Listy Beta - The things you love, privately saved and beautifully listed

Todoist - Todoist is a to-do list that helps you get organized, at work and in life.

CoffeeRun - Let everyone enter their order for coffee runs

Mendeley - Easily organize your papers, read & annotate your PDFs, collaborate in private or open groups, and securely access your research from everywhere.

TaskPaper - Plain text to-do lists for Mac

Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.