UTM.io

UTM.io lets users build, share and sync UTMs with a team, displacing messy spreadsheets and aiming to improve good campaign data in marketing analytics. It is available for limited use with a perpetually free plan, and it is available on a Premium plan, billed annually, that features Shared Workspace Templates, Attributes, & Parameters, Parameter Groupings, Pretty Names, and a UTM Cleaner. And the Enterprise plan offers customization to suit larger companies' needs.