latex4technics - Online LaTeX editor with autocompletion, highlighting and 400 math symbols.
PDF Previewer for Windows 8 - Features of PDF Previewer for Windows 8, Windows 8.1 - Preview PDF document with PDF preview handler technique
Lagrida Latexeditor - Lagrida Latexeditor is an all-in-one website that lets you edit, write or check the authentication of your mathematical equations or symbols in a decent manner without any hassle.
APV - Open Source PDF Viewer for Android based on MuPDF library
Hostmath - Hostmath is a user-friendly mathematical symbol or equation editor that provides you an opportunity to edit your entire difficult equation in seconds.
POKATreader - With POKATreader you can read your PDF files in full-screen mode, but one of the best features is...