He is currently involved in a side project called All Ends, which he and his former In Flames bandmate Jesper Strömblad write the songs for.

He also played guitar on the track "Self Versus Self" by UK/Australian drum and bass act Pendulum, along with his bandmates Anders Fridén and Peter Iwers.

Gelotte did several guest appearances, contributing a guitar solo on the track "Letters From Neverend", from the album Schlacht by the band Avatar, and performing lead guitar for the song "Force of Hand", from the album Atoma by the band Dark Tranquillity.

On In Flames' albums up to Whoracle, both Björn and co-guitarist Jesper Strömblad exclusively tuned their guitars to C standard.

In 2015, Epiphone announced the release of a limited edition Björn Gelotte signature Les Paul Custom.