Note: Most (if not all) of the Autodesk middleware developers are based in Montreal.
 
SAN RAFAEL, Calif., September 1, 2010 — Korean game developers MAIET Entertainment and WeMade Entertainment have both licensed Autodesk Kynapse artificial intelligence (AI) middleware for their respective upcoming titles, "GunZ2: The Second Duel" and a new MMORPG, currently codenamed "LF." The studios [...]

Here is some good news for all you Montreal indie developers:
From BusinessWire:
Havok™, the premier provider of interactive software and services for digital media creators in the games and movie industries, today announced that as part of the company’s expanding business model it has launched an Independent Developer Program. Designed to enable independent game studios [...]

From worthplaying.com:
Ubisoft has made a strategic decision to use Quazal technology to provide online functionality within several of their upcoming games, as well as signed a long-term services and consulting agreement with Quazal to provide assistance from dedicated engineers with integration and feature development.
The Enterprise license obtained by Ubisoft provides for usage of [...]

From developmag.com:
Canadian [Montreal] middleware provider Audiokinetic may have launched its new SoundSeed product as a family of plug-ins for its established WaveWorks Interactive Sound Engine (Wwise), but it seems that the potential is much wider.
“At the moment, we’re releasing SoundSeed through Wwise because we’re looking to extend Wwise as a platform – but [...]