Selyor stress-tests your strategies at a scale others can't reach: millions of parameter combinations per minute, an honest multi-timeframe engine, a no-code builder. Where intuition ends, your edge begins.
Every value you type becomes an optimizable parameter. The generated Python stays readable and editable. Everything within reach.
A compiled, parallelized kernel sweeps entire grids of stops, take profits, trailing exits and position sizes, at millions of combinations per minute. Others count in hours. You count in seconds.
Compiled kernel · parallel sweepsFilter your 15-minute entries with the 4-hour trend, exit on yet another timeframe: every condition gets its own. The engine only ever reads the last closed higher-timeframe candle, never the one in progress, proven by thousands of checks.
No look-ahead · session anchoringBuild your strategy in the visual Builder, or describe it in plain language to the Selyor assistant: it fills the form before your eyes and you approve every line. The generated Python file stays readable and hand-editable.
Visual builder · plain-language assistantPerformance heatmaps, walk-forward, Monte Carlo: see at a glance which parameter zones hold up, and which are an over-fitting mirage.
Heatmaps · walk-forward · Monte CarloSelyor is in open beta: all three plans below are fully unlocked, no credit card required. In return, we'd love your feedback (bugs, ideas, criticism): it shapes the product.
Yes. For the whole beta, the entire software is unlocked for everyone, no credit card required. The Discovery plan will remain free after the beta.
You'll get plenty of notice, and beta members will keep a lifetime founder price, below the listed prices. Nobody gets charged by surprise.
Yes. Backtests run locally, on your machine. Your market data and your strategies are never sent to our servers.
Selyor was born out of frustration. We are two friends, passionate about trading, and more precisely algorithmic trading, for over ten years. We weren't developers at first: we learned to code step by step, strategy after strategy, mistake after mistake.
The software on the market let us down fast. Crippled scripting languages that keep you away from the details of your rules. Skin-deep optimization. And above all, embellished results: look-ahead, entries and exits almost always in the backtest's favor. Going live was often a disaster, and the gap between the promised curve and the trading account, brutal.
So we built our own engine: a backtest you can actually trust. No look-ahead bias, honest fills (including on gaps) and the optimization power we couldn't find anywhere else. For years, this software served just the two of us, on our own accounts.
Then we decided the community deserved better than what was out there. That's how Selyor was born: the tool we wish we had found ten years ago, placed in your hands.
A free account unlocks the download and syncs your license. Install, sign in, load your data: your first backtest runs within minutes.
Support, pricing, partnerships: we reply by e-mail, usually within one business day.