| Business | Phone |
| Access Systems Inc 33423 7th St, Union City 94587 | (510) 471-1520 |
| Alan Computech Intl 33215 Transit Ave, Union City 94587 | (510) 324-7600 |
| Anthony Boxer Consulting Union City 94587 | (510) 487-6644 |
| Byte The Beast 29532 Union City Blvd, Union City 94587 | (510) 489-2491 |
| Compumonitek Services Inc 33340 Central Ave, Union City 94587 | (510) 489-6798 |
| Dfi Pc & More Union City 94587 | (510) 489-2257 |
| Sharkrack Inc 32920 Alvarado Niles Rd # 250, Union City 94587 | (510) 477-7900 |
| System Services 146 Polynesia Way, Union City 94587 | (510) 895-9963 |
| Tech Highway 2453 Balmoral St, Union City 94587 | (510) 825-9529 |