LyX is a document processor that encourages an approach to writing based on the structure of your documents (WYSIWYM) and not simply their appearance (WYSIWYG).
Use BibDesk to edit and manage your bibliography. It will keep track of both the bibliographic information and the associated files or web links for you. BibDesk’s services will simplify using your bibliography in other applications and are particularly well suited for LATEX users.
TeXnicCenter is a feature rich integrated development environment (IDE) for developing LaTeX-documents on Microsoft Windows (Windows 9x/ME, NT/2000/XP) freely available under GPL.
Create, share and compile your LaTeX documents from anywhere Our online LaTeX editor has everything you need to get started straight away. No installation is needed and you can quickly upload your existing documents to ScribTeX.
ReText is a simple but powerful text editor for Markdown and reStructuredText. It is written in Python using Qt libraries, able to run on any platforms. You can read more about ReText in our FAQ.
For a variety of reasons, you might need to convert a document saved in a traditional Word Processor’s (MS Word, Open Office Writer, etc.) format to LaTeX.