diff --git a/i/impi/impi-2019.7.217-iccifort-2020.1.217.eb b/i/impi/impi-2019.7.217-iccifort-2020.1.217.eb
new file mode 100644
index 00000000..3552e97c
--- /dev/null
+++ b/i/impi/impi-2019.7.217-iccifort-2020.1.217.eb
@@ -0,0 +1,33 @@
+# This is an easyconfig file for EasyBuild, see http://easybuilders.github.io/easybuild
+
+name = 'impi'
+version = '2019.7.217'
+
+homepage = 'https://software.intel.com/en-us/intel-mpi-library/'
+description = "Intel MPI Library, compatible with MPICH ABI"
+
+toolchain = {'name': 'iccifort', 'version': '2020.1.217'}
+
+source_urls = ['https://registrationcenter-download.intel.com/akdlm/irc_nas/tec/16546/']
+sources = ['l_mpi_%(version)s.tgz']
+checksums = ['90383b0023f84ac003a55d8bb29dbcf0c639f43a25a2d8d8698a16e770ac9c07']
+
+dependencies = [
+    # needed by libfabric provider MLX introduced in Intel MPI v2019.6,
+    # https://software.intel.com/en-us/articles/improve-performance-and-stability-with-intel-mpi-library-on-infiniband
+    ('UCX', '1.8.0'),
+]
+
+dontcreateinstalldir = True
+
+components = ['intel-mpi', 'intel-psxe', 'intel-imb']
+
+# set up all the mpi commands to default to intel compilers
+set_mpi_wrappers_all = True
+
+modextravars = {
+    'I_MPI_OFI_PROVIDER': 'MLX',
+    'FI_PROVIDER': 'verbs',
+}
+
+moduleclass = 'mpi'
diff --git a/i/impi/impi-2019.9.304-iccifort-2020.4.304.eb b/i/impi/impi-2019.9.304-iccifort-2020.4.304.eb
new file mode 100644
index 00000000..53af58dd
--- /dev/null
+++ b/i/impi/impi-2019.9.304-iccifort-2020.4.304.eb
@@ -0,0 +1,34 @@
+# IT4Innovations 2021
+# LK
+
+name = 'impi'
+version = '2019.9.304'
+
+homepage = 'https://software.intel.com/en-us/intel-mpi-library/'
+description = "Intel MPI Library, compatible with MPICH ABI"
+
+toolchain = {'name': 'iccifort', 'version': '2020.4.304'}
+
+source_urls = ['https://registrationcenter-download.intel.com/akdlm/irc_nas/tec/17263/']
+sources = ['l_mpi_%(version)s.tgz']
+checksums = ['618a5dc2de54306645e6428c5eb7d267b54b11b5a83dfbcad7d0f9e0d90bb2e7']
+
+dependencies = [
+    # needed by libfabric provider MLX introduced in Intel MPI v2019.6,
+    # https://software.intel.com/en-us/articles/improve-performance-and-stability-with-intel-mpi-library-on-infiniband
+    ('UCX', '1.9.0'),
+]
+
+dontcreateinstalldir = True
+
+components = ['intel-mpi', 'intel-psxe', 'intel-imb']
+
+# set up all the mpi commands to default to intel compilers
+set_mpi_wrappers_all = True
+
+modextravars = {
+    'I_MPI_OFI_PROVIDER': 'MLX',
+    'FI_PROVIDER': 'verbs',
+}
+
+moduleclass = 'mpi'
diff --git a/i/impi/impi-2021.1.1-intel-compilers-2021.1.2.eb b/i/impi/impi-2021.1.1-intel-compilers-2021.1.2.eb
new file mode 100644
index 00000000..60385c6d
--- /dev/null
+++ b/i/impi/impi-2021.1.1-intel-compilers-2021.1.2.eb
@@ -0,0 +1,22 @@
+# IT4Innovations 2021
+# LK
+
+name = 'impi'
+version = '2021.1.1'
+
+homepage = 'https://software.intel.com/content/www/us/en/develop/tools/mpi-library.html'
+description = "Intel MPI Library, compatible with MPICH ABI"
+
+toolchain = {'name': 'intel-compilers', 'version': '2021.1.2'}
+
+# see https://software.intel.com/content/www/us/en/develop/articles/oneapi-standalone-components.html
+source_urls = ['https://registrationcenter-download.intel.com/akdlm/irc_nas/17397/']
+sources = ['l_mpi_oneapi_p_%(version)s.76_offline.sh']
+checksums = ['8b7693a156c6fc6269637bef586a8fd3ea6610cac2aae4e7f48c1fbb601625fe']
+
+modextravars = {
+    'I_MPI_OFI_PROVIDER': 'MLX',
+    'FI_PROVIDER': 'verbs',
+}
+
+moduleclass = 'compiler'
diff --git a/i/intel-compilers/intel-compilers-2021.1.2.eb b/i/intel-compilers/intel-compilers-2021.1.2.eb
new file mode 100644
index 00000000..a1589078
--- /dev/null
+++ b/i/intel-compilers/intel-compilers-2021.1.2.eb
@@ -0,0 +1,34 @@
+# IT4Innovation 2021
+# LK
+
+name = 'intel-compilers'
+version = '2021.1.2'
+
+homepage = 'https://software.intel.com/content/www/us/en/develop/tools/oneapi/hpc-toolkit.html'
+description = "Intel C, C++ & Fortran compilers (classic and oneAPI)"
+
+toolchain = SYSTEM
+
+# see https://software.intel.com/content/www/us/en/develop/articles/oneapi-standalone-components.html
+sources = [
+    {
+        'source_urls': ['https://registrationcenter-download.intel.com/akdlm/irc_nas/17513/'],
+        'filename': 'l_dpcpp-cpp-compiler_p_%(version)s.63_offline.sh',
+    },
+    {
+        'source_urls': ['https://registrationcenter-download.intel.com/akdlm/irc_nas/17508/'],
+        'filename': 'l_fortran-compiler_p_%(version)s.62_offline.sh',
+    },
+]
+checksums = [
+    '68d6cb638091990e578e358131c859f3bbbbfbf975c581fd0b4b4d36476d6f0a',  # l_dpcpp-cpp-compiler_p_2021.1.2.63_offline.sh
+    '29345145268d08a59fa7eb6e58c7522768466dd98f6d9754540d1a0803596829',  # l_fortran-compiler_p_2021.1.2.62_offline.sh
+]
+
+local_gccver = '10.2.0'
+dependencies = [
+    ('GCCcore', local_gccver),
+    ('binutils', '2.35', '', ('GCCcore', local_gccver)),
+]
+
+moduleclass = 'compiler'