Based on our record, FireRTC seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
I personally use firertc.com since its free, although I'm not sure if the sign up is open anymore. Source: about 3 years ago
Slack - A messaging app for teams who see through the Earth!
Call2friends - High-quality cheap and free international calls online to any mobile or landline numbers from internet and free calling app - cheaper than other VoiP providers. Try it now!
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Make Free Calls Online - Make Free Calls Online is a web application that, as the name suggests, allows its users to make international and local calls for free.
Mattermost - Mattermost is an open source alternative to Slack.
Poptox - Poptox is a web application where you can communicate with people in every corner of the world.