Clean and simple and reference management for the web. Sync your PDFs to Google Drive and cite your papers in Google Docs.
I have found that Paperpile, unlike other competitors like Mendeley, is hazard-free, useful, and simple tool with very desirable features. A large number of paper citing services provided over the internet do not amount to the amount of time that can be saved and seamless organization with Paperpile. I was able to collet papes citing information and the pdf files, which get store in GoogleDrive in a matter of seconds. I am able to set labels that I can track and organize the papers by in an easy to follow format.