Avalonia/samples/ControlCatalog/Pages/ItemsRepeaterPage.xaml

<UserControl xmlns="https://github.com/avaloniaui"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             x:Class="ControlCatalog.Pages.ItemsRepeaterPage">
    <ScrollViewer HorizontalScrollBarVisibility="Disabled">
        <ItemsRepeater Items="{Binding}"/>
    </ScrollViewer>
</UserControl>