delta

A syntax-aware git merge driver for a growing collection of programming languages and file formats.

Difftastic is a structural diff tool that compares files based on their syntax.

A fast, offline Markdown viewer — syntax highlighting, Mermaid diagrams, callouts, and a live outline.

A C\C++ library and command-line tools for Diff & Patch between binary files or directories(folder); cross-platform; runs fast; create small delta/differential; support large files and limit memory requires when diff & patch.