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About the developer

408 Stars 71 Forks GNU General Public License v3.0 914 Commits 85 Opened issues


No longer maintained - Desktop client for the Matrix protocol (active fork

Services available


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Build Status Build status Stable Version Nightly Chat on Matrix AUR: nheko

The motivation behind the project is to provide a native desktop app for Matrix that feels more like a mainstream chat app (Riot, Telegram etc) and less like an IRC client.

Note regarding End-to-End encryption

Currently the implementation is at best a proof of concept and it should only be used for testing purposes.


Most of the features you would expect from a chat application are missing right now but we are getting close to a more feature complete client. Specifically there is support for: - E2E encryption (text messages only: attachments are currently sent unencrypted). - User registration. - Creating, joining & leaving rooms. - Sending & receiving invites. - Sending & receiving files and emoji (inline widgets for images, audio and file messages). - Typing notifications. - Username auto-completion. - Message & mention notifications. - Redacting messages. - Read receipts. - Basic communities support. - Room switcher (ctrl-K). - Light, Dark & System themes.



Releases for Linux (AppImage), macOS (disk image) & Windows (x64 installer) can be found in the Github releases.


Arch Linux

pacaur -S nheko # nheko-git


sudo dnf install nheko

Gentoo Linux

sudo layman -a matrix
sudo emerge -a nheko

Alpine Linux (and postmarketOS)

Make sure you have the testing repositories from

enabled. Note that this is not needed on postmarketOS.
sudo apk add nheko


flatpak install flathub io.github.mujx.Nheko

macOS (10.12 and above)

with macports :

sudo port install nheko

Build Requirements

  • Qt5 (5.7 or greater). Qt 5.7 adds support for color font rendering with Freetype, which is essential to properly support emoji.
  • CMake 3.1 or greater.
  • mtxclient
  • LMDB
  • cmark
  • Boost 1.66 or greater.
  • libolm
  • libsodium
  • spdlog
  • A compiler that supports C++ 14:
    • Clang 5 (tested on Travis CI)
    • GCC 7 (tested on Travis CI)
    • MSVC 19.13 (tested on AppVeyor)


If you don't want to install any external dependencies, you can generate an AppImage locally using docker.

make docker-app-image
Arch Linux
sudo pacman -S qt5-base \
    qt5-tools \
    qt5-multimedia \
    qt5-svg \
    cmake \
    gcc \
    fontconfig \
    lmdb \
    cmark \
    boost \
Gentoo Linux
sudo emerge -a ">=dev-qt/qtgui-5.7.1" media-libs/fontconfig
Ubuntu (e.g 14.04)
sudo add-apt-repository ppa:beineri/opt-qt592-trusty
sudo add-apt-repository ppa:george-edison55/cmake-3.x
sudo add-apt-repository ppa:ubuntu-toolchain-r-test
sudo apt-get update
sudo apt-get install -y g++-7 qt59base qt59svg qt59tools qt59multimedia cmake liblmdb-dev libsodium-dev 
macOS (Xcode 8 or later)
brew update
brew install qt5 lmdb cmake llvm libsodium spdlog boost cmark
  1. Install Visual Studio 2017's "Desktop Development" and "Linux Development with C++" (for the CMake integration) workloads.

  2. Download the latest Qt for windows installer and install it somewhere. Make sure to install the

    MSVC 2017 64-bit
    toolset for at least Qt 5.9 (lower versions does not support VS2017).
  3. Install dependencies with

    . You can simply clone it into a subfolder of the root nheko source directory.
git clone http:\\\Microsoft\vcpkg
cd vcpkg
.\vcpkg install --triplet x64-windows \
    boost-asio \
    boost-beast \
    boost-iostreams \
    boost-random \
    boost-signals2 \
    boost-system \
    boost-thread \
    cmark \
    libsodium \
    lmdb \
    openssl \
  1. Install dependencies not managed by vcpkg. (libolm, libmtxclient, libmatrix_structs)

Inside the project root run the following (replacing the path to vcpkg as necessary).

cmake -G "Visual Studio 15 2017 Win64" -Hdeps -B.deps
cmake --build .deps --config Release
cmake --build .deps --config Debug


First we need to install the rest of the dependencies that are not available in our system

cmake -Hdeps -B.deps \
    -DUSE_BUNDLED_BOOST=OFF # if we already have boost & spdlog installed.
cmake --build .deps

We can now build nheko by pointing it to the path that we installed the dependencies.

cmake -H. -Bbuild -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=.deps/usr
cmake --build build

If the build fails with the following error ``` Could not find a package configuration file provided by "Qt5Widgets" with any of the following names:

Qt5WidgetsConfig.cmake qt5widgets-config.cmake ``

You might need to pass
-DCMAKEPREFIXPATH` to cmake to point it at your qt5 install.

e.g on macOS

cmake -H. -Bbuild -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH=$(brew --prefix qt5)
cmake --build build


binary will be located in the


After installing all dependencies, you need to edit the

to be able to load and compile nheko within Visual Studio.

You need to fill out the paths for the

and the
. The toolchain file should point to the
and the Qt5 dir to the

Examples for the paths are: -


Now right click into the root nheko source directory and choose

Open in Visual Studio
. You can choose the build type Release and Debug in the top toolbar. After a successful CMake generation you can select the
as the run target. Now choose
Build all
in the CMake menu or press
to compile the executable.

To be able to run the application the last step is to install the needed Qt dependencies next to the nheko binary.

Start the "Qt x.xx.x 64-bit for Desktop (MSVC 2017)" command promt and run

cd \build-vc\Release\Release
windeployqt nheko.exe

The final binary will be located inside

for the Release build and
for the Debug build.




Here is a screen shot to get a feel for the UI, but things will probably change.


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