croc

croc is a peer-to-peer file transfer CLI for sending files, folders, or short text between two machines using a shared code phrase and a relay for rendezvous. It covers ad hoc cross-machine transfers when SSH, shared storage, or a longer-lived sync setup is not the right fit.

• Send files, folders, or short text from one machine to another with end-to-end encryption and resumable transfers.
• Stream data from stdin into a transfer or receive directly to stdout, which helps move artifacts through shell pipelines.
• Run your own relay and relay password so transfers stay on infrastructure you control instead of the default public relay.

• Non-interactive flags such as --yes, --overwrite, --stdout, --out, --relay, and --text make scripted transfers feasible.
• There is no user-facing JSON or other structured output mode, so follow-up parsing relies on human-readable logs and exit status.
• Best fit is artifact handoff between machines or sessions; coordination still depends on both sides sharing a code phrase and running paired sender and receiver commands.

• On Linux and macOS, secure usage expects the secret in CROC_SECRET; passing it on the command line requires opting back into classic mode with an explicit local-security tradeoff.
• Unattended workflows are narrower than tools like scp or object-store CLIs because a receiver still needs the matching code phrase and a live transfer session.