When it comes to machine learning companies, there are several prominent ones in the industry. Some of these companies are well-known for their contributions to the field of machine learning and artificial intelligence. Here are a few notable ones:

1. Google AI: Google is known for its research and development in AI and machine learning, with projects like Google Brain and TensorFlow. They have applications of machine learning in products like Google Search, Google Assistant, and more.
2. Facebook AI Research (FAIR): Facebook has a strong presence in AI research, focusing on areas like natural language processing, computer vision, and reinforcement learning. They have developed tools like PyTorch for machine learning.
3. OpenAI: OpenAI is a research organization that has worked on advanced AI models, including the GPT (Generative Pre-trained Transformer) series, which I am based on. They focus on creating AI technologies that benefit humanity.
4. Microsoft AI: Microsoft’s AI efforts include Azure AI, which provides various tools and services for developing and deploying AI applications. They are also involved in research in areas like computer vision, speech recognition, and more.
5. IBM Watson: IBM is known for its Watson platform, which offers AI and machine learning services to businesses. Watson has been applied in various industries, including healthcare, finance, and customer service.
6. Amazon Web Services (AWS): AWS provides a range of machine learning services, making it easier for businesses to implement machine learning into their applications. Services like Amazon SageMaker enable building, training, and deploying models.
7. NVIDIA: While primarily known for its graphics cards, NVIDIA has been a significant player in the field of AI and machine learning. They produce GPUs that are widely used for accelerating machine learning training and inference.
8. Intel AI: Intel offers hardware and software solutions for AI and machine learning workloads. Their technologies are used in various industries, including healthcare, automotive, and more.
9. Uber AI: Uber has a dedicated AI research team that works on projects related to self-driving cars, natural language processing, and more.
10. Apple AI: Apple integrates AI into its products, such as Siri and facial recognition technology. They also invest in AI research and development.