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.

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.

Google AI Studio is a free developer platform for prompting, tuning, and building custom applications with Gemini models, including advanced multimodal features for creators globally.

You.com is a free privacy-focused AI search and assistant with customizable apps for writing, research, image generation, and personalized answers serving users 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.

Goblin.tools is a free collection of practical AI utilities for task management, text formalizing, estimation, and brainstorming, especially helpful for neurodivergent individuals worldwide.