Open-source components for trading screens, charts, order entry, and price boards
Visual, no-code backtesting and technical analysis platform for US stocks and ETFs
Stage
Not given
Startup
Founded
Not given
2026
Based in
Not given
GB
Pricing model
Open source
Freemium
Pricing
Not given
Free plan: no card required, no time limit. Premium: $13.99/month or $139.99/year. UK customers billed in pounds: Premium £9.99/month or £99.99/year. 14-day money-back guarantee on first payment.
Key features
18 chart types with Canvas 2D or WebGL rendering
134 technical indicators
69 drawing tools including trend lines and Fibonacci
Complete trading widget with watchlists and position tracking
Realtime price board supporting 1,000 symbols at 30,000 ticks per second
Order flow visualization with liquidity heatmap
Mobile-responsive design with touch gestures
Bar replay and paper trading
Support for TypeScript, React, Vue and Svelte
Works with any exchange
Over 60 technical indicators on configurable charts
Visual strategy builder with AND/OR/NOT logic trees, no coding required
Historical backtesting on 400+ US stocks, ETFs and indices
Event analysis to find market conditions and measure outcomes
Automatic detection of 17 classic candlestick patterns
Replay feature for bar-by-bar chart practice or hidden stock learning
Five guided courses: Market Foundations, Technical Analysis, Events Analysis, Test Your Strategy and Replicate Published Studies
14,000+ US stocks and ETFs with subscriber's own free Tiingo key on Premium
What makes it different
No third-party runtime dependencies
Headless chart at 176 KB gzipped
Processes live ticks into indicators in microseconds
MIT licensed and free for any market
Performance tested: 1 million bars panned at 60 fps
Educational focus with no trading signals or recommendations, designed to teach users to test claims themselves
Calculations independently verified against TradingView, TA-Lib and manual implementations
Built-in Test Bench publishing original research studies with full methodology and negative results published transparently
No look-ahead bias in backtesting: trades fill only at or after rule-triggering candle close
User's Tiingo key and data never stored on GU Analyser servers, maintaining privacy
TradeCanvas
GU Analyser