diff --git a/Makefile b/Makefile
index c6686557f..6a7eb5f43 100644
--- a/Makefile
+++ b/Makefile
@@ -603,9 +603,7 @@ help:
 	@$(ECHO) "     arm_sdk_install      - Install the GNU ARM gcc toolchain"
 	@$(ECHO) "     qt_sdk_install       - Install the QT development tools"
 	@$(ECHO) "     nsis_install         - Install the NSIS Unicode (Windows only)"
-	@$(ECHO) "     sdl_install          - Install the SDL library (Windows only)"
 	@$(ECHO) "     mesawin_install      - Install the OpenGL32 DLL (Windows only)"
-	@$(ECHO) "     openssl_install      - Install the OpenSSL libraries (Windows only)"
 	@$(ECHO) "     uncrustify_install   - Install the Uncrustify source code beautifier"
 	@$(ECHO) "     doxygen_install      - Install the Doxygen documentation generator"
 	@$(ECHO) "     gtest_install        - Install the GoogleTest framework"
diff --git a/ground/gcs/gcs.pri b/ground/gcs/gcs.pri
index 150eaca0a..ececefc72 100644
--- a/ground/gcs/gcs.pri
+++ b/ground/gcs/gcs.pri
@@ -171,12 +171,6 @@ macx {
     !isEqual(GCS_SOURCE_TREE, $$GCS_BUILD_TREE):copydata = 1
 
     win32 {
-        SDL_DIR = $$(SDL_DIR)
-        isEmpty(SDL_DIR):SDL_DIR = $${TOOLS_DIR}/SDL-1.2.15
-
-        OPENSSL_DIR = $$(OPENSSL_DIR)
-        isEmpty(OPENSSL_DIR):OPENSSL_DIR = $${TOOLS_DIR}/openssl-1.0.1e-win32
-
         MESAWIN_DIR = $$(MESAWIN_DIR)
         isEmpty(MESAWIN_DIR):MESAWIN_DIR = $${TOOLS_DIR}/mesawin
 
@@ -259,4 +253,3 @@ macx {
 # use ccache when available
 QMAKE_CC = $$(CCACHE) $$QMAKE_CC
 QMAKE_CXX = $$(CCACHE) $$QMAKE_CXX
-
diff --git a/make/tools.mk b/make/tools.mk
index c61fcb64a..f12e18b0a 100644
--- a/make/tools.mk
+++ b/make/tools.mk
@@ -11,8 +11,6 @@
 #    arm_sdk_install
 #    qt_sdk_install
 #    nsis_install (Windows only)
-#    sdl_install (Windows only)
-#    openssl_install (Windows only)
 #    mesawin_install (Windows only)
 #    uncrustify_install
 #    doxygen_install
@@ -117,8 +115,6 @@ else ifeq ($(UNAME), Windows)
     QT_SDK_MD5_URL := http://download.qt.io/official_releases/qt/5.5/5.5.1/qt-opensource-windows-x86-mingw492-5.5.1.exe.md5
     QT_SDK_ARCH    := mingw492_32
     NSIS_URL       := http://librepilot.github.io/tools/nsis-2.46-unicode.tar.bz2
-    SDL_URL        := http://librepilot.github.io/tools/SDL-devel-1.2.15-mingw32.tar.gz
-    OPENSSL_URL    := http://librepilot.github.io/tools/openssl-1.0.1e-win32.tar.bz2
     UNCRUSTIFY_URL := http://librepilot.github.io/tools/uncrustify-0.60-windows.tar.bz2
     DOXYGEN_URL    := http://librepilot.github.io/tools/doxygen-1.8.3.1-windows.tar.bz2
     MESAWIN_URL    := http://librepilot.github.io/tools/mesawin.tar.gz
@@ -153,9 +149,6 @@ else ifeq ($(UNAME), Windows)
     # When changing PYTHON_DIR, you must also update it in ground/gcs/src/python.pri
     PYTHON_DIR   := $(QT_SDK_DIR)/Tools/$(QT_SDK_ARCH)/opt/bin
     NSIS_DIR     := $(TOOLS_DIR)/nsis-2.46-unicode
-    # When changing SDL_DIR or OPENSSL_DIR, you must also update them in ground/gcs/gcs.pri
-    SDL_DIR      := $(TOOLS_DIR)/SDL-1.2.15
-    OPENSSL_DIR  := $(TOOLS_DIR)/openssl-1.0.1e-win32
     MESAWIN_DIR  := $(TOOLS_DIR)/mesawin
     OSG_SDK_DIR  := $(OSG_TOOLS_DIR)/osg-3.4-mingw492_32-qt-5.5.1
     OSGEARTH_SDK_DIR  := $(OSG_TOOLS_DIR)/osgearth-2.7-mingw492_32-qt-5.5.1
@@ -641,29 +634,6 @@ nsis_version:
 
 endif
 
-##############################
-#
-# SDL (Windows only)
-#
-##############################
-
-ifeq ($(UNAME), Windows)
-
-$(eval $(call TOOL_INSTALL_TEMPLATE,sdl,$(SDL_DIR),$(SDL_URL),,$(notdir $(SDL_URL))))
-
-ifeq ($(shell [ -d "$(SDL_DIR)" ] && $(ECHO) "exists"), exists)
-    export SDL_DIR := $(SDL_DIR)
-else
-    # not installed, hope it's in the path...
-    $(info $(EMPTY) WARNING     $(call toprel, $(SDL_DIR)) not found (make sdl_install), using system PATH)
-endif
-
-.PHONY: sdl_version
-sdl_version:
-	-$(V1) $(ECHO) "SDL 1.2.15"
-
-endif
-
 ##################################
 #
 # Mesa OpenGL DLL (Windows only)
@@ -687,31 +657,6 @@ mesawin_version:
 
 endif
 
-##############################
-#
-# OpenSSL (Windows only)
-#
-##############################
-
-ifeq ($(UNAME), Windows)
-
-$(eval $(call TOOL_INSTALL_TEMPLATE,openssl,$(OPENSSL_DIR),$(OPENSSL_URL),,$(notdir $(OPENSSL_URL))))
-
-ifeq ($(shell [ -d "$(OPENSSL_DIR)" ] && $(ECHO) "exists"), exists)
-    export OPENSSL := $(OPENSSL_DIR)/bin/openssl
-    export OPENSSL_CONF := $(OPENSSL_DIR)/bin/openssl.cfg
-    export OPENSSL_DIR
-else
-    # not installed, hope it's in the path...
-    # $(info $(EMPTY) WARNING     $(call toprel, $(OPENSSL_DIR)) not found (make openssl_install), using system PATH)
-endif
-
-.PHONY: openssl_version
-openssl_version:
-	-$(V1) $(ECHO) "OpenSSL `$(OPENSSL) version`"
-
-endif
-
 ##############################
 #
 # Uncrustify