Developer website: Hutchings Software
Bosco's Screen Share is easy, free cross-platform screen sharing for Mac and Windows. Bosco's Screen Share allows you to share and drive desktops regardless of platform choice. Bosco's Screen Share uses a peer-to-peer, serverless protocol and leverages standards such as JPEG image compression and TCP/IP, ensuring excellent performance with minimal interruptions. Bosco's Screen Share can also work with Personal Web Sharing to publish your screen to friends' Web browsers.
Version 3.0: Universal Binary for Mac OS X, significant performance improvements, and better Web screen sharing.
Mac OS X 10.3 or later (PowerPC 500MHz or better)