Hacktoberfest 2021 is a month-long celebration of open source software where participants can contribute to participating open-source projects hosted across GitHub, with Alpaca actively seeking contributions and offering swag for those who meet the contribution criteria. The first 50,000 participants will receive a Hacktoberfest T-shirt, while the first 20 contributors to successfully merged pull requests to Alpaca's open source projects and community-built SDKs will also receive an Alpaca T-shirt. By contributing to Alpaca's open-source projects, participants are helping the entire community become more efficient and productive, and empowering developers worldwide to build fintech apps.