Diffchecker vs Meld

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.

Meld is a free visual diff and merge tool for comparing files, folders, and version-controlled projects. It shows changes as files are edited, provides navigation between differences, and assists with three-way merges, including conflict handling and display of the base version. Folder comparisons identify missing or modified files and allow selected files or folders to be ignored. Meld supports Git, Mercurial, Bazaar, and Subversion, including integration with tools such as git mergetool. Users can define regular-expression filters to ignore matching text, but filtering support is incomplete and filters cannot change the number of lines. The software is available for Linux and Windows. Linux packages are offered by most Linux and Unix distributions and through Flathub; Windows users can download an installer. Windows builds do not support automatic updates or portable installs. macOS is not yet supported, though the project lists semi-official builds and installation options through Homebrew, MacPorts, or Fink. Meld 3.24.0 is listed as the stable release dated 20 June 2026. The plan costs nothing and lists a GPLv2-or-later license, except as noted.