4. TrendRadar -- AI Trend Monitor (sansan0/TrendRadar)

GitHub·high signal

AI-driven public opinion and trend monitoring tool with multi-platform aggregation, RSS, and smart alerts. Aggregates trending content from dozens of platforms simultaneously, applies keyword filtering, and delivers via WeChat/Telegram/Feishu/Slack/email/webhook. Supports MCP protocol so you can chat with your trend data via Claude Desktop. Scheduling templates (always-on, morning-evening, office hours, night owl). Docker deployment. Essentially the self-hosted version of what we're doing here -