Overleaf - The online platform for scientific writing. Overleaf is free: start writing now with one click. No sign-up required. Great on your iPad.

SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.

TeXworks - The TeXworks project is an effort to build a simple TeX front-end program (working environment)...

Moz - Backed by industry-leading data and the largest community of SEOs on the planet, Moz builds tools that make inbound marketing easy.

TeXstudio - TeXstudio is an integrated environment for writing LaTeX documents.

SEOquake - SEOquake provides a browser extension to conduct on-page SEO audit.