diff --git a/memtester-4.2.1/Makefile b/memtester-4.2.1/Makefile
new file mode 100644
index 0000000..d657ac5
--- /dev/null
+++ b/memtester-4.2.1/Makefile
@@ -0,0 +1,97 @@
+#
+#    Copyright (c) 2010-2011 Nest, Inc.
+#    All rights reserved.
+#
+#    This document is the property of Nest. It is considered
+#    confidential and proprietary information.
+#
+#    This document may not be reproduced or transmitted in any form,
+#    in whole or in part, without the express written permission of
+#    Nest.
+#
+#    Description:
+#      This file is the make file for memtester, a portable userspace
+#      utility for testing the memory subsystem for faults.
+#
+
+BuildConfigSpecialized	:= No
+BuildProductSpecialized	:= No
+
+include pre.mak
+
+PackageName		:= memtester
+
+PackageExtension	:= tar.gz
+PackageSeparator	:= -
+
+PackagePatchArgs	:=
+
+PackageArchive		:= $(PackageName).$(PackageExtension)
+PackageSourceDir	:= $(PackageName)$(PackageSeparator)$(PackageVersion)
+
+PackageBuildMakefile	= $(call GenerateBuildPaths,Makefile)
+
+CleanPaths		+= $(PackageLicenseFile)
+
+all: $(PackageDefaultGoal)
+
+# Generate the package license contents.
+
+$(PackageSourceDir)/COPYING: source
+
+$(PackageLicenseFile): $(PackageSourceDir)/COPYING
+	$(copy-result)
+
+# Extract the source from the archive and apply patches, if any.
+
+$(PackageSourceDir): $(PackageArchive) $(PackagePatchPaths)
+	$(expand-and-patch-package)
+
+# Prepare the sources.
+
+.PHONY: source
+source: | $(PackageSourceDir)
+
+# Patch the sources, if necessary.
+
+.PHONY: patch
+patch: source
+
+# Generate the package build makefile.
+
+$(PackageBuildMakefile): | $(PackageSourceDir) $(BuildDirectory)
+	$(call create-links,$(CURDIR)/$(PackageSourceDir),$(BuildDirectory))
+
+# Configure the source for building.
+
+.PHONY: configure
+configure: source $(PackageBuildMakefile)
+
+# Build the source.
+#
+# We have to unset MAKEFLAGS since they confuse the package build otherwise.
+
+.PHONY: build
+build: configure | $(BuildDirectory)
+	$(Verbose)unset MAKEFLAGS && \
+	$(MAKE) -C $(BuildDirectory) \
+	CC=$(CC) AR=$(AR) RANLIB=$(RANLIB) STRIP=$(STRIP) \
+	all
+
+# Stage the build to a temporary installation area.
+#
+# We have to unset MAKEFLAGS since they confuse the package build otherwise.
+
+.PHONY: stage
+stage: build | $(ResultDirectory)
+	$(Verbose)unset MAKEFLAGS && \
+	$(MAKE) -C $(BuildDirectory) \
+	INSTALLPATH=$(ResultDirectory) \
+	install
+
+clean:
+	$(Verbose)$(RM) $(RMFLAGS) -r $(PackageSourceDir)
+	$(Verbose)$(RM) $(RMFLAGS) -r $(BuildDirectory)
+	$(Verbose)$(RM) $(RMFLAGS) -r $(ResultDirectory)
+
+include post.mak
diff --git a/memtester-4.2.1/memtester.patches.tar.gz b/memtester-4.2.1/memtester.patches.tar.gz
new file mode 100644
index 0000000..04dbbc9
--- /dev/null
+++ b/memtester-4.2.1/memtester.patches.tar.gz
Binary files differ
diff --git a/memtester-4.2.1/memtester.tar.gz b/memtester-4.2.1/memtester.tar.gz
new file mode 100644
index 0000000..ca21e55
--- /dev/null
+++ b/memtester-4.2.1/memtester.tar.gz
Binary files differ
diff --git a/memtester-4.2.1/memtester.url b/memtester-4.2.1/memtester.url
new file mode 100644
index 0000000..333eb54
--- /dev/null
+++ b/memtester-4.2.1/memtester.url
@@ -0,0 +1 @@
+http://pyropus.ca/software/memtester/old-versions/memtester-4.2.1.tar.gz
diff --git a/memtester-4.2.1/memtester.version b/memtester-4.2.1/memtester.version
new file mode 100644
index 0000000..fae6e3d
--- /dev/null
+++ b/memtester-4.2.1/memtester.version
@@ -0,0 +1 @@
+4.2.1