| .pmbak |
PlanMaker backup |
| .wk%21 |
Lotus 1-2-3 spreadsheet |
| .wr%21 |
Lotus 1-2-3 spreadsheet (compressed) |
| .wq%21 |
Corel Quattro Pro compressed spreadsheet |
| .%24%24s |
OS/2 spreadsheet |
| .wb%3F |
Corel Quattro Pro spreadsheet file |
| .psisheet |
Psion 5 sheet |
| .oleo |
GNU Oleo spreadsheet |