How about Discord (chat + voice)?

[Alexey85]

So there is an application for chatting and voice, Discord. It works in browser but some features are available only in desktop application (push-to-talk, for example). It is entirely free. I like how it looks so far. Maybe we should try it to look for players in chat or speak while playing? I created a temporary server for you to try it out. Also you can easily create your own server for free. I don't want to own and moderate a community server, so I hope there is someone willing to create the server to look after it, moderate and invite everyone to it if community is interested in this sort of thing.

[TheBigG.]

oh they wrote a GUI for mumble-web and now sell it as a completely new product which will beat everything
If it would be open source i would give it a go, but closed source no thanks.

[Alexey85]

oh they wrote a GUI[...]

I checked only web version and UI is quite good looking and convenient if you ask me. If you know a better and free alternative to hang out and look for players, then tell us.

[TheBigG.]

i just have trust issues with companys that give everything for free and are build on venture capital, if they don't end like facebook they end with selling all user data they have to some "advertisement" company that creates stats of that data and send you spam after that.