diff --git a/easybuild/easyconfigs/d/double-down/double-down-1.1.0-foss-2024a.eb b/easybuild/easyconfigs/d/double-down/double-down-1.1.0-foss-2024a.eb
new file mode 100644
index 000000000000..ef45aca93c38
--- /dev/null
+++ b/easybuild/easyconfigs/d/double-down/double-down-1.1.0-foss-2024a.eb
@@ -0,0 +1,47 @@
+# Based on the EasyConfig templates provided my Alex Domingo
+# Author: J. Saßmannshausen (Imperial College London/UK)
+
+easyblock = 'CMakeMake'
+
+name = 'double-down'
+version = '1.1.0'
+
+homepage = 'https://github.com/pshriwise/double-down'
+description = """
+double-down : A double precision interface to Embree
+
+double-down is a double precision interface to Embree via the
+Mesh Oriented dAtaBase (MOAB).
+"""
+
+toolchain = {'name': 'foss', 'version': '2024a'}
+
+github_account = 'pshriwise'
+source_urls = [GITHUB_SOURCE]
+sources = ['v%(version)s.tar.gz']
+checksums = ['427e5e4ba59c53bddb1991cb34d86a52c11162175bfc6f802abccb5745cea3ba']
+
+builddependencies = [
+    ('binutils', '2.42'),
+    ('CMake', '3.29.3'),
+]
+
+dependencies = [
+    ('Embree', '4.4.0', '', SYSTEM),
+    ('MOAB', '5.5.0'),
+]
+
+post_install_cmds = ['cd %(installdir)s && ln -s tools bin && cd -']
+post_install_msgs = ['Linking tools to bin']
+
+sanity_check_paths = {
+    'files': ['tools/closest_to_location', 'tools/ray_fire',
+              'lib/libdd.so'],
+    'dirs': ['include', 'tools'],
+}
+
+sanity_check_commands = [
+    "ray_fire --help",
+]
+
+moduleclass = 'vis'
diff --git a/easybuild/easyconfigs/m/MOAB/MOAB-5.5.0-foss-2024a.eb b/easybuild/easyconfigs/m/MOAB/MOAB-5.5.0-foss-2024a.eb
new file mode 100644
index 000000000000..ca1fc77d22c8
--- /dev/null
+++ b/easybuild/easyconfigs/m/MOAB/MOAB-5.5.0-foss-2024a.eb
@@ -0,0 +1,67 @@
+# Based on the EasyConfig templates provided my Alex Domingo
+# Author: J. Saßmannshausen (Imperial College London/UK)
+
+easyblock = 'CMakeMake'
+
+name = 'MOAB'
+version = '5.5.0'
+
+homepage = 'https://sigma.mcs.anl.gov/moab-library'
+description = """
+MOAB — The Mesh-Oriented datABase
+
+The Mesh-Oriented datABase (MOAB) is a component for representing and
+evaluating mesh data. MOAB can store and represent structured and
+unstructured meshes consisting of elements in the finite element “zoo”,
+including polygons and polyhedra.
+"""
+
+toolchain = {'name': 'foss', 'version': '2024a'}
+
+# This does not seem to work within EasyBuild, so we include download
+# instructions instead:
+# source_urls = ['https://web.cels.anl.gov/projects/sigma/downloads/moab/']
+sources = [SOURCELOWER_TAR_GZ]
+checksums = ['58969f8a1b209ec9036c08c53a6b7078b368eb3bf99d0368a4de5a2f2a8db678']
+
+download_instructions = """
+The automatic download does not work, so please manually download that file:
+https://web.cels.anl.gov/projects/sigma/downloads/moab/moab-5.5.0.tar.gz
+and place it in the correct folder.
+"""
+
+builddependencies = [
+    ('binutils', '2.42'),
+    ('CMake', '3.29.3'),
+    ('Eigen', '3.4.0'),
+]
+
+dependencies = [
+    ('HDF5', '1.14.5'),
+    ('netCDF', '4.9.2'),
+    ('PnetCDF', '1.14.0'),
+    ('METIS', '5.1.0'),
+    ('ParMETIS', '4.0.3'),
+    ('SCOTCH', '7.0.6'),
+    ('Hypre', '2.32.0'),
+    ('Zoltan', '3.901'),
+]
+
+configopts = '-DENABLE_MPI=ON -DENABLE_HDF5=ON -DENABLE_ZLIB=ON '
+configopts += '-DENABLE_NETCDF=ON -DNETCDF_ROOT=$EBROOTNETCDF '
+configopts += '-DENABLE_PNETCDF=ON -DPNETCDF_ROOT=$EBROOTPNETCDF '
+configopts += '-DENABLE_METIS=ON -DENABLE_PARMETIS=ON '
+configopts += '-DENABLE_ZOLTAN=ON -DZOLTAN_DIR=$EBROOTZOLTAN '
+
+sanity_check_paths = {
+    'files': ['bin/mbpart', f'lib/lib%(name)s.{SHLIB_EXT}'],
+    'dirs': ['include'],
+}
+
+runtest = 'check'
+
+sanity_check_commands = [
+    "mbpart --help",
+]
+
+moduleclass = 'vis'
diff --git a/easybuild/easyconfigs/z/Zoltan/Zoltan-3.901-foss-2024a.eb b/easybuild/easyconfigs/z/Zoltan/Zoltan-3.901-foss-2024a.eb
new file mode 100644
index 000000000000..f0ab6d6f1f5b
--- /dev/null
+++ b/easybuild/easyconfigs/z/Zoltan/Zoltan-3.901-foss-2024a.eb
@@ -0,0 +1,46 @@
+# This easyconfig was created by the BEAR Software team at the University of Birmingham.
+easyblock = 'ConfigureMake'
+
+name = 'Zoltan'
+version = '3.901'
+
+homepage = "https://sandialabs.github.io/Zoltan/"
+description = """Zoltan Dynamic Load Balancing and Graph Algorithm Toolkit"""
+
+toolchain = {'name': 'foss', 'version': '2024a'}
+toolchainopts = {'pic': True}
+
+github_account = 'sandialabs'
+source_urls = [GITHUB_SOURCE]
+sources = ['v%(version)s.tar.gz']
+checksums = ['030c22d9f7532d3076e40cba1f03a63b2ee961d8cc9a35149af4a3684922a910']
+
+dependencies = [
+    ('gzip', '1.13'),
+    ('SCOTCH', '7.0.6'),
+    ('ParMETIS', '4.0.3'),
+]
+
+preconfigopts = 'mkdir build && cd build &&'
+configure_cmd = '../configure'
+configopts = ' '.join([
+    '--enable-gzip',
+    '--with-scotch',
+    '--with-scotch-incdir=$EBROOTSCOTCH/include',
+    '--with-scotch-libdir=$EBROOTSCOTCH/lib',
+    '--with-parmetis',
+    '--with-parmetis-incdir=$EBROOTPARMETIS/include',
+    '--with-parmetis-libdir=$EBROOTPARMETIS/lib',
+    '--disable-examples',
+    '--disable-tests',
+])
+prebuildopts = 'cd build &&'
+buildopts = 'everything'
+preinstallopts = 'cd build &&'
+
+sanity_check_paths = {
+    'files': ['lib/libzoltan.a', 'include/zoltan.h'],
+    'dirs': [],
+}
+
+moduleclass = 'cae'