APKCrawler: License: GNU Affero General Public License v3.0 License URI: http://www.gnu.org/licenses/agpl.html
The original googleplay-api library files are BSD licensed and can be found at https://github.com/RajatGoyal/googleplay-api. APKCrawler's changes to these googleplay-api libraries (i.e. the derivative work) are licensed under the GNU Affero License v3.