Raid OS is an independent, unofficial companion for Escape from Tarkov, designed for Windows 10 and 11. It runs alongside the game without modifying its files or performing actions for the player, bringing useful raid information together in a separate window or overlay.

The app helps players plan and track quests, including automatically synced story progress and a checklist for collecting items needed for the Kappa container. Interactive maps show quest locations and routes, while a screenshot-based mini-map supports navigation. Players can check item prices from the flea market and traders, compare ammunition performance against armor, and review boss locations, health, equipment, and potential loot.

Raid OS provides separate quest, item, and price data for PvP, PvE, and Season modes. Its squad features help friends prioritize maps based on shared objectives and identify items teammates need. Account syncing carries progress, settings, and the Kappa checklist across PC and the website. iOS and Android versions are planned but are not yet available. Premium subscriptions and a friend-invitation program are also offered.