ChatGPT (OpenAI)

ChatGPT, particularly the GPT-4 model, serves as a versatile, general-purpose writing assistant for millions. Its conversational interface is ideal for brainstorming, drafting, and iterative editing. The creation of Custom GPTs allows for tailored writing helpers. While lacking the specialized workflows of dedicated apps, its raw capability, flexibility, and vast plugin ecosystem make it a foundational tool. It ranks as the ubiquitous jack-of-all-trades, often used in conjunction with more specialized platforms for initial ideation or complex problem-solving.