everyone talks about arratai. I am proud to say tried something to the community in 2015 itself.

tamilanjal – launched whatsapp alternative app in 2015, even whatsapp have pdf only docs upload options that time, but our app was able to send word, excel, pdf, ppt, zip files too, end to end encrypted, no awareness those days no support from general public, its was a free app, we even marketed in sathyam tv. it was not a success. we installed the same to few community groups for their private chats. if anyone needs similar app without using whatsapp and/or need a private app for your own community, let me know.i can develop.

https://youtu.be/g-lrGE4nyns
https://youtu.be/ZJ3BbJ4pYxc
https://youtu.be/hwIJQxQ3hbA
https://youtu.be/g-lrGE4nyns

https://www.facebook.com/tamilanjalapp