What I'm Building

Personal blog of Ethan Yu, sharing indie development journey, technical insights, and thoughts about the nomadic dev life. Focused on SaaS products and developer tools.

Help developers quickly generate project documents (such as requirements documents, architecture documents, and technology stack documents) required for AI development, allowing AI programming assistants (Cursor, Windsurf, etc.) to better understand the project context and provide more accurate code suggestions.

Professional stock market intelligence platform combining real-time market overview, AI-powered stock analysis, and smart portfolio tracking. Trusted by 10,000+ professional investors to make informed investment decisions and consistently beat the market.

AI-powered personalized birthday card generator with custom images and heartfelt messages. Create unique birthday wishes that make every celebration special and memorable.

Fast, free, and high-quality YouTube to MP3 converter. Convert YouTube videos to MP3 audio files quickly and easily. No registration required, completely free to use.