Soon, #DeltaChat enters the ring. It seems that they are using their internal peer-to-peer technology which is also used for their webxdc apps. This experimental feature is currently available in a branch on GitHub for Android.
To sum it up, it's great that we have all these alternatives.

#ImageMagick screencap: #Firefox with #Sidebery for #VerticalTabs, #IceWM with #ShadesOfGrey on #Arch #GNU+#Linux
#Apps at sight: #Geany #Zathura #Viewnior #DeltaChat #Dino #Jami #LXTerminal #PCManFM #fs
imagemagick.org/
addons.mozilla.org/en-US/firef…
ice-wm.org
archlinux.org/
gnu.org/
geany.org/
pwmt.org/projects/zathura/
siyanpanayotov.com/project/vie…
delta.chat/en/
dino.im/
jami.net/
lxde.org/

I successfully made my own server for @delta! Woo hoo! Only using 215Mb RAM on a VPS so far. #DeltaChat #WhatsApp #Signal