| Business | Phone |
| Data Net Computer Systems 1330 Monte Vista Ave # 10, Upland 91786 | (909) 920-4380 |
| Inland Productivity Solutions 1153 W 9th St, Upland 91786 | (909) 981-4500 |
| Laser App Software 2345 W Foothill Blvd # 10, Upland 91786 | (909) 985-2174 |
| Millennium Systems 223 N 1st Ave # 101, Upland 91786 | (909) 931-3171 |
| Powell & Assoc Upland 91786 | (909) 949-9523 |
| Resource Computer Solutions 1308 Monte Vista Ave # 8, Upland 91786 | (909) 949-9159 |
| Xyz Software Technologies 589 Highland Ct, Upland 91786 | (909) 985-6780 |