What are some alternatives?
When comparing ArrowChat and MS SharePoint, you can also consider the following products
Ryver - Ryver provides all of your team communications in one place: chats, posts, and files.
Slack - A messaging app for teams who see through the Earth!
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
QnA Maker - Build a Q&A bot from a web page in seconds
Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.
Sharepoint Online - SharePoint is a secure place to store, organize, share, and access information from almost any device.