BLE, short for Brooks Last Edge, is an OLS subset consisting of 27 algorithms for cases in which the last layer has all edges oriented and the last slot's corner piece is solved.
Anthony Brooks came up with the idea of BLE independently. However, after publishing the algorithms for the subset, Anthony discovered that Jack Johnston and Michael Gottlieb had already come up with the same subset in late 2013. BLE is the second half of their subset JJLS. Jack and Anthony later came to an agreement that it could be called BLE since Anthony spent more time on it, generated faster algorithms, and Anthony intended BLE to be used in a different way from JJLS.