| exactEarth Ltd | Ontario |
| ExactFlat | |
| Exacto Communications | |
| ExactSeek.com | Manitoba |
| Exagens Corporation | |
| Exalt HR Consulting, Inc. | British Columbia |
| Exan Software | |
| eXante Solutions | Ontario |
| Exaxe | Quebec |
| Excegis Developments, Inc. | Alberta |
| Excel Accounting Services, Inc. | |
| Excel Consulting, Ltd | Saskatchewan |
| Excel Telecom | Quebec |
| Excelar Technologies | |
| Excelgra, Inc. | Ontario |
| ExcelGuru | Ontario |
| Excelion Technology, Inc. | |
| Excell Communications | Ontario |
| Excell IT, Inc. | Ontario |
| Excellence industrielle | |
| Excelleris Technologies, Inc. | British Columbia |
| ExcelLinx Communications | Ontario |
| ExCellThera | Quebec |
| Excelocity | Ontario |
| ExcelSystems Software Development, ULC | British Columbia |
| ExcelToner.ca | Quebec |
| eXcerta Network Services, Inc. | Ontario |
| Exchange Technology Services | |
| Excite Corporation | Newfoundland and Labrador |
| Exclaim Marketing | |
| Exclaim Solutions | Ontario |
| Exclusive Edge, Inc. | Ontario |
| Exclusive Web Solutions | |
| Execulink Telecom | Ontario |
| Execution Labs | Quebec |
| Executive Platforms, Inc. | |
| Executive Security Ltd | British Columbia |
| Exegrin Technologies Ltd | British Columbia |
| EXEL Research, Inc. | |
| Exel-Tech, Inc. | Quebec |
| Exemplifi Ltd | |
| Exeogen Software Solutions, Inc. | Ontario |
| Exequor Studios | Quebec |
| EXFO, Inc. | Quebec |
| Exhib Stratégie Interactive | Quebec |
| Exia | Quebec |
| eXico Software Solutions | |
| EXIT 0 digital systems, Inc. | Nova Scotia |
| ExitCertified Corporation | Ontario |
| Exitloop | British Columbia |