NextChat

NextChat is a lightweight AI chat client that supports models such as Claude, DeepSeek, GPT-4 and Gemini Pro. It works as a web (PWA) and about 5 MB Linux/Windows/macOS desktop application, all data is kept local in the browser, and Vercel can be distributed for free with one click. The Enterprise version, which offers brand customization, authorization management and knowledge base integration, is a separate and commercial product.