The most popular alternative is PortableApps.com, which is both free and Open Source. If that doesn't suit you, our users have ranked 11 alternatives to yaP so hopefully you can find a suitable replacement. Other interesting yaP alternatives are LiberKey (Free), The Portable Freeware Collection (Free), PenDriveApps (Free) and FramaKey (Free, Open Source).
- This pendrive suite is an application launcher that runs in the notification area. It uses a Vista-like menu style.