Thomas Giles is the solo project of Tommy Giles Rogers Jr., vocalist and keyboardist for progressive metal band Between the Buried and Me, who has used the alias to explore territory incompatible with his main band's aesthetic. Pulse (2011) on Metal Blade Records launched the project formally, followed by Modern Noise (2014), Velcro Kid (2016), and Don't Touch the Outside (2018), each drawing on electronic music, synth-pop, and experimental rock over increasingly pure departures from metal. Rogers has described the project as a space for material that cannot fit within Between the Buried and Me, giving it a deliberately open-ended, genre-agnostic character.

Trioscapes formed in Greensboro, North Carolina in 2011 around the axis of Between the Buried and Me bassist Dan Briggs, saxophonist Walter Fancourt, and drummer Matt Lynch. The trio plays instrumental music that draws equally from the Mahavishnu Orchestra, King Crimson, and Return to Forever, filtering jazz fusion through a post-metal sensibility. Their debut Separate Realities (2012) and follow-up Digital Dream Sequence were both released on Metal Blade Records.

Tuesday the Sky is a solo project launched in 2016 by Jim Matheos, guitarist and primary composer for progressive metal band Fates Warning. The project produces largely instrumental music that draws from ambient, post-rock, and electronica — citing influences such as Brian Eno, Boards of Canada, and Explosions in the Sky — and stands in marked contrast to Matheos's heavier main band work. Three albums have been released: Drift (2017), The Blurred Horizon (2021), and Indoor Enthusiast (2025), all through Metal Blade Records.