Free and portable math software that can be used in and out of the classroom for geometry, algebra and calculus.
GeoGebra Portable can open LaTeX documents and edit LaTeX documents.
Powerful text editor with support for a number of programming languages with syntax highlighting, code folding and enough power for large files.
UltraEdit can open LaTeX documents, edit LaTeX documents, edit PHP files, edit HTML documents and highlight syntax.
Provides for syntax highlighting in over 80 languages.
Highlight can open DOC and DOCX files, open LaTeX documents, edit LaTeX documents and highlight syntax.
A completely free LaTeX document editor and authoring tool.
TeXstudio can open LaTeX documents, edit LaTeX documents and highlight syntax.
A programmers notepad support several languages with color coding like PHP, C++, Perl and HTML.
BowPad can open SRT files, open LaTeX documents, edit LaTeX documents and highlight syntax.
Constantly-updated implementation of TeX and LaTeX, great for mathematics and formulae.
MiKTeX can open DOC and DOCX files, open LaTeX documents and edit LaTeX documents.
A free programmers text editor with syntax recognition supporting web languages like PHP, HTML and CSS.
Komodo Edit can open LaTeX documents, edit LaTeX documents, edit PHP files, edit HTML documents and highlight syntax.
An HTML editor with WYSIWYG and syntax highlight for PHP.
Arachnophilia can open LaTeX documents, edit PHP files and edit HTML documents.
Quickly and easily create markdown formatted text with this small and lightweight utility, great for sites like reddit and github.
MarkdownPad can open LaTeX documents and edit LaTeX documents.
Advanced editing and notepad replacement which includes syntax highlighting and support for a number of programming languages including HTML, PHP, Perl,...
GridinSoft Notepad can open LaTeX documents, edit LaTeX documents, edit PHP files and highlight syntax.