Overleaf - The online platform for scientific writing. Overleaf is free: start writing now with one click. No sign-up required. Great on your iPad.
Kissflow - Kissflow is a workflow tool & business process workflow management software to automate your workflow process. Rated #1 cloud workflow software in Google Apps Marketplace.
TeXworks - The TeXworks project is an effort to build a simple TeX front-end program (working environment)...
Pipefy - Pipefy is a process management software that empowers anyone to create and automate efficient workflows on their own without code.
Texmaker - Texmaker, free cross-platform latex editor
Process Street - Create beautiful rich process documents in a simple to follow checklist format. Fast, free and incredibly simple to use.