TI-Nspire users can now do STEP BY STEP:
Vectors: Dot Product, Cross Product, Projection, Distance, ..
Vector Derivatives: Curl, Divergence, Laplacian, Curvature, ..
Line Integrals, Greens Theorem, Surface Integrals, Stokes Theorem
Analytic Geometry: Points, Lines, Planes
Multivariable Calculus: Tangent planes, Gradients, Lagrange Method, Laplace Transform,..
Linear Algebra: Row Echolon, Eigenvalues/vectors , Gram Schmidt Procedure, ..
Motion and Vector Values Functions
Parametric Equations
Conversions
and much more
More Details: http://www.tinspireapps.com/?a=VCME
Free trials.