diff --git a/.gitmodules b/.gitmodules
index acbc914b34..91f5ca18fa 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,30 +1,30 @@
 [submodule "thirdparty/jbig2dec"]
 	path = thirdparty/jbig2dec
-	url = ../jbig2dec.git
+	url = https://github.com/ArtifexSoftware/jbig2dec
 [submodule "thirdparty/mujs"]
 	path = thirdparty/mujs
-	url = ../mujs.git
+	url = https://github.com/ArtifexSoftware/mujs
 [submodule "thirdparty/freetype"]
 	path = thirdparty/freetype
-	url = ../thirdparty-freetype2.git
+	url = https://github.com/ArtifexSoftware/thirdparty-freetype2
 [submodule "thirdparty/harfbuzz"]
 	path = thirdparty/harfbuzz
-	url = ../thirdparty-harfbuzz.git
+	url = https://github.com/ArtifexSoftware/thirdparty-harfbuzz
 [submodule "thirdparty/jpeg"]
 	path = thirdparty/libjpeg
-	url = ../thirdparty-libjpeg.git
+	url = https://github.com/ArtifexSoftware/thirdparty-libjpeg
 [submodule "thirdparty/lcms2"]
 	path = thirdparty/lcms2
-	url = ../thirdparty-lcms2.git
+	url = https://github.com/ArtifexSoftware/thirdparty-lcms2
 [submodule "thirdparty/openjpeg"]
 	path = thirdparty/openjpeg
-	url = ../thirdparty-openjpeg.git
+	url = https://github.com/ArtifexSoftware/thirdparty-openjpeg
 [submodule "thirdparty/zlib"]
 	path = thirdparty/zlib
-	url = ../thirdparty-zlib.git
+	url = https://github.com/ArtifexSoftware/thirdparty-zlib
 [submodule "thirdparty/curl"]
 	path = thirdparty/curl
-	url = ../thirdparty-curl.git
+	url = https://github.com/ArtifexSoftware/thirdparty-curl
 [submodule "thirdparty/freeglut"]
 	path = thirdparty/freeglut
-	url = ../thirdparty-freeglut.git
+	url = https://git.ghostscript.com/thirdparty-freeglut.git
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000000..efb73eec9a
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,50 @@
+language: cpp
+compiler: gcc
+sudo: require
+dist: trusty
+
+install:
+    - sudo apt-get -y install xorg-dev mesa-common-dev libgl1-mesa-dev libxcursor-dev libxrandr-dev libxinerama-dev libgtk2.0-dev
+
+script:
+  - gcc -Wl,--no-as-needed `pkg-config --cflags --libs gtk+-2.0` platform/x11/file_chooser.c -o file_chooser ; strip file_chooser
+  - ( cd thirdparty/ ; git submodule init ; git submodule update )
+  - make prefix=/usr install DESTDIR=$(readlink -f appdir) ; find appdir/
+
+  - mkdir -p ./appdir/usr/share/hicolor/scalable/apps ; wget -c "https://ghostscript.com/~tor/mupdf-logo/mupdf-logo.svg" -O ./appdir/usr/share/hicolor/scalable/apps/mupdf.svg
+  - rm -rf  ./appdir/usr/include appdir/usr/lib/*.a # Don't need to ship developer files in AppImage
+  
+  - # First, MuPDF
+  - cp -r appdir mupdf.AppDir
+  - cp file_chooser mupdf.AppDir/usr/bin
+  - mkdir -p ./mupdf.AppDir/usr/share/applications ; cp platform/x11/mupdf.desktop ./mupdf.AppDir/usr/share/applications/
+  - rm ./mupdf.AppDir/usr/bin/{mjsgen,mujstest,mupdf-x11,mupdf-x11-curl,muraster,mutool}
+  - wget -c "https://github.com/probonopd/linuxdeployqt/releases/download/continuous/linuxdeployqt-continuous-x86_64.AppImage"
+  - chmod a+x linuxdeployqt*.AppImage
+  - unset QTDIR; unset QT_PLUGIN_PATH ; unset LD_LIBRARY_PATH
+  - export VERSION=$(git rev-parse --short HEAD) # linuxdeployqt uses this for naming the file
+  - ./linuxdeployqt*.AppImage ./mupdf.AppDir/usr/bin/file_chooser -bundle-non-qt-libs
+  - ./linuxdeployqt*.AppImage ./mupdf.AppDir/usr/share/applications/*.desktop -bundle-non-qt-libs
+  - ./linuxdeployqt*.AppImage ./mupdf.AppDir/usr/share/applications/*.desktop -appimage
+  - # Next, mutool
+  - cp -r appdir mutool.AppDir
+  - rm ./mutool.AppDir/usr/bin/{mjsgen,mujstest,muraster,mupdf*}
+  - mkdir -p ./mutool.AppDir/usr/share/applications ; cp platform/x11/mutool.desktop ./mutool.AppDir/usr/share/applications/
