RustDiff

RustDiff is a desktop application that compares two JSON or XML documents and highlights the differences in a clear, visual way. It is written in Rust and built on top of GTK4 and Libadwaita, so it feels native on the GNOME desktop.

Main features:

• Semantic diff for JSON (key by key) and XML (nodes, attributes and text).
• Split editor with syntax highlighting and automatic pretty-print.
• Inline and full-line highlighting for added, removed and changed items.
• Filterable table of differences, clickable to jump to the exact location.
• Export to plain text or styled HTML.
• Session history backed by SQLite with per-entry and bulk deletion.
• Ctrl + mouse wheel zoom on both editors, dark mode follows the system.