| Business | Phone |
| A K Industries Inc 23 Abbeyview Ave, Willow Grove 19090 | (215) 659-0111 |
| Anderson Financial Systems Inc 607 Easton Rd, Willow Grove 19090 | (215) 830-3000 |
| J A Giffin 24 Cameron Rd, Willow Grove 19090 | (215) 657-6322 |
| Gpcor Willow Grove 19090 | (215) 659-4979 |
| Internet Data Technologies 2300 Computer Rd, Willow Grove 19090 | (215) 659-7664 |
| Noetic Software Inc 2300 Computer Rd, Willow Grove 19090 | (215) 784-9580 |
| Mungin Computer Systems 2606 Elliott Ave, Willow Grove 19090 | (215) 659-3764 |