Nextiva vs. Slack

Connect your phone system with business apps, AI, and automation on a single platform — to run your business.

Free trial; $25.95/mo after visit website

Slack

Slack is where the people you need, the information you share, and the tools you use come together to get things done.

Free; paid from $8/mo visit website

All-in-one voice and text chat for gamers that's free, secure, and works on both your desktop and phone.

Free visit website

Fleep

A flexible messenger that integrates with email and lets you store and share files easily.

Free; paid from €60/y visit website

Flock

All your work in one place.

Free; paid from $6/mo visit website

Gitter

A chat and networking platform that helps to manage, grow and connect communities.

Free visit website

Team collaboration and messaging that deploys to cloud infrastructure under IT control, as well as on-prem.

Free; paid from $39/y visit website

Rocket.Chat is free, unlimited and open source team communication.

Open Source; paid from $3/mo visit website