Hello Kang,

I have done GSoC for XMPP Standards Foundation a few years ago. XSF in previous years was working as an umbrella organization for a number of smaller organizations.
Checkout previous years projects https://summerofcode.withgoogle.com/archive/2020/organizations/5153224375402496/#projects

Some XMPP organizations joined previously also alone, without XSF so you can also look for them. As for Java projects go:

Here is Conversations (Android client).
https://summerofcode.withgoogle.com/archive/2018/organizations/6032491081105408/
https://conversations.im/
https://github.com/inputmice/Conversations
I think you can try to contact people in this MUC for conversations: conversations@conference.siacs.eu

Java projects (Server, Client Library and Desktop Client ) are also done by Ignite Realtime Foundation ( I have done my project for them as part of XSF ):
https://www.igniterealtime.org/
https://github.com/igniterealtime
You are welcome to join this MUC: open_chat@conference.igniterealtime.org where I or someone else should answer your questions.
( If you don't have an account you can join anonymously through a web client https://www.igniterealtime.org/support/group_chat.jsp ).

I hope I didn't omit any other Java projects participating in GSoC.

Cheers,
Paweł

pon., 21 gru 2020 o 18:09 Kang Breder <kangbreder@gmail.com> napisał(a):
Hello everyone,

My name is Kang Breder Mbulle. I am a student in the University of Buea, Cameroon and I am interested in contributing code to XMPP as I look forward to participating in GSoC 2021 as a student. I am proficient in Java and I recently started learning Android.

I am happy to be here and I wish to know how I can start contributing to this community.

Thank you,
Breder.