It falls in the same category of agebox, blackbox, sops, git-crypt, but has a friendlier interface and differs is some opinion.
* Stores encrypted secrets with .age extension so that it can be integrated with an wider ecosystem of tooling.
* Separate metadata with checksums and previews with values redated with timestamps for better visibility.
* Automatically adds secrets to .gitignore if present.
* Single command to manage all secrets in repo.
* Supports persistent decryption workflow (plaintext secrets are deleted after operation): encrypt, decrypt, edit, sync, status, diff, clean
* Supports temporary decryption workflow (plaintext secrets are deleted after operation): run, edit --clean, encrypt --clean
* Supports jj and non .git repositories.
* Optimised for teams: my keeping public keys in the repo, admins can grant and revoke access to team members.