Phind is a free AI search engine optimized for developers and technical questions, providing detailed code examples, explanations, and cited sources for programming and research worldwide.

Pi is a free personal AI companion by Inflection designed for empathetic, ongoing conversations, advice, brainstorming, and support with unlimited usage for users around the world.

NotebookLM by Google is a free experimental AI tool that transforms uploaded documents, notes, and sources into audio overviews, summaries, study guides, and interactive insights instantly.

Blackbox AI is a free coding assistant that helps generate, debug, optimize, and explain code in any programming language with real-time suggestions for developers globally.

ChatPDF is a free AI tool that lets users upload PDFs to ask questions, get summaries, extract information, and gain insights from documents quickly and securely worldwide.

DeepSeek Chat provides free access to advanced open models like DeepSeek-V3 and Coder for superior reasoning, mathematics, coding, and long-context conversations globally.