Private content is a very simple node access module that gives each node a 'private' checkbox. If it's set, the node can only be seen by the node author, or users with the 'access private content' permission. The module is particularly recommended for simpler sites, for example to create a members-only area.
The module includes per-content type defaults, actions integration and views integration.
D7 version
The D7 version is "Private". The module was renamed for D8 because private is a reserved word in PHP so cannot be used as a name.
Related modules
If you need a more sophisticated access control module, try nodeaccess.
Short name
private_content
Supporting organizations
Security fix and port to D8