What is .SKC file extension?
Database created with Borland SideKick, an early personal information manager (PIM) program; called a "card file" since it contains a list of personal contacts; may also include calendar events, memos, and communication archives.
The final version of SideKick was SideKick 99, which was developed for Windows 98.
You can see a list of software programs here on easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.