A simple localization extension for WPF.
Nuget
http://www.nuget.org/packages/Localization4WPF/
Sample
<Window x:Class="DemoApplication.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:loc4wpf="http://schemas.denkberg.com/Localization4WPF/"
Title="MainWindow" Height="350" Width="525">
<Window.Resources>
<loc4wpf:LocalizationConverter x:Key="LocalizationConverter"/>
</Window.Resources>
<Grid>
<!-- Using Markup Extension -->
<TextBlock Text="{loc4wpf:LocalizeString Key=MY_KEY}"/>
<!-- Using a Converter (The BindedText is actually the Key of the resource string)-->
<TextBlock Text="{Binding Path=BindedText, Converter={StaticResource LocalizationConverter}}"/>
</Grid>
</Window>