Adobe XD
Figma
UXpin
Sketch
ProtoPie
Invision
Mockplus
Balsamiq
Engineering Equation Solver
Qalculate!
Calcumber
SMath Studio
Numara Calculator
engineeringsuite
PTC Mathcad
fxSolver
Adobe XDFigma - Team-based interface design, Figma lets you collaborate on designs in real time.
Qalculate! - Qalculate! is a multiplatform multi-purpose desktop calculator.
UXpin - Design is really about solving problems. UXPin is the UX Design Platform that gets that right.
Calcumber - Calculate in a notebook and share โ from everyday math to engineering.
Sketch - Professional digital design for Mac.
SMath Studio - Tiny, powerful, free mathematical program with WYSIWYG editor and complete units of measurements support.