A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | 1
| x-root Software GmbH (6) | Xantaro Deutschland GmbH (9) |
| Xantrex Technology Inc. (5) | xaverius Personalberatung GmbH (7) |
| XCOM AG (5) | Xella International GmbH (15) |
| Xenon-Human Resources GmbH (42) | Xenon-Human Ressources GmbH (30) |
| XING AG (47) | xinonet GmbH (5) |
| xplosion interactive (8) | xplosion interactive GmbH (8) |
| Xpress Reply GmbH & Co. KG (5) | XPSNET (275) |
| XPSNET Xtended Professional Services (16) | XPSNET Xtended Professional Services e.K (24) |
| Xpuls business solutions gmbh (23) | Xpuls GmbH (20) |
| Xtronic GmbH (18) | xx-well.com GmbH (8) |
| XXXL Zentralverwaltungs- GmbH & Co. KG (44) |