I believe that the only bundled layout is a force atlas 2 force-directed. https://github.com/jacomyal/sigma.js/tree/master/plugins https://github.com/jacomyal/

I believe that the only bundled layout is a force atlas 2 force-directed. https://github.com/jacomyal/sigma.js/tree/master/plugins https://github.com/jacomyal/sigma.js/tree/master/plugins It does look like it should be reasonable to add in any custom layouts though.