This is a relations picker for Umbraco v7 (tested on 7.6.0). The UI is identical to the Umbraco Content Picker - it just saves as a relation instead.
Once you have installed the package, go to Developer > Data Types and create a new data type to use it. Remember to pick a relation type here.
Show the parent name when viewing the child in a bidrectional relation
Updated to target Umbraco 7.6. Older versions are no longer supported.
Updated to take on the new picker appearance introduced in 7.6.0