.WK4 file extension

This is the basic program to work with .WK4 extension

Lotus SmartSuite Release

Lotus SmartSuite Release 1-2-3 Worksheet

The program works with the following extensions: wk1, smm, mas, pre, wk3, wk4, wt4, apr, apt, mpr, pal, mwp, vew, dgm, smc, prz, sym, lwp and 123

.WK4 extension is also supported by the following programs:

Lotus SmartSuite 97

Lotus SmartSuite 97 1-2-3 Worksheet

KeyView for Lotus

KeyView for Lotus WK4 File

Keyview for Lotus is a freely distributed program for viewing Lotus documents.
Lotus 1-2-3

Lotus 1-2-3 1-2-3 Worksheet

IBM Lotus offers powerful ways to work with numbers.
Lotus SmartSuite - English

Lotus SmartSuite - English 1-2-3 Worksheet