The Open Quantum Safe (OQS) project has the goal of developing and prototyping quantum-resistant cryptography. More information on OQS can be found on our website: https://openquantumsafe.org/ and on Github at https://github.com/open-quantum-safe/.
liboqs is an open source C library for quantum-resistant cryptographic algorithms. See more about liboqs at https://github.com/open-quantum-safe/liboqs/, including a list of supported algorithms.
liboqs-java is an open source Java wrapper for the liboqs C library for quantum-resistant cryptographic algorithms. Details about liboqs-java can be found in README.md. See in particular limitations on intended use.
The initial release of liboqs-java was released on July 8, 2020. Its release page on GitHub is https://github.com/open-quantum-safe/liboqs-java/releases/tag/0.1.0.