There are 2 companies tagged `shared-calendar`; raised $17.9M from 7 investors
Open-Xchange raised $17.8M from eCAPITAL Entrepreneurial Partners AG, BayBG, BayTech Venture Capital, and BayTech Venture Capital in 2 rounds.
Open Source Collaboration Software Maker Open-Xchange Secures $9 Million 
techcrunch.com
Easy Bill Online raised $100K from K. Homer, S. Simon, and Everest Group .
Easy Bill Online Completes Seed Funding 
easybillonline.com