PureVPN is a commercial virtual private network service owned by GZ Systems Ltd.

Get a head start for you research and finally beat the paper chaos on your desk. With Paperpile you have all your research PDFs in one place — nice and tidy. Paperpile makes it easier than ever to collect, manage, read, and annotate your papers.

Grammarly is a technology company that develops a digital writing tool using artificial intelligence and natural language processing. The Grammarly Keyboard goes where you go to make sure your writing always looks great. Whether you’re typing up an urgent email, an important LinkedIn message, or an essential Facebook post, Grammarly lets you write from your mobile device with confidence.

LastPass is a password manager that securely stores your passwords and personal information in a secure vault. As you visit apps and sites, LastPass autofills your login credentials. All you have to do is remember your LastPass master password, and LastPass will autofill logins for you.