Alpaca
API-first US equities and crypto brokerage with commission-free trading, a full paper-trading environment, and straightforward REST and websocket interfaces.
What it is good at
The lowest-friction path from a working backtest to live paper trading. The paper environment mirrors production closely enough to be worth trusting.
Scored against the five published criteria, identically for every entry, by the editors of this site. Scores are never sold and are not affected by any commercial relationship. Read the method.
What to watch
US equities and crypto only. Payment for order flow economics apply — read the execution quality disclosures.
This section is not optional and is not negotiable. Every entry in the register carries one, whatever the commercial relationship.
Access it
No commercial relationship. Alpaca is listed on editorial merit and has no input into this description or its scores.