File Backup/ Sharing/ Storage Sites
Dropbox - Up to 2GB of free online storage which can be accessed across multiple platforms. Holds large files and collections (PDFs, photos, videos, music). Can also easily share these files with others.
Papers - Specialized program that organizes and syncs research materials (PDFs, websites, patents files) across multiple platforms. Includes many popular search engines (PubMed, Google Scholar, Scopus, etc.).
Google Drive - Up to 15GB of free online storage which can be accessed across multiple platforms. Integrated with other Google products (docs, sheets, slides, forms, photos).
Scheduling
Doodle - A simple tool you can use to schedule meetings with faculty or groups of students and take quick polls or surveys. No downloads are needed.
Collaboration Tools
Google Apps for Work - Includes web-based word processing, spreadsheet, and presentation software. Can be shared easily and edited by multiple individuals at the same time. Google Hangouts+ will run video calls for a gorup.
Twiddla - The free site requires no downloads or plug-ins to access a shared whiteboard or document.