Finale: Punto Coronato

Both the triangular and square ones are contained in the "Toccata" font and among the Sibelius Opus Special Extra fonts.

You can find the Toccata font here:

http://members.efn.org/~bch/aboutfonts.html

You can also obtain the Sibelius fonts for free with the Sibelius demo itself.

You can also create them using Finale's Shape Designer. It is not difficult to do, since they are simple signs, and you can attach the agogics to them.

This is what came to mind.

Thank you!