Overleaf - The online platform for scientific writing. Overleaf is free: start writing now with one click. No sign-up required. Great on your iPad.
Microsoft Visual Studio - Microsoft Visual Studio is an integrated development environment (IDE) from Microsoft.
Fidus Writer - Fidus Writer is an online collaborative LaTeX editor especially made for academics who need to use...
Visual Studio Code - Build and debug modern web and cloud applications, by Microsoft
TeXworks - The TeXworks project is an effort to build a simple TeX front-end program (working environment)...
Xcode - Xcode is Apple’s powerful integrated development environment for creating great apps for Mac, iPhone, and iPad. Xcode 4 includes the Xcode IDE, instruments, iOS Simulator, and the latest Mac OS X and iOS SDKs.