A sheets add-on to help manage, create and deploy shared parameters for Autodesk Revit.
BIMsets Cloud Writer is designed to streamline the process of managing shared parameters for the Autodesk Revit platform. The add-on allows users to import existing shared parameter files, edit, append and export new files that can be used in the Revit application. The current method within Revit to manage these parameters is quite time consuming and does not allow bulk editing or modification. Additionally all edits are required to be performed inside the application. BIMsets Cloud Writer removes these limits by allowing the shared parameter file to be edited outside of the Revit platform. Additionally the file can be accessed from anywhere via Google Drive and Google Sheets, adding the ability to collaborate across a team, and to have access to built in version control for any changes that are made. The Sheets interface also lends itself to being able to manage multiple files at the same time via additional tabs in the instance that you have client specific requirements that require multiple files.
There's more information available on the BIM Source website.
Credit: Luke Johnson's What Revit Wants blog.