FileProInfo - It's All About Files, Software, Online Tools - 100% Free
Niko Niko - Employee Engagement
File-Extensions.org - Large computer file extension library with detailed explanation of each file type with links to download free or associated software programs.
Information is Beautiful - Ideas, issues, knowledge, data — visualized!
GroupDocs - GroupDocs is a web-based service for online document sharing, collaboration and management.
#TrelloAnnualReport - Get some fun free stats for your team's year on Trello!