Yap! download area
The current release of Yap! is Version 0.9.1 Build 49. You may chose between:Binary-only Installer (yap-0.9-Installer.exe, 0,5 Mbytes)
Full source (yap-0.9-Source.zip, 0,5 Mbytes)
Or, if you prefer, you can go straight as an arrow to www.sourceforge.net/, select the Files link and download it via one of the mirrors.