TradingView: charts
What we use it for: checking the price action behind a ticker the crowd is excited or worried about. Free plan available. Interface in English, Chinese and Korean.
Tools we use to check the crowd
The Crowd Tape counts what ~200 US-stock accounts on X are saying. A tally isn't a trade, though. These are the tools we open when we want to check the chart, screen for names, or look at the fundamentals.
Finviz: screener & heatmap
What we use it for: the market heatmap and quick screens (sector, float, earnings date). The free version is enough to start. Elite adds real-time data.
Koyfin: fundamentals & dashboards
What we use it for: comparing valuation and estimates across the names that show up as "joint bullish" or "joint bearish".
Interactive Brokers: broker
What we use it for: low-cost access to US markets from outside the US.
(not available to residents of Korea, China, Japan and some other countries)