDiff
Price from$104.17/mo—
Free plan——
Free trialYesYes
Open source——
WebYes—
Windows—Yes
macOS—Yes
APIYes—
Self-hosted—Yes
Plans published31
Spec score · Redlining Software8.4 (#2)8.0 (#5)
HeadquartersBrambleton, Virginia, United StatesHamburg, Germany

Plans

BlackBoiler

  • Starter$1,250 a year
  • Pro$3,000 a year
  • EnterprisePriced on request

BlackBoiler pricing →

PDiff

  • PDiff Desktop, PDiff QA, PDiff ProfessionalPriced on request

PDiff pricing →

In their own words

BlackBoiler

BlackBoiler reviews contracts in Microsoft Word by applying an organization’s playbook, previous redlines, approved wording, and examples. It creates first-pass tracked changes and comments; reviewers then accept, modify, reject, escalate, or negotiate each suggestion. Veris provides conversational access to playbooks and contract language within Word. The service covers recurring agreements such as NDAs, service agreements, and subcontracts, plus construction prime contracts, subcontracts, and professional services agreements using AIA, ConsensusDocs, and EJCDC forms. BlackBoiler is aimed at in-house legal teams, law firms, contract managers, and construction legal, commercial, procurement, and project teams. It concentrates on pre-execution review and redlining, while an existing CLM can handle intake, approvals, signatures, and the broader lifecycle. Platforms are web and API. Starter costs $1,250/user/year, Pro costs $3,000/user/year, Enterprise pricing is custom, and a seven-day trial requires a credit card.

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PDiff

PDiff is desktop software for comparing PDF documents and identifying differences in layout, formatting and page breaks. It displays PDFs side by side, synchronizes extracted text with the pages and highlights deviations in both views. Reviewers can navigate differences, mark changes accepted, hide less relevant changes and add comments. Filtering and review tools include exclusion areas, page ranges, text-flow and table tools, replacement rules, comments and OK checkmarks.

PDiff can compare PDFs with DOC/DOCX, RTF, TXT, XLS and other common formats, converting non-PDF files through their native applications. Outputs include tabular, annotated and side-by-side PDFs, XML, CSV, PDiff project files and CLI return codes. PDiff Professional adds GUI batch processing and command-line operation. CSci Computer Science GmbH describes uses including quality assurance, regulatory compliance, contract and legal review, pharmaceutical packaging and technical documents. The software supports Unicode, including Chinese, Japanese, Korean, Arabic and Hebrew. The maker says processing is local and documents are not transferred over the internet. Business customers can request a free full-functionality trial; pricing for editions is on request.

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