The engine behind QuantConnect, Apache-2.0 and runnable on your own machine.
FreeOpen source
QuantConnect
2 products in the catalogue, each on its own card. One vendor, several products, because a merged card could not be compared or priced: the halves have different buyers and different competitors.
Hosted LEAN with the crypto data and the funding rates the engine does not ship.
$84/moFree tier