The Patchworks editor is an interesting project using a 3x2 grid of code snippets to try to help developers navigate code more effectively.
30 second video: https://www.youtube.com/watch?v=tGkGjZI21Mw
Preliminary study: https://austinhenley.com/pubs/Henley2014VLHCC_GC_Patchworks.pdf
In-depth study: https://www.cs.memphis.edu/~sdf/publications/Henley_et_al_VLHCC_2014.pdf
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