PGX is the core graph technology powering several Oracle products, including:
The present documentation is provided as a reference and may refer to PGX features that are not supported by some of the products that embed PGX. Additionally, different versions of each product can include different versions of PGX and possibly not the latest. Always refer to the specific product documentation (see links above) when in doubt.
Some of the products that include PGX offer a trial download, distributed under the Oracle OTN license:
Standalone OTN Package
PGX used to distribute a "standalone" preview package under OTN license; that package is discontinued and not distributed any more since PGX 19.4.0.