I'm delighted to announce L4D Launcher version 1.5!
Left 4 Dead 2 support has been long awaited and is finally here. Whether Steam is installed or not, you are able to launch Left 4 Dead and Left 4 Dead 2 network games—even using custom maps!
The Launcher now also checks in for updates every 14 days; so no need to check this blog.
Update March 3, 2011:
The project has been migrated to SourceForge, as project L4D Launcher
. Binaries can be downloaded from there, but the source code is also freely available through SVN.
Microsoft .NET framework required.