Auth0 Token Vault handles secure token storage, exchange, and refresh for external providers so you don't have to build it yourself.
Rolling your own OAuth token storage can be a security liability. Token Vault securely stores access and refresh tokens from federated providers and handles exchange and renewal automatically. Connected accounts, refresh exchange, and privileged worker flows included.
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Secure File Transfer for Windows with Cerberus by Redwood
Protect and share files over FTP/S, SFTP, HTTPS and SCP with the #1 rated Windows file transfer server.
Cerberus supports unlimited users and connections on a single IP, with built-in encryption, 2FA, and a browser-based web client — all deployable in under 15 minutes with a 25-day free trial.
Proton’s official Windows desktop client repository
...Its licensing model reflects a mixed approach where the overall project is governed by GPL terms while certain portions are explicitly licensed under MIT, which is common in desktop apps that incorporate reusable libraries or shared components. The project layout suggests a complete desktop application lifecycle, including installer-related directories and structured source organization suitable for enterprise-grade maintenance.