Service Providers and Consultants for requirements engineering and related areas.
IBM Products and Services - IBM provides a wide variety of products and services for all areas of software development, including the RATIONAL products for software requirements.
Process Impact - Process Impact is a service provider who focuses on practical software process improvement. Areas of expertise include requirements engineering, risk management, software peer reviews, project management, metrics, and process assessment.
Software Productivity Center - SPC is a leading provider of technology and management services to Fortune 1000 and medium-sized enterprises wanting to realize the full business potential of their software development process.