Nebula integrates open-source AI models including Llama-3.1-8B, Mistral-7B, and DeepSeek-R1 directly into a CLI tool for cybersecurity professionals. It automates vulnerability scanning, note-taking, and real-time security insights during penetration testing engagements. The tool also includes a Deep Application Profiler using neural networks for detecting zero-day malware through behavioral analysis rather than signature matching.