| ID | Name | Type |
|---|---|---|
| #565 | Alberto Ruiz Gordillo | + |
| #566 | Alberto Salvi | + |
| #567 | Alberto Sampler | + |
| #568 | Alberto Suner | + |
| #569 | Alberto Toledo | + |
| #20687 | Alberto Vigneron | + |
| #570 | Alberto Vilades Laborda | + |
| #571 | Alberto Vinuela | + |
| #16538 | Alboran70 | - |
| #572 | Alby | ? |
| #573 | Alchemist PD | Z |
| #574 | Alchemist Research | Z |
| #575 | Alchemist Software | Z |
| #576 | Alchemy Software | Z |
| #21257 | Alcides da Silva Pereira | + |
| #577 | Aldeco | ? |
| #578 | Ale-xs Xcl | ? |
| #579 | Alea | ? |
| #580 | Alec Carswell | + |
| #581 | Alec Goodyear | + |