What software to type here

Hi;
Like the title says what software do you use to type here.

Thanks.

This forum has LaTeX support. E.g., [tex]\int_0^x t^2\,dt=\frac{t^3}{3}+C[/tex] gives . See the LaTeX Help subforum or search the web about LaTeX for more information. Remember to use [tex]...[/tex] tags.

I know LaTeX was first developed in 1985 by Leslie Lamport