The uninstall process depends on the platform and version of SlickEdit you are using.
Microsoft® Windows®: First, go to (Help-->About SlickEdit) to identify the location of the User Configuration Directory. This directory can be deleted after performing the Windows uninstall if you desire.
To uninstall SlickEdit, go to the Add/Remove Programs section of the Windows Control Panel and uninstall SlickEdit.
UNIX: Delete the directory where SlickEdit was installed (/opt/slickedit/ by default) and everything under it. User configurations are stored in the .slickedit directory in the user's home directory by default.