SageMath is a free open-source mathematics software system. You can use a SageMath cell online by going here.
xvar("t")
r=vector([t,t^2,t^3])
r(t=2)
plot_points
can be used for greater resolution. (Default is 75).xxxxxxxxxx
var("t")
r=vector([sin(t),cos(t),t])
parametric_plot3d(r, (t,0,6*pi), plot_points=[150])