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SPECIFICTION
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LegalOn vs PDiff

LegalOn

legalontech.com

PDiff

csci.de

Side by side

FigureLegalOnPDiff
Price from——
Free plan——
Free trialYesYes
Open source——
WebYes—
Windows—Yes
macOS—Yes
Self-hosted—Yes
Plans published31
Spec score · Redlining Software7.3 (#9)8.0 (#5)
HeadquartersTokyo and San FranciscoHamburg, Germany
SecurityLegalOn is SOC 2 Type II certified and certified under ISO/IEC 27001:2022 and ISO/IEC 27017:2015.The maker says document processing occurs locally, documents are not transmitted over the internet, and the software can operate offline by arrangement.
SupportThe Contracting Suite includes team training, onboarding, and dedicated customer support; every plan includes guided onboarding, unlimited office hours, and AI training sessions.The maker invites trial users who want to continue to contact it for an offer for a full version tailored to their requirements.

Plans

LegalOn

  • Contracting SuitePriced on request
  • Core ReviewPriced on request
  • Productivity SuitePriced on request

LegalOn pricing →

PDiff

  • PDiff Desktop, PDiff QA, PDiff ProfessionalPriced on request

PDiff pricing →

In their own words

LegalOn

LegalOn is a web and extension platform for everyday in-house legal work, covering contract intake, review, drafting, and matter information. Its AI flags contract risks, creates redlines, and applies positions from playbooks. LegalOn Assistant answers legal questions, summarizes agreements, drafts fallback language, and surfaces insights across contracts and matters. More than 135 attorney-built playbooks cover common commercial contracts, and custom playbooks are supported. Vault extracts obligations, dates, counterparties, and risk terms from contract portfolios for search. Matter Management centralizes intake and triage, tracks owners and deadlines, and shows workload visibility. Connections include Microsoft Word, email, Slack, and Microsoft Teams. LegalOn lists SOC 2 Type II, ISO/IEC 27001:2022, and ISO/IEC 27017:2015 certifications, encryption in transit and at rest, and no use of customer data to train third-party foundational models. Pricing is on request, with a 14-day trial and no free plan.

Visit legalontech.com

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.

Visit csci.de