HostedBeans's core features are provided by Beancount and Fava.
HostedBeans' rendered logo comes from Openmoji.
HostedBeans's Web application was built with Create React App and many open source projects:
More detail can be found in comments of distributed JavaScript and CSS files.
HostedBeans's backend was built with Go and many open source projects:
HostedBeans also uses those open source projects on the production environment: