Here are five software tools that provide Generative AI services:

1. OpenAI's GPT-3 Website:://openai.com/gpt-3/

2. NVIDIA's Jarvis Website: https://www.nvidia.com/en-us/industries/conversational-ai/

3. Google's TPUTensor Processing Units) for generative models Website: https://cloud.google.com/tpu

4. IBM Watson Website https://www.ibm.com/watson

5. Microsoft's Azure AI Website: https://azure.microsoft.com/en-us/ai/

These platforms offer a range of generative AI services and solutions to cater to various enterprise needs and requirements.