If you're starting a FiveM roleplay server, your framework choice shapes everything that follows — which scripts you can run, how you write resources, and how easy it is to find help. ESX and QBCore are the two dominant choices. Here's how they actually differ.
The short answer
- Choose ESX if you want the largest library of existing scripts, the most tutorials, and a simpler, battle-tested core.
- Choose QBCore if you want a more modern, feature-rich base with richer player metadata and a tighter built-in roleplay feature set.
- Consider Qbox — a community-maintained QBCore fork — if you want QBCore's model with cleaner, more actively maintained code.
Architecture and design
Both frameworks are written in Lua and follow the same broad pattern: a core resource manages players, money, jobs, and shared exports that other resources call. ESX has been around longer and keeps its core relatively lean — much of the functionality lives in separate esx_* resources. QBCore bundles more into the core and ships with richer player metadata (hunger, thirst, stress, licenses) and built-in systems that ESX typically delegates to add-ons.
Script and resource availability
ESX has the larger ecosystem by volume — years of free and paid scripts target it, so you'll find more ready-made resources and more forum answers. QBCore's library has grown rapidly and many modern, polished scripts now release for it first. Increasingly, popular scripts ship for both, and shared libraries like ox_lib and ox_inventory work across frameworks.
Performance
Framework choice is rarely your performance bottleneck — poorly written individual resources are. Both ESX and QBCore can run a smooth server or a laggy one depending on the scripts you install. Watch resource monitor (resmon) per resource rather than blaming the framework. Using modern shared libraries and avoiding blocking loops matters far more than ESX vs QBCore.
Developer experience
ESX's longevity means more existing examples to copy, but some older patterns linger. QBCore's APIs feel more modern and its metadata model is convenient for roleplay features. Whichever you pick, an AI assistant with framework-aware tooling removes most of the friction — it knows the correct exports and patterns for each. See the best AI tools for FiveM development.
Can you switch later?
Migrating an established server between frameworks is a significant undertaking — player data schemas, every installed script, and your custom resources all assume one framework's APIs. Choose deliberately up front. If you're unsure, prototype a small server with each and see which community and scripts fit your vision.