TensorFlow is an open-source software library developed by Google for machine learning and artificial intelligence. It provides a flexible platform for building and training various types of neural networks, enabling developers to create models that can learn from data. With its user-friendly interface and extensive documentation, TensorFlow is widely used in both research and industry. It supports multiple programming languages, including Python, and can run on various hardware platforms, from personal computers to large-scale distributed systems, making it accessible for a broad range of applications.