About Viper Development
We build premium, escrow-protected FiveM scripts for QBCore and ESX Legacy roleplay servers.
Viper Development is a FiveM resource studio. We design and maintain Lua scripts for GTA V roleplay servers running QBCore and ESX Legacy — from multijob systems and safezones to player-owned shops. Every resource is written to install cleanly, run without dragging your server's performance down, and stay maintained after release.
What we build
Our catalogue focuses on systems that servers actually use every day. The Viper Multijob menu lets players hold and switch between several jobs with grade and salary display, duty toggling, and server-side validation so nobody can switch into a job they don't own. Each script is built on the ox stack — ox_lib, ox_inventory and ox_target — with oxmysql for persistence.
Every resource ships with dual framework support. The same script detects whether your server runs QBCore or ESX Legacy and adapts automatically, so you don't need a separate build or a converted version.
How our scripts are protected
All resources use Cfx.re asset escrow. The core logic is protected, while the config file and locale files stay fully open and editable — so you can retheme the UI, change keybinds, adjust jobs and translate the interface without needing access to the internals.
Every script includes four languages out of the box: English, Spanish, French and German.
How delivery works
Purchases run through Tebex, who act as our reseller and Merchant of Record and handle payment, invoicing and refunds. You sign in with your FiveM account at checkout, and the resource is added straight to your Cfx.re Portal — usually within seconds of payment clearing. Updates are free and arrive through the same portal.
Support and documentation
Every script comes with written installation and configuration documentation covering setup, exports, config options and common issues. If something isn't working, you can open a ticket in our Discord and speak to us directly rather than waiting on an email queue.
Where to find us
- Browse the full script catalogue on this site
- Read installation guides in our documentation
- Get help or report a bug in our Discord
- Access purchased resources through the Cfx.re Portal
Viper Development is an independent creator of FiveM resources. We are not affiliated with or endorsed by Rockstar North, Take-Two Interactive, or Cfx.re. Purchases are handled by Tebex Limited as Merchant of Record. You can access purchased assets at the Cfx.re Portal.