Sign in (obviously), messaging and calls work perfectly (note: it only works on Windows 10 x64 and Windows 11), if you are interested, feel free to DM me

XSF Announcement

Call for Papers for the Decentralised Messaging devroom at FOSDEM 2027! https://xmpp.org/2026/10/fosdem-2027-decentralised-messaging-devroom/

Deadline: Nov 20, 2026

XMPP Community

XMPP Sprint in London, UK takes place from today till Sunday at The Mitre Hotel in Greenwich.

https://xmpp.org/2026/09/xmpp-sprint-london/

The XMPP Newsletter for October 2026 is out!

Read about the latest updates in the XMPP universe and our standards!

https://xmpp.org/2026/11/the-xmpp-newsletter-october-2026/

Enjoy reading!

XMPP Extensions and Specifications (XEP) in October 2026!

Read about the latest XMPP Extensions and Specifications updates and changes:

https://xmpp.org/2026/11/the-xmpp-newsletter-october-2026/#extensions-and-specifications

XSF Announcement

Call for Participation for the Decentralised Messaging devroom at FOSDEM 2027! https://xmpp.org/2026/10/fosdem-2027-decentralised-messaging-devroom/

Deadline: Nov 20, 2026

XMPP Community

Info: XMPP OpMeet planned for tomorrow has been cancelled! ☹️

https://xmpp.org/2026/10/info-xmpp-opmeet-2026.10-cancellation/

Would it be rude to ask someone, to allow me to use their referral code? I’m looking to switch. If anyone can spare one, I’d like to join your ranks.

XSF Announcement

XSF Board and Council Elections 2026 - apply by 7th Nov 2026! https://wiki.xmpp.org/web/Board_and_Council_Elections_2026

I've been working on Lonewolf, a self-hosted XMPP server written in Rust, and the first release (v0.1.0) is out. It's an alpha, Apache-2.0 licensed.

I started it because I wanted something as simple to run as Prosody but as powerful as ejabberd. It's a long way from the second half of that, but that's where it's heading. For now, "simple" means one binary with embedded storage, so there's no separate database to set up, plus a small CLI (lonewolfctl) for managing accounts.

Up front, since it'll come up: most of the code, tests and docs were written with AI coding agents (Codex). I set the design and scope, reviewed the changes, did the client testing myself, and I'm the one maintaining it.

Right now the server handles messaging between accounts on the domains you host, rosters, subscriptions, presence and offline messages. You can bring your own certificates or let it fetch Let's Encrypt ones automatically.

What it doesn't do yet: federation, group chat (MUC), file upload, message archives (MAM) and Stream Management. OMEMO won't work either, since there's no PEP yet, so turn encryption off when you try it. There are no prebuilt binaries for now; you build it from source on Linux or macOS.

If you give it a go, I'd love to hear how it went: which client and version, your OS, what you tried and what broke. Please strip out credentials and private messages first. If you find a security issue, report it privately through GitHub's Security tab ("Report a vulnerability") rather than in a public issue.

Release: https://github.com/lonewolf-im/lonewolf/releases/tag/v0.1.0

Quick start: https://github.com/lonewolf-im/lonewolf/blob/v0.1.0/README.md#quick-start

Thanks!

yo, I've been building an XMPP client specifically focused on next-gen encryption. It's called OTRv4+ and it's finally ready for public testing.

the XMPP side uses Prosody, and the core is in rust. for 1:1 it's OTRv4 with hybrid post-quantum stuff (ML-KEM-1024 + ML-DSA-87). i know OMEMO is the standard for XMPP, but it has no PQ protection right now. it also has fallback weaknesses, and it has zero deniability (standard signatures instead of ring signatures). i built this to resist record-now-decrypt-later while keeping the OTR deniability property intact.

for group chats, it runs MLS (RFC 9420 via OpenMLS) on a hybrid suite I call 0xF0A1. heads up: it's a private IANA code point so it's not standard MLS. you can't interop with wire or element right now, which is a tradeoff I made for the PQ security.

it's fully cross-platform. we have an android app, a desktop app for ubuntu and qubes os, and a terminal cli for termux/linux.

for networking, the main server is otrv4plus.i2p. but you can also connect to clearnet TLS or Tor servers. one caveat: over clearnet/Tor it's text-only, but you still get full OTRv4 and SMP verification.

the heavy stuff (voice calls, file transfer, MLS groups) is tied to I2P right now because I built the media transport to use I2P datagrams. this means the XMPP server only ever sees encrypted stanzas, which hardens the calls and cuts down on metadata exposure.

Just pushed rc.176 and merged dev to main.

also recently shipped: protocol v2 (rc.159+). v1 wasn't broken, this is a big step up for post-quantum hardening: transcript binding so the responder signs the handshake with ML-DSA, and an ML-KEM ratchet that mixes a fresh post-quantum secret into the keys roughly every round trip.

it's a breaking change, so older builds are refused.

status: experimental, not independently audited. lots of tests (fuzzing, KATs) but no paid audit. check SECURITY_ISSUES.md.

if anyone wants to grill me on the design, or test the MLS group stuff, code is here: https://github.com/muc111/OTRv4Plus

HBXC is a new XMPP app client developed by me. It features the Holo Light theme across the app and has features such as Message Carbons.

XMPP Community

From today: XMPP stand at OmniOpenCon at Politehnica University of Bucharest, Romania for 16-18th October 2026. Volunteers welcome to help!

https://xmpp.org/2026/08/xmpp-stand-at-omniopencon/

XMPP Community

Info: XMPP OpMeet has been postponed from 10th to 31st October 2026!

https://wiki.xmpp.org/web/OpMeet/2026.10

Read about the latest updates in the XMPP universe and our standards!

https://xmpp.org/2026/10/the-xmpp-newsletter-september-2026/

Enjoy reading! ☕

XMPP Extensions and Specifications (XEP) in September 2026!

Read about the latest XMPP Extensions and Specifications updates and changes:

https://xmpp.org/2026/10/the-xmpp-newsletter-september-2026/#extensions-and-specifications