ChatGPT
ChatGPT launched on 30 November 2022. It is OpenAI’s assistant: you type, speak or upload a file and it helps you write, explain, translate, code or plan. The free version is enough to start. If you use it every day, Plus is the usual next step. It is not a search engine with a source on every line; Perplexity or Gemini Notebook are better for that. It does not replace a lawyer, a doctor or a teacher: check anything that matters.