DuckDuckGo - The Internet privacy company that empowers you to seamlessly take control of your personal information online, without any tradeoffs.
Overleaf - The online platform for scientific writing. Overleaf is free: start writing now with one click. No sign-up required. Great on your iPad.
Google - Google Search, also referred to as Google Web Search or simply Google, is a web search engine developed by Google. It is the most used search engine on the World Wide Web
TeXworks - The TeXworks project is an effort to build a simple TeX front-end program (working environment)...
Searx - Open source metasearch engine
TeXstudio - TeXstudio is an integrated environment for writing LaTeX documents.