🚀 go-pugleaf

 I have found ChiWriter to be an excellent wp for the bucks. It's much
 cheaper than many others, but does Greek letters, mathematical symbols,
 several other fonts, and has facilities to do multi-line equations. I
 used it for my thesis and I had some very messy equations-subscripted Greek
 characters, etc.  The nice thing about ChiWriter is that what you see is
 what you get-rather than having control characters all over the screen
 and not knowing what it really looks like until you print it out, you
 see on the screen exactly what you'll print out (once you're done with the
 line that is).  You can do multi-line summation and integral signs/equations.
 The (apocryphal) story is that a computer whiz wanted the perfect wp to
 write his thesis on and came up with this. It's always been able to do what
 I want-you can even design characters and symbols.  Good luck on your hunt!