Best alternatives to Vitrin OS in 2026

As AI agents start doing more on a computer — clicking buttons, filling forms, browsing the web — the obvious risk is an agent doing something it shouldn't with full access to your screen and apps. Vitrin OS is built to solve exactly that: it gives each application its own sealed sandbox, requires explicit permission for anything an agent tries to do, and — crucially — any physical keyboard or mouse input from you instantly overrides and interrupts whatever the agent is doing. It's an open-source project (Apache-2.0 for protocols/SDKs, MPL-2.0 for the core implementation, CC-BY-4.0 for documentation) built around a capability-based security model, using nested Wayland shims for per-application isolation on Linux. It ships SDKs in Rust, C, and Python, includes kernel-rendered consent prompts and an emergency stop that instantly revokes all agent authority, and Phase 1 already has working integrations for Firefox and terminal apps.