| 100Ladrillos | Jalisco |
| 6 Grados | Jalisco |
| 99minutos | Mexico City |
| 99minutos.com | Mexico City |
| AB Estudio de Comunicación | |
| Abaco Computadoras | Puebla |
| Abacom Telecomunicaciones | Mexico City |
| Abalon Tecnologia & Sistema | Querétaro |
| Abassi Tecnologies | |
| Abbla | Mexico City |
| Abiztar | Mexico City |
| Abonitos.mx | |
| Abugaber.com | Mexico City |
| Acer México | Mexico City |
| Acerta Computación Aplicada, S.A. de C.V. | Mexico City |
| ActivaMente | Mexico City |
| Adanetx | Mexico City |
| Adguer | Mexico City |
| ADIX de México, S.A. de C.V. | Mexico City |
| ADN Social Web | Nuevo León |
| Adop-tec.com | Mexico City |
| Adsum Software Experience | Sinaloa |
| Advanced Business Systems S.A. de C.V. | Nuevo León |
| Advanced Data Systems de México | Jalisco |
| Advanced Technology Research | Jalisco |
| ADWEB Solutions Mexico S.C. | Jalisco |
| Adwebsys S.A. de C.V. | Mexico City |
| Aeroclúster de Querétaro | |
| Agape Networks, S.A. de C.V. | Mexico City |
| Agave Lab | Jalisco |
| Agencia Espacial Mexicana | Mexico City |
| Agencia Mind | Yucatán |
| Aguilahosting.com | Mexico City |
| Aguitel, S.A. de C.V. | Mexico City |
| Airtm | Mexico City |
| Akiba | Mexico City |
| Akky | Nuevo León |
| Albo | Mexico City |
| albo | |
| Alegoria Studio | Mexico City |
| Alestra | Jalisco |
| Algebraix | Mexico City |
| Alianza Corp | Mexico City |
| ALLVP | Mexico City |
| Alojate | Puebla |
| AlphaCredit México | |
| Alser | Mexico City |
| Alta Multimedia | Mexico City |
| Alta Ventures Mexico | Nuevo León |
| Altomobile | Jalisco |