L2 Editor is a desktop tool for editing Lineage 2 server and client data side by side. It opens L2J Mobius server XML (NPCs, skills, classes, zones, drops, experience), reads and writes the encrypted client data files for skills, NPC names, hunting zones, the minimap, and more, and renders the world map by stitching the client's radar textures and overlaying real zone polygons and NPC spawn points — both of which you can edit by dragging on the map. The NPC editor exposes every field as a structured form with enum dropdowns and includes a 3D point-cloud viewer of the NPC's model decoded straight from the client. The editor is chronicle-aware across 42 builds from Prelude to Orc Village: it decrypts every supported client format, derives which client files exist per chronicle at runtime, and shows a structured drift indicator that names exactly which fields disagree when server and client data drift apart. Built with Tauri, Rust, and React.
I am open to adding support for other server packs as well, if you are interested, send me a message on discord and send me the xml & xsd files
https://github.com/RumDum3/l2-editor