LabPal is free and open source software, released under the GNU General Public License. There are many ways you can obtain LabPal.
You can download LabPal as a stand-alone JAR file you can then include into any Java project. Simply download the latest release on GitHub and you're good to go.
Another option is to clone and modify a template project that already integrates LabPal and creates a simple lab instance with dummy experiments.