Slack

Slack for Nonprofits Slack is a channel-based messaging platform. With Slack, people can work together more effectively, connect all their software tools and services, and find the information they need to do their best work — all within a secure, enterprise-grade environment. Nonprofit teams can use Slack to collaborate better by sharing messages, tools, and files in dedicated channels. Channels can be organized by team, project, or whatever else is relevant to your nonprofit. Through Slack for Nonprofits, eligible organizations can apply for free or discounted upgrades for Slack's Pro and Business+ plans.