Diffchecker vs Diffinity

Diffchecker compares text, code, and data in a browser or offline with its desktop app, highlighting additions, removals, and edits. Text comparisons can use side-by-side or unified views, adjustable precision, custom ignore rules, syntax highlighting, real-time editing, and change merging. Listed comparison options also include documents, images, spreadsheets, and folders, with features such as OCR, redlines, formula detection, and batch comparison. Basic is free, but some tools have monthly use limits: unified view and real-time editing each allow five tries, while character-level differences and merge changes each allow ten. Pro + Desktop costs $15 a month per user and includes offline comparisons with desktop apps for Windows, Mac, and Linux. Legal costs $20 a month per user and adds iManage integration and comparison-setting profiles. Enterprise costs $40 a month per user with annual billing, and includes SAML SSO, SCIM provisioning, and dedicated support. Browser comparisons stay in the browser unless saved and shared; Desktop comparisons run locally. The site states browser traffic is TLS-encrypted and its security program is ISO/IEC 27001 certified.

Diffinity is a free Windows utility for comparing and merging text files and folders. It shows line-level differences, highlights changed characters or words, and marks added, removed, and changed lines. A thumbnail view summarizes differences, while search can highlight every instance of a selected word. The maker emphasizes readable source-code comparisons, including improved diffing for C-style code and XML. Editing tools include syntax highlighting, customizable tabs, manual alignment markers, and inline differences that update while typing. Diffinity supports Unicode, detects encoding automatically, and warns when compared files use different encodings. It integrates with Windows Explorer, can run from an external device, and accepts file or folder paths with command-line options, including a folder-diff view. Documentation covers configuration with Git and Perforce Helix P4V. The license allows free personal and commercial use and redistribution of unmodified copies, while prohibiting modification and reverse engineering. Listed release 0.9.6, dated 2026-09-16, requires .NET 8.0.