diff --git a/README.md b/README.md
index 5c15105..4399baa 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,4 @@
 # avogadrolibs
 
+Avogadro libraries provide 3D rendering, visualization, analysis and data processing useful in computational chemistry, molecular modeling, bioinformatics, materials science, and related areas.
+
diff --git a/avogadrolibs.spec b/avogadrolibs.spec
new file mode 100644
index 0000000..ae29bdd
--- /dev/null
+++ b/avogadrolibs.spec
@@ -0,0 +1,112 @@
+Name:          avogadrolibs
+Version:       1.99.0
+Release:       1mamba
+Summary:       Libraries for computational chemistry, molecular modeling, bioinformatics, materials science, and related areas
+Group:         Graphical Desktop/Applications/Scientific
+Vendor:        openmamba
+Distribution:  openmamba
+Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
+URL:           https://two.avogadro.cc/
+Source:        https://github.com/OpenChemistry/avogadrolibs.git/%{version}/avogadrolibs-%{version}.tar.bz2
+License:       BSD
+## AUTOBUILDREQ-BEGIN
+BuildRequires: glibc-devel
+BuildRequires: libQt5Svg-devel
+BuildRequires: libX11-devel
+BuildRequires: libarchive-devel
+BuildRequires: libfreetype-devel
+BuildRequires: libgcc
+BuildRequires: libglew-devel
+BuildRequires: libglvnd-devel
+BuildRequires: libgomp-devel
+BuildRequires: libhdf5-devel
+BuildRequires: libmsym-devel
+BuildRequires: libpython311-devel
+BuildRequires: libspglib-devel
+BuildRequires: libstdc++6-devel
+BuildRequires: libtbb-devel
+BuildRequires: libvtk-devel
+BuildRequires: pugixml-devel
+BuildRequires: qt5-qtbase-devel
+## AUTOBUILDREQ-END
+BuildRequires: cmake
+BuildRequires: libmmtf-cpp-devel
+BuildRequires: libnlohmann-json-devel
+
+%description
+Avogadro libraries provide 3D rendering, visualization, analysis and data processing useful in computational chemistry, molecular modeling, bioinformatics, materials science, and related areas.
+
+%package -n libavogadro
+Group:         System/Libraries
+Summary:       Libraries for computational chemistry, molecular modeling, bioinformatics, materials science, and related areas
+Obsoletes:     avogadro <= 1.2.0-2mamba
+
+%description -n libavogadro
+Avogadro libraries provide 3D rendering, visualization, analysis and data processing useful in computational chemistry, molecular modeling, bioinformatics, materials science, and related areas.
+This package contains shared libraries for %{name}.
+
+%package -n libavogadro-devel
+Group:         Development/Libraries
+Summary:       Development files for %{name}
+Requires:      libavogadro = %{?epoch:%epoch:}%{version}-%{release}
+
+%description -n libavogadro-devel
+This package contains libraries and header files for developing applications that use %{name}.
+
+%debug_package
+
+%prep
+%setup -q
+
+%build
+%cmake \
+    -DENABLE_TRANSLATIONS=ON \
+    -DUSE_HDF5=ON \
+    -DUSE_VTK=ON \
+    -DUSE_PYTHON=ON \
+    -DUSE_SYSTEM_GENXRDPATTERN=ON \
+    -DUSE_EXTERNAL_NLOHMANN=ON \
+    -DUSE_EXTERNAL_PUGIXML=ON
+
+%cmake_build
+
+%install
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+%cmake_install
+
+%clean
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+
+%post -n libavogadro -p /sbin/ldconfig
+%postun -n libavogadro -p /sbin/ldconfig
+
+%files -n libavogadro
+%defattr(-,root,root)
+%{_libdir}/libAvogadro*.so.*
+%dir %{_libdir}/avogadro2
+%{_libdir}/avogadro2/libgwavi.a
+%dir %{_libdir}/avogadro2/scripts
+%{_libdir}/avogadro2/scripts/*
+%dir %{_libdir}/avogadro2/staticplugins
+%{_libdir}/avogadro2/staticplugins/*.a
+%{_libdir}/libAvogadro*.so
+%dir %{python3_sitearch}/avogadro
+%{python3_sitearch}/avogadro/*
+%dir %{_datadir}/avogadro2
+%{_datadir}/avogadro2/*
+%doc LICENSE
+
+%files -n libavogadro-devel
+%defattr(-,root,root)
+%dir %{_includedir}/avogadro
+%{_includedir}/avogadro/*
+%dir %{_docdir}/AvogadroLibs
+%dir %{_docdir}/AvogadroLibs/avogadrolibs
+%{_docdir}/AvogadroLibs/avogadrolibs/*
+%dir %{_libdir}/cmake/avogadrolibs
+%{_libdir}/cmake/avogadrolibs/*.cmake
+%doc README.md
+
+%changelog
+* Sat May 04 2024 Silvan Calarco <silvan.calarco@mambasoft.it> 1.99.0-1mamba
+- package created using the webbuild interface