writing-helper

A Next.js-based AI writing assistant supporting multiple LLM APIs (OpenAI, Claude, Gemini, etc.) with rich style customization features to help content creators improve quality and efficiency. Maintained by GeekyWizKid on GitHub, where it has earned 641 stars from the community.

It's actively developed around llm, writing-tool, nextjs, and is a solid reference for anyone building with these tools.