Xeno
Xeno is a free external executor that started as a C++ learning project and turned into one of the go-to options for people who want something simple and keyless. It works by overwriting the bytecode of a Roblox core script instead of injecting directly, which is a different approach from most executors.
It's listed on WeAreDevs and the original codebase is open-source, which gives it some credibility in a scene full of sketchy downloads. UNC sits at 84%, which is solid for an external executor but means some more advanced scripts won't work on it. For basic stuff and casual use, it handles things well.
As of April 6, 2026, Xeno is working on version 1.3.30. It's usually one of the first executors to update after Roblox patches.
Since it's external, you won't get the same level of script support as internal executors like Velocity. But if you want something lightweight that just works without dealing with key systems, Xeno is a solid pick.
Script Compatibility
External executors typically score lower on UNC since they can't access all the same APIs as internal ones. 84% is good for an external, but some complex scripts may not work.
Features
Our Take
Xeno does what it's supposed to do. It's free, keyless, and updates fast. The lower UNC score compared to internal executors means you'll run into scripts that don't work, but for most popular game scripts it's fine. The open-source background and WeAreDevs listing make it one of the safer downloads in the scene. Good entry point if you're just getting started.