The paper provides a qualitative and quantitative comparison of three open-source deep learning frameworks: TensorFlow, Theano, and CNTK, utilizing benchmark datasets across various fields including image processing and natural language processing. The evaluations include performance metrics such as running time, memory consumption, and utilization of CPU and GPU resources, revealing CNTK's implementations generally outperform the others. The study highlights the need for comprehensive performance assessments in the fast-evolving deep learning landscape to guide researchers in selecting appropriate frameworks.