Matrix2LaTeX is a program that produces LaTeX code required to typeset matrices/vectors. It supports a set of predifined matrices/vectors such as Hilbert, unitary and diagonal.
TeXPerfect plans to be a cross-platform, extensible, user-friendly yet expert-tunable visual TeX implementation. The most important feature will be a split screen (inspired by WordPerfect(R) Reveal Codes) showing the underlying TeX code.