UseAIWriter: Free AI business document writer - No signup required

Hey Product Hunt! 👋 I built UseAIWriter because I was tired of seeing people struggle with business document writing. Whether it's an SOP, a proposal, or a press release, most people either stare at a blank page or pay for expensive tools. I wanted to create something that's: 1. Completely free - no hidden costs 2. Zero friction - no signup required 3. Reliable - multi-provider AI with automatic failover 4. Fast - Cloudflare global CDN The biggest challenge was making it work with $0/month operating cost. I solved this by chaining free API tiers (Gemini, Groq, OpenRouter) with smart failover logic. If one provider goes down, it automatically switches to the next. Would love to hear your feedback!