diff --git a/d/dotNET-Core-Runtime/dotNET-Core-Runtime-3.1.1.eb b/d/dotNET-Core-Runtime/dotNET-Core-Runtime-3.1.1.eb
new file mode 100644
index 00000000..b2176b5d
--- /dev/null
+++ b/d/dotNET-Core-Runtime/dotNET-Core-Runtime-3.1.1.eb
@@ -0,0 +1,28 @@
+easyblock = 'Tarball'
+
+# note: only works on recent OSs, required local_sufficiently recent glibc (2.14
+# or newer)
+name = 'dotNET-Core-Runtime'
+version = '3.1.1'
+
+homepage = 'https://www.microsoft.com/net/'
+description = """.NET is a free, cross-platform, open source developer platform for building many different types
+ of applications."""
+
+toolchain = SYSTEM
+
+source_urls = ['https://download.visualstudio.microsoft.com/download/pr/e060c2eb-1476-4d70-857c-24f5eead2070/ff0e007b7373c04f754b3818ffdb2134/']
+sources = ['dotnet-runtime-%(version)s-linux-x64.tar.gz']
+
+dependencies = [
+    ('libunwind', '1.2'),
+]
+
+sanity_check_paths = {
+    'files': ['dotnet'],
+    'dirs': ['shared/Microsoft.NETCore.App/%(version)s'],
+}
+
+modextrapaths = {'PATH': ['']}
+
+moduleclass = 'lang'
diff --git a/d/dotNET-Core-SDK/dotNET-Core-SDK-3.1.101.eb b/d/dotNET-Core-SDK/dotNET-Core-SDK-3.1.101.eb
new file mode 100644
index 00000000..73fd22fc
--- /dev/null
+++ b/d/dotNET-Core-SDK/dotNET-Core-SDK-3.1.101.eb
@@ -0,0 +1,26 @@
+easyblock = 'Tarball'
+
+# note: only works on recent OSs, required local_sufficiently recent glibc (2.14
+# or newer)
+name = 'dotNET-Core-SDK'
+version = '3.1.101'
+
+homepage = 'https://www.microsoft.com/net/'
+description = """.NET is a free, cross-platform, open source developer platform for building many different types
+ of applications."""
+
+toolchain = SYSTEM
+
+source_urls = ['https://download.visualstudio.microsoft.com/download/pr/c4b503d6-2f41-4908-b634-270a0a1dcfca/c5a20e42868a48a2cd1ae27cf038044c']
+sources = ['dotnet-sdk-%(version)s-linux-x64.tar.gz']
+
+dependencies = [('libunwind', '1.2')]
+
+sanity_check_paths = {
+    'files': ['dotnet'],
+    'dirs': ['sdk'],
+}
+
+modextrapaths = {'PATH': ['']}
+
+moduleclass = 'lang'