I would like to share a good application, Typeset (www.typeset.io), when working on papers. 

They also provide regular workshops and detailed guides on research paper writing: 

(a) How to write a research paper abstract? 

(b) Choosing the Right Journal 

(c) Top reasons for research paper rejection 

(d) How to increase citation count of your research paper? 

(e) The 4-Step Guide That Will Get Your Research Published

Thanks