Matrix.org / Riot.im, Rocket.chat, and Mattersmost are all popular alternatives. Matrix is what I'm hoping will become more popular since it's more of a decent

Matrix.org / Riot.im, Rocket.chat, and Mattersmost are all popular alternatives. Matrix is what I'm hoping will become more popular since it's more of a decentralized system. Other than inline images, having voice/video calls and screensharing are becoming important as well.