| 01/06/11 | Great Fosters Hotel is going live with HART. |
| 26/02/11 | Brownsover Hall Hotel is going live with HART. |
| 24/02/11 | Hall Garth Hotel & Club is going live with HART. |
| 19/02/11 | Etrop Grange Hotel is going live with HART. |
| 14/02/11 | Harpenden House Hotel is going live with HART. |
| 06/02/11 | Maidshead Hotel is going live with HART. |
| 02/02/11 | Software Underground is being restructured creating a new support team to handle the increasing number of installations. |
| 01/02/11 | Metropole Hotel is going live HART. |
| 29/01/11 | Le Manoir aux Quat Saisons switches to Software Underground for direct HART support. |
| 18/01/11 | A revenue management module is added to version 3 as part of the integrated software. |
| 12/12/10 | Raemoir House is going live HART. |
| 02/12/10 | Software Underground is going international by supplying HART to a number of luxury hotels in the islands of Santorini and Mykonos (Greece) in partnership with Hotel Brain. Most of them are Small Luxury Hotels, Relais & Chateaux or Leading Hotels of the World members. |
| 29/11/10 | The Barns at Bedford becomes the first Sonoma Group hotel to install HART. Sonoma comes directly to Software Underground for support. |
| 04/11/10 | Software Underground is a certified Synxis/Sabre partner having finalised the Web booking interface between the two systems. |
| 01/10/10 | HART provides an SMS gateway using services from Dynmark. |
| 01/09/10 | HART version 3.0 enters its final testing stage. Release dates to be published soon. |
| 01/07/10 | The Donnington Valley Group starts working closely with Software Underground to customise version 3.0 for the Sonoma Hotels |
| 01/07/10 | The Donnington Valley Group switches to Software Underground for HART support. |
| 10/06/10 | HART is certified by Commidea for credit card integration. |
| 01/06/10 | Loch Torridon goes live with HART. |