Compare software

PSSH vs shmux: catalog facts
PSSH	shmux
Best for: Administrators who need to run commands across a group of SSH servers	Best for: Administrators running the same command across several hosts
Free Free and open source under the BSD-3-Clause license.	Free Free and open source under the BSD 3-Clause license.
macOS, Linux, Command line	Command line
Runs SSH commands across multiple machines Includes parallel copy and synchronization tools All 3 strengths for PSSH Runs SSH commands across multiple machines Includes parallel copy and synchronization tools Provides pslurp for retrieving files	Runs commands on many hosts concurrently Supports rsh, ssh and sh All 3 strengths for shmux Runs commands on many hosts concurrently Supports rsh, ssh and sh Can save output and exit codes for scripts
Requires Python 3.5 or later	Requires access to the target hosts through a supported remote shell
Downloadable app	Downloadable app
Open source	Open source
License: BSD-3-Clause	License: BSD-3-Clause
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Sources for PSSH github.com/lilydjwg/pssh Catalog checked October 8, 2026	Official website Full listing and sources Sources for shmux github.com/shmux/shmux Catalog checked October 8, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.