AFAIK. All major clients for XMPP is open source and gratis.
Two good options for Android is Conversations and Snikket. Both are available on F-Droid and Google Play Store. Conversations on GPS is a donationware version though.
On iOS you have Snikket and Monal.
On the desktop you have Gajim. I think it’s available for Linux, Windows and Mac OS.
You also need an account. Conversations offers accounts for free over at https://account.conversations.im/. There’s probably a lot more services as well.
AFAIK. All major clients for XMPP is open source and gratis.
Two good options for Android is Conversations and Snikket. Both are available on F-Droid and Google Play Store. Conversations on GPS is a donationware version though.
On iOS you have Snikket and Monal.
On the desktop you have Gajim. I think it’s available for Linux, Windows and Mac OS.
You also need an account. Conversations offers accounts for free over at https://account.conversations.im/. There’s probably a lot more services as well.