XRMToolBox
A free, open-source Windows application hosting hundreds of community-built tools for Dataverse administration and development.
XRMToolBox is a free, open-source Windows desktop application that hosts hundreds of community-built plug-in tools for Dataverse (and Dynamics 365) administration and development. Essential tools include FetchXML Builder (visual query construction), Plugin Trace Viewer (debugging server-side code), Bulk Data Updater (mass record changes), Solution Compare (diff between solutions), Ribbon Workbench (command-bar customisation), and dozens more. Each tool is community-maintained and installable from the in-app marketplace. Together they fill the gaps in Microsoft's official tooling — almost every serious Dataverse practitioner uses XRMToolBox daily. Free, MIT-licensed, with active community support.