# WixToolset.BootstrapperApplications WixToolset.BootstrapperApplications is a WiX extension that provides the WiX bootstrapper applications: - WixStdBA ([WixStandardBootstrapperApplication](https://wixtoolset.org/docs/schema/bal/wixstandardbootstrapperapplication/)), a bootstrapper application with support for custom themes - WixIuiBA ([WixInternalUIBootstrapperApplication](https://wixtoolset.org/docs/schema/bal/wixinternaluibootstrapperapplication/)), a bootstrapper application for showing internal UI of Windows Installer packages - WixPreqBA ([WixPrerequisiteBootstrapperApplication](https://wixtoolset.org/docs/schema/bal/wixprerequisitebootstrapperapplication/)), a secondary bootstrapper application for bootstrapping the prerequisites needed for a primary bootstrapper application