Skyscanner - Skyscanner.com compares over 1000 airlines to find you the cheapest airfares, fast.
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
FlyGRN - Flight search engine that offsets carbon emissions for free
Mendeley - Easily organize your papers, read & annotate your PDFs, collaborate in private or open groups, and securely access your research from everywhere.
bliss - For music lovers, having an enormous selection of music on your computer is a no-brainer. Whether it's to help you get through work or charge through a work-out, you have music readily on hand. Read more about bliss.
Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.