AetherAi is an AI tools directory aimed at cost-conscious builders. You can search across 600+ tools, filter by price tier, and surface free or cheaper alternatives to popular options like ChatGPT. A side-by-side comparison feature lets you evaluate tools without bouncing between tabs, and a workflow builder helps you chain multiple tools together for a specific use case. Founders, developers, and indie makers can list their own products for free — no credit card or account required. Useful if you're auditing your AI spend or assembling a lean stack from scratch.