For support contact me, Mike Adams, at lanternbugs at gmail. Feel free to just leave a comment if you want or ask a question.
Pulsar uses Maurizio Monge's Fantasy, Spatial, and Eyes Chess Pieces with his permission. We also use Eric De Mund's adaptation of the Alpha, USCF and Merida chess pieces. "alpha" refers to Eric Bentzen's free Truetype chess font named "Alpha" and "merida" refers to Armando H. Marroquin's free Truetype chess font named "Mérida". (More info on alpha and merida see http://ixian.com/chess/#other they available under the Creative Commons Attribution-Share Alike 3.0 Unported License and used unmodified by OpeningTree).
Update Feb 16 2019, I've learned the Alpha pieces by Eric Bentzen that De Mund adapted are only free for non commercial use. For commercial apps, Eric charges a fee of 50 eruos. He can be contacted at Eric at kan-hurtigt-skifte@sitestory.dk.