Aster Multiseat Alternative [extra Quality] — Free

SoftXpand was once the biggest competitor to Aster. While the company has moved on, older versions (like SoftXpand 2011) are sometimes found in "freeware" archives.

FreeNX is an open-source remote desktop solution that allows multiple users to access a single Linux-based computer simultaneously. FreeNX uses a proprietary protocol to provide fast and secure access to remote desktops. Key features include: aster multiseat alternative free

FreeNX is highly customizable and supports various Linux distributions. However, it may require some setup and configuration. SoftXpand was once the biggest competitor to Aster