Most "best AI tools" lists online are affiliate farms. We test tools on real dev workflows — shipping features, debugging production issues, cutting invoice generation time — and write down what actually worked.
Reviews below are grouped by use case. Every review names the version tested, the stack it was tested in, and what the tool could not do. If you see a tool missing, it either failed testing or we have not finished reviewing it yet.
For a buyer in India, the AI prompt marketplace question is really a payment question. Most big prompt stores price in USD and take only international cards — no UPI, plus an FX markup. Here is how PromptBase, Gumroad, Etsy, PromptHero and WOWHOW actually compare on currency, checkout, and whether you pay once or subscribe.
Garry Tan's gstack is the most-starred Claude Code configuration on GitHub, and it earns it. But it's an engineering stack by design — and if you run a business on Claude Code, engineering is only half the job. A field comparison from an operator, not a spectator.
Three frontier models compete for production workloads in June 2026. Claude Opus 4.8 leads on coding (88.6% SWE-Bench), Gemini 3.5 Pro owns ultra-long context (2M tokens), and GPT-5.6 targets agentic tasks. Here's the decision framework.
OpenCode is the most-starred open-source AI coding agent in history — and in a 38-task production benchmark, it beat Claude Code on debugging and documentation while losing on complex refactors. Here's the full breakdown, cost model, and who should actually switch.
