| Developer/programmer open source (or based upon) | | | | | | | |
|---|
| Developer/programmer proprietary (and so based) | | | | | | | |
|---|
| Systems Administrator Linux or other open source | | | | | | | |
|---|
| Systems Administrator Unix | | | | | | | |
|---|
| Systems Administrator proprietary micro | | | | | | | |
|---|
| Systems Programmer proprietary mainframe | | | | | | | |
|---|
| Database Administrator - open source DB (e.g. mysql) | | | | | | | |
|---|
| Database Administrator - proprietary DB (e.g. Oracle) | | | | | | | |
|---|
| Network Administrator open source (e.g. Linux firewall) | | | | | | | |
|---|
| Network Administrator proprietary (e.g. Cisco IOS) | | | | | | | |
|---|
| IT Hardware open specification or for Linux or open source | | | | | | | |
|---|
| IT Hardware proprietary for proprietary code/use | | | | | | | |
|---|
| IT Management based on open source | | | | | | | |
|---|
| IT Management based on proprietary | | | | | | | |
|---|
| IT Executive based on open source | | | | | | | |
|---|
| IT Executive based on proprietary | | | | | | | |
|---|