+  - ./linuxdeployqt*.AppImage ./mutool.AppDir/usr/share/applications/*.desktop -bundle-non-qt-libs
+  - ./linuxdeployqt*.AppImage ./mutool.AppDir/usr/share/applications/*.desktop -appimage
+  - # Next, mujstest
+  - cp -r appdir mujstest.AppDir
+  - rm ./mujstest.AppDir/usr/bin/{mjsgen,mutool,muraster,mupdf*}
+  - mkdir -p ./mujstest.AppDir/usr/share/applications ; cp platform/x11/mujstest.desktop ./mujstest.AppDir/usr/share/applications/
+  - ./linuxdeployqt*.AppImage ./mujstest.AppDir/usr/share/applications/*.desktop -bundle-non-qt-libs
+  - ./linuxdeployqt*.AppImage ./mujstest.AppDir/usr/share/applications/*.desktop -appimage
+  
+after_success:
+  - rm ./linuxdeployqt*.AppImage
+  - wget -c https://github.com/probonopd/uploadtool/raw/master/upload.sh
+  - bash upload.sh ./*.AppImage*
+  
+branches:
+  except:
+    - # Do not build tags that we create when we upload to GitHub Releases
+    - /^(?i:continuous)$/
diff --git a/platform/x11/file_chooser.c b/platform/x11/file_chooser.c
new file mode 100644
index 0000000000..1c5dcfdd87
--- /dev/null
+++ b/platform/x11/file_chooser.c
@@ -0,0 +1,45 @@
+/* Shows file chooser dialog and returns selected file.
+ * THIS IS A STUB. FEEL FREE TO CHANGE AS YOU SEE FIT.
+ * Compile: 
+ * sudo apt install libgtk2.0-dev
+ * gcc -Wl,--no-as-needed `pkg-config --cflags --libs gtk+-2.0` file_chooser.c -o file_chooser */
+
+#include <gtk/gtk.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <libgen.h>
+#include <dirent.h>
+
+
+int main(int argc, char *argv[])
+{
+    gchar *path;
+    GtkWidget *dialog;
+    int dlg_ret = 0;
+
+    char command[255];
+    char *dir = realpath( "/proc/self/exe", NULL );
+    if (!dir)
+    {
+        exit(1);
+    }
+
+    sprintf(command, "%s/mupdf-gl", dirname(dir));
+
+    gtk_init(&argc, &argv);
+    dialog = gtk_file_chooser_dialog_new("Select file", NULL, GTK_FILE_CHOOSER_ACTION_OPEN, GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL, GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT, NULL);
+    dlg_ret = gtk_dialog_run(GTK_DIALOG(dialog));
+    if(dlg_ret == GTK_RESPONSE_ACCEPT)
+    {
+	path = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(dialog));
+        if( path!=NULL )
+        {
+            return execlp(command, command, path, NULL);
+        }
+    }
+    gtk_widget_destroy(dialog);
+    gtk_exit(0);
+    return 0;
+}
diff --git a/platform/x11/mujstest.desktop b/platform/x11/mujstest.desktop
new file mode 100644
index 0000000000..86aaa917c5
--- /dev/null
+++ b/platform/x11/mujstest.desktop
@@ -0,0 +1,9 @@
+[Desktop Entry]
+Name=mujstest
+Comment=Test tool for PDF files
+Exec=mujstest %f
+Icon=mupdf
+Terminal=true
+Type=Application
+MimeType=application/pdf;application/x-pdf
+Categories=Graphics;
diff --git a/platform/x11/mupdf.desktop b/platform/x11/mupdf.desktop
new file mode 100644
index 0000000000..3495c6693c
--- /dev/null
+++ b/platform/x11/mupdf.desktop
@@ -0,0 +1,9 @@
+[Desktop Entry]
+Name=MuPDF
+Comment=Lightweight PDF, XPS, and E-book viewer
+Exec=file_chooser %f
+Icon=mupdf
+Terminal=false
+Type=Application
+MimeType=application/pdf;application/x-pdf;application/x-cbz;application/oxps;application/vnd.ms-xpsdocument;image/jpeg;image/pjpeg;image/png;image/tiff;image/x-tiff
+Categories=Viewer;Graphics;
diff --git a/platform/x11/mutool.desktop b/platform/x11/mutool.desktop
new file mode 100644
index 0000000000..442cac0ddf
--- /dev/null
+++ b/platform/x11/mutool.desktop
@@ -0,0 +1,9 @@
+[Desktop Entry]
+Name=mutool
+Comment=All purpose tool for dealing with PDF files
+Exec=mutool %f
+Icon=mupdf
+Terminal=true
+Type=Application
+MimeType=application/pdf;application/x-pdf
+Categories=Graphics;