SkySend

Minimalist, end-to-end encrypted, self-hostable file and note sharing. Zero-knowledge server - files and notes are encrypted in the browser before upload. No accounts, no telemetry, built for speed and security. Maintained by Skyfay on GitHub, where it has earned 279 stars from the community.

It's actively developed around aes-256-gcm, docker, encryption, and is a solid reference for anyone building with these tools.