When comparing StackExchange Blackbox vs Conjur, the Slant community recommends Conjur for most people. In the question“What are the best shared secret managers?” Conjur is ranked 5th while StackExchange Blackbox is ranked 7th. The most important reason people chose Conjur is:
If a company uses more than a cloud service on which they run their platform, you don't need to use a different service to manage secrets for each of them, instead Conjur bundles all of them in a simple to use user interface.
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Pros
Pro Easily share secrets with other team members
Since the secrets file is stored in the remote VCS server, anyone that has access to it (team members) also have access to the secrets file.
Pro Free and open source
StackExchange Blackbox is free and open source. It's released under the MIT license and its source code is freely available on GitHub.
Pro Uses a VCS repo to store the secrets
SE Blackbox works with Git, Mercurial, Subversion and Perforce to store encrypted secrets file in a repository. Files are automatically encrypted and decrypted using GNU Privacy Guard.
Pro Can bundle different cloud services into a single interface
If a company uses more than a cloud service on which they run their platform, you don't need to use a different service to manage secrets for each of them, instead Conjur bundles all of them in a simple to use user interface.
Pro Easy setup
Setting up Conjur is pretty easy. All a user has to do is install the client, set up an account and through the guidance of the user interface, choose the operations with which the developers will use to control their data and servers.
Pro Provides tools for monitoring activity
Conjur provides detailed information on activity of all users and changes within the secret storage. It also provides graphs and comes with a warning system to make monitoring easier.