Lots of folks using WordPress sites with multiple authors may run into this problem. You want to attribute correct credit to the writer/author of the article, but not give out access to your WordPress install. Maybe because it’s a one-time article, maybe not, who cares?
If the author of your blog entry is different than your logged in user and you don’t want to have to create a separate user account, just add the name as you’d like it to appear to the Custom Author Byline panel below the post/page editor (custom post types can be added too). Easy!
For more information on the WordPress Custom Author Byline plugin and how to use it, visit the information page at the preceding link.
Coming in Next Release
Ability to add custom post type support without having to edit the plugin or your functions file
I've been using this one for years, and should have left a positive review long before. It may seem a bit worrying that it doesn't look like it's been touched in a while. I think the developer should come back and give it a tweak or version update, but really, it still works very good with the latest WP, and it's really useful for sites where you want multiple authors but not manage giving people their own accounts.
I used this plugin so that I don't have to create any extra users for the articles that others write, instead I can give their name as well as a link to the source. This doesn't show any author Image, neither does it claim to do so. I am happy with this plugin, Thanks a lot.
Added ability to set a custom URI for your author in the post editor at the request of plugin users. 🙂
Also added support for pages (automatic) and custom post types (not automatic, for advanced users).
Renamed function(s) to eliminate conflict with some other plugins.
Brand new release. Props to @ron_r for giving me a hand with a filter/function.