| Business | Phone |
| A Plus Computers 630 Black Forest Pl, Waterloo N2V 1R3 | (519) 888-9433 |
| Apex Computer Systems 401 Weber St N #H, Waterloo N2J 3J2 | (519) 886-6363 |
| Azure Computer Solutions Inc 715 Mcmurray Rd #5, Waterloo N2V 1Y2 | (519) 886-9461 |
| Metacomm Inc 105 Lexington Rd #17, Waterloo N2J 4R7 | (519) 883-4171 |
| Watlan Inc 160 Columbia St W #3, Waterloo N2L 3L3 | (519) 746-0550 |
| Coral Technologies 200 Frobisher Dr, Waterloo N2V 2A2 | (519) 570-1362 |
| Fiber Core Communications 299 Northfield Dr E #1b, Waterloo N2K 4H2 | (519) 725-5200 |