About 32,000 stars landed on these 5 GitHub repos in 7 days. Hallmark is a free design skill for Claude Code, Codex and Cursor that stops your AI-built sites from looking AI-made. gpu-unlock is a Linux module that lifts a speed cap on RTX cards for AI math, using a firmware exploit, so it's one for a spare box. DeepTutor is a free study app you run yourself, with chat, quizzes and books from your own notes. TradingAgents has AI analysts debate a stock before a simulated trade, and its README says it isn't financial advice. Thinkrail is a free, open-source IDE from JetBrains where every agent task gets its own copy of your code. I'm installing Hallmark and experimenting with TradingAgents. Install commands and full notes on the blog. Follow @buildwithneej for more free AI tools like this. #claude #codex #github #opensource #aitools - @buildwithneej