Wikipedia
Taligent (a portmanteau of Talent and Intelligent) was the name of an object-oriented operating system, and the company dedicated to producing it. Initially started as a project within Apple to provide a replacement for the Mac OS, it was later spun off into a joint venture with IBM as part of the AIM alliance, with the purpose of building a competing platform to Microsoft Cairo and NeXTSTEP.
The development process never worked, and Taligent is often cited as an example of a project death march. Apple pulled out of the project in 1995 before the code had been delivered, and went on to start the Copland project to replace it. Copland quickly proved even more disastrous than Taligent, while IBM finally delivered a working version known as CommonPoint but it saw little use and quickly disappeared from IBM's catalogs. Taligent was officially dissolved in January 1998.