I am happy to share the information with all of you regarding Oracle 18c XE free use. Oracle Database Express Edition (XE) is a community supported edition of the Oracle Database family. Developers love to work on Windows PC. Now every single one of them can have a fully functioning Oracle database for Developing new application, prototyping, testing, deploying, learning Oracle 18c, exploring, educating, … the list goes on… on their own PC for absolutely free of cost.
To use this license, you must agree to the Oracle Technology Network Developer License Terms for Oracle Database Express Edition
It's support Oracle almost all the features for development. Oracle Database features, Oracle Database options, and Oracle management packs, and their availability in Oracle Database Express Edition.
https://www.oracle.com/technetwork/database/database-technologies/express-edition/downloads/index.html