| 1972 |
Thomas Person Profil Analyse (PPA) lanceres i USA |
| 1981 |
Thomas International etableres i UK |
| 1988 |
Thomas Supersoft software lanceres |
| 1990 |
Repræsentation i 14 lande; mere end 3.000 kunder |
| 1992 |
Lancering af Personal Assessment Centres (PAC) |
| 1993 |
Test for Selection & Training (TST) lanceres |
| 1995 |
Repræsentation i 40 lande; 24 sprog |
| 1996 |
Thomas Key (desktop) software lanceres |
| 2000 |
Repræsentation i 50 lande; Thomas Team Analyse lanceres |
| 2001 |
Thomas International fejrer 20 års jubilæum; ThomasInternational.net lanceres |
| 2002 |
Thomas Goodness of Fit (Matchniveauer) lanceres |
| 2004 |
ThomasInternational.net relanceres som en multilingual site |
| 2005 |
Thomas PPA modtager British Psychological Society (BPS) Certificate of Registration |
| 2007 |
Non-PPA produkt suite lanceres: Thomas Emotional Intelligence, Thomas360; Thomas Apitude & Ability; Thomas Skills Online |