If you've browsed modern FiveM scripts, you've seen the dependencies list ask for ox_lib, ox_inventory, or ox_target. These three resources — from the Overextended team — have become the backbone of contemporary FiveM development. Understanding what each does explains why so many quality scripts depend on them.
Why "the ox stack" exists
Older FiveM development had a problem: every script reinvented common tools. One script had its own notification system, another had a different one, a third had its own way of drawing menus. The result was bloat, inconsistency, and wasted performance.
The ox stack solves this by providing a shared, high-performance set of building blocks that scripts can all use. Instead of ten different menu systems, everyone uses one good one. This means better performance, a consistent player experience, and easier development.
ox_lib: the shared toolkit
ox_lib is a library of common functionality that other scripts build on. It provides:
- UI elements — notifications, context menus, input dialogs, progress bars — all clean and consistent
- Callbacks — a tidy way for client and server to request data from each other
- Utility functions — caching, math, zones, and more
- A points and zones system for detecting when players enter areas
On its own, ox_lib doesn't do much visible — it's a dependency other scripts use. But because so many modern scripts require it, it's usually the first thing you install. It's extremely lightweight and well-optimized.
ox_inventory: the modern inventory
ox_inventory has become the go-to inventory system for both QBCore and ESX servers. It's a complete, slot-based inventory that handles:
- Items, weapons, and stacking
- Shops, stashes, and player-to-player trading
- Item metadata (durability, serial numbers, custom data)
- Strong server-side validation to prevent duping and exploits
It's popular because it's performant, secure, and feature-complete. A huge number of other scripts integrate with it directly, so having it installed opens up a large ecosystem of compatible resources.
ox_target: eye-based interaction
ox_target replaces clunky "press E when near this spot" prompts with a clean targeting system — the player brings up an eye/cursor and interacts with specific objects, entities, or zones. It's the interaction layer for opening doors, talking to NPCs, accessing vehicle trunks, and countless other actions.
Modern scripts often expect ox_target because it gives players a consistent, polished way to interact with the world, rather than every script inventing its own prompt.
Do you have to use the ox stack?
Not strictly — some servers use qb-inventory, qb-target, or other systems. But the momentum is firmly behind ox. If you're building a new server, starting with the ox stack means:
- The widest compatibility with modern scripts
- Better baseline performance
- A consistent experience for players
- Active maintenance from the Overextended team
How this affects buying scripts
When you buy a script, check its dependencies. A script built for the ox stack will list ox_lib and possibly ox_inventory or ox_target. If your server uses these (and most modern ones do), it'll integrate cleanly. If a script uses a completely different, older set of dependencies, factor in the extra setup.
At Viper Development, our scripts are built on the modern ox stack — ox_lib, ox_inventory, and ox_target — so they integrate cleanly into contemporary QBCore and ESX servers and perform well. Browse our FiveM scripts →