Quant.Cloud is a Real-time Collaboration and Sharing tool for desktop Excel and Online. Simple and lightweight, it does not require you to save your files on OneDrive or have SharePoint. You control what and with who you want to share with.
Supports Excel 2013 and 2016, so add collaboration to legacy spreadsheets with VBA macros, add-ins or large spreadsheets.
Give it a try for free!