Ranked in these QuestionsQuestion Ranking
Pro Can audit sessions
Keybox can audit sessions on a historical basis, compared to Userify which requires that you use other tools (like auditd and greylog2) to do that.
Pro Free and open source
SSH KeyBox is free and open source. The source code is hosted on GitHub and it's released under the Apache 2.0 License.
Pro Acts as a bastion host
The ssh KeyBox server is its own bastion host.
Con Keybox doesn't use real SSH, so things like remote automation and scp/sftp aren't possible
You may be able to manage those out of band, however, but they're not possible directly in the browser from your OpenSSH client.
Con Runs through the browser
KeyBox is browser-based and is accessed through a web browser. This adds some insecurity and potential attack vectors to the platform.