In Assassin's Creed, what is the name of the Animus company founded by Abstergo?

In Assassin's Creed, the Animus company founded by Abstergo is Abstergo Entertainment.

Abstergo Entertainment is a subsidiary of Abstergo Industries, the modern-world corporation secretly controlled by the Templars. It develops commercial products based on genetic-memory research, allowing consumers to experience reconstructed historical lives through the Helix platform.

The company is especially prominent in Assassin's Creed IV: Black Flag and Assassin's Creed Rogue, where the player character works inside an Abstergo Entertainment facility. Its existence shows how the series' central conflict moves beyond secret laboratories and into mass entertainment and data collection.

Abstergo Industries is the larger parent corporation and should not be given as the more specific answer. The Animus is the technology used to access genetic memories; it is not itself a company. Helix is a platform and product associated with Abstergo Entertainment rather than the subsidiary's name.