Oracle APEX is a low-code development environment for building browser-based applications on the Oracle Database. Oracle describes APEX as a no-cost feature of the Oracle Database, available with all supported editions, and it is distributed under the Oracle Free Use Terms rather than an open-source licence. APEX is also offered as a managed service on Oracle Cloud Infrastructure, which has its own pricing.
Oracle Corporation is a US company whose principal executive offices are in Austin, Texas. Organisations can run APEX on a database they operate themselves, which keeps the data under their own control, or on Oracle Cloud, where the customer chooses the region. The pages reviewed did not confirm which Oracle Cloud regions offer APEX, so European organisations should check EU region availability and Oracle's data-processing terms. Because Oracle is a US group, US legal access rules can apply to data held by its cloud services. The product is not open source.