diff --git a/kintox11/binary/appnames.csv b/kintox11/binary/appnames.csv
new file mode 100644
index 0000000..f66a63c
--- /dev/null
+++ b/kintox11/binary/appnames.csv
@@ -0,0 +1,8 @@
+Gnome-terminal
+konsole
+terminator
+sakura
+guake
+tilda
+xterm
+eterm
\ No newline at end of file
diff --git a/kintox11/binary/kintox11_ubuntu19-10 b/kintox11/binary/kintox11_ubuntu19-10
new file mode 100755
index 0000000..c8daa56
Binary files /dev/null and b/kintox11/binary/kintox11_ubuntu19-10 differ
diff --git a/kintox11/src/kintox11.c b/kintox11/src/kintox11.c
new file mode 100644
index 0000000..ed7d7d4
--- /dev/null
+++ b/kintox11/src/kintox11.c
@@ -0,0 +1,249 @@
+// -*- coding:utf-8-unix; mode:c; -*-
+// Kinto x11 command line
+/*
+  Reference material
+  get the active window on X window system
+  http://k-ui.jp/blog/2012/05/07/get-active-window-on-x-window-system/
+ */
+// To compile
+// gcc active_window.c -lX11 -lXmu
+//
+//
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <locale.h>
+#include <string.h>
+#include <ctype.h>
+#include <X11/Xlib.h>           // `apt-get install libx11-dev`
+#include <X11/Xmu/WinUtil.h>    // `apt-get install libxmu-dev`
+#define LSIZ 128 // buffer
+#define RSIZ 50 // array size
+
+Bool xerror = False;
+
+int strcicmp(char const *a, char const *b)
+{
+    for (;; a++, b++) {
+        int d = tolower((unsigned char)*a) - tolower((unsigned char)*b);
+        if (d != 0 || !*a)
+            return d;
+    }
+}
+
+Display* open_display(){
+  Display* d = XOpenDisplay(NULL);
+  if(d == NULL){
+    printf("fail to open X server display...\n");
+    exit(1);
+  }
+  return d;
+}
+
+int handle_error(Display* display, XErrorEvent* error){
+  printf("ERROR: X11 error\n");
+  xerror = True;
+  return 1;
+}
+
+Window get_focus_window(Display* d){
+  Window w;
+  int revert_to;
+  XGetInputFocus(d, &w, &revert_to); // see man
+  if(xerror){
+    printf("Error getting focused window\n");
+    exit(1);
+  }else if(w == None){
+    printf("no focus window\n");
+    exit(1);
+  }
+
+  return w;
+}
+
+// get the top window.
+// a top window have the following specifications.
+//  * the start window is contained the descendent windows.
+//  * the parent window is the root window.
+Window get_top_window(Display* d, Window start){
+  Window w = start;
+  Window parent = start;
+  Window root = None;
+  Window *children;
+  unsigned int nchildren;
+  Status s;
+
+  while (parent != root) {
+    w = parent;
+    s = XQueryTree(d, w, &root, &parent, &children, &nchildren); // see man
+
+    if (s)
+      XFree(children);
+
+    if(xerror){
+      printf("failed to get top window\n");
+      exit(1);
+    }
+  }
+
+  return w;
+}
+
+// search a named window (that has a WM_STATE prop)
+// on the descendent windows of the argment Window.
+Window get_named_window(Display* d, Window start){
+  Window w;
+  w = XmuClientWindow(d, start); // see man
+  if(w == start)
+  return w;
+}
+
+// (XFetchName cannot get a name with multi-byte chars)
+void print_window_name(Display* d, Window w){
+  XTextProperty prop;
+  Status s;
+
+  s = XGetWMName(d, w, &prop); // see man
+  if(!xerror && s){
+    int count = 0, result;
+    char **list = NULL;
+    result = XmbTextPropertyToTextList(d, &prop, &list, &count); // see man
+    if(result == Success){
+      printf("\t%s\n", list[0]);
+    }else{
+      // printf("ERROR: XmbTextPropertyToTextList\n");
+    }
+  }else{
+    // printf("ERROR: XGetWMName\n");
+  }
+}
+
+void print_window_class(Display* d, Window w){
+  Status s;
+  XClassHint* class;
+
+  class = XAllocClassHint(); // see man
+  if(xerror){
+    // printf("ERROR: XAllocClassHint\n");
+  }
+
+  s = XGetClassHint(d, w, class); // see man
+  if(xerror || s){
+    // printf("\tname: %s\n\tclass: %s\n", class->res_name, class->res_class);
+    printf("%s\n", class->res_class);
+  }else{
+    printf("ERROR: XGetClassHint\n");
+  }
+}
+
+const char * str_window_class(Display* d, Window w){
+  Status s;
+  XClassHint* class;
+
+  class = XAllocClassHint(); // see man
+  if(xerror){
+    // printf("ERROR: XAllocClassHint\n");
+  }
+
+  s = XGetClassHint(d, w, class); // see man
+  if(xerror || s){
+    char * app_class;
+    app_class = malloc(sizeof(char)*100);
+    strcpy(app_class,class->res_class);
+    // printf("\tname: %s\n\tclass: %s\n", class->res_name, class->res_class);
+    return app_class;
+  }else{
+    char * error_msg;
+    error_msg = malloc(sizeof(char)*50);
+    strcpy(error_msg, "ERROR: XGetClassHint");
+    return error_msg;
+  }
+}
+
+void print_window_info(Display* d, Window w){
+  print_window_class(d, w);
+}
+
+int main(void){
+
+  char line[RSIZ][LSIZ];
+  FILE *fptr = NULL; 
+  int i = 0;
+  int tot = 0;
+
+  fptr = fopen("./appnames.csv", "r");
+  while(fgets(line[i], LSIZ, fptr)) 
+  {
+      line[i][strlen(line[i])] = '\0';
+      if( line[i][strlen(line[i])-1] == '\n' )
+          line[i][strlen(line[i])-1] = 0;
+      i++;
+  }
+  tot = i;
+
+  // printf("\n The content of the file %s  are : \n","./appnames.csv");    
+  // for(i = 0; i < tot; ++i)
+  // {
+  //     printf("%s\n", line[i]);
+  // }
+  // printf("\n");
+
+  Display* d;
+  Window w;
+
+  // for XmbTextPropertyToTextList
+  setlocale(LC_ALL, ""); // see man locale
+
+  d = open_display();
+  XSelectInput(d, DefaultRootWindow(d), SubstructureNotifyMask);
+  XSetErrorHandler(handle_error);
+
+  char * prior_app;
+  prior_app = malloc(sizeof(char)*100);
+  strcpy(prior_app,"none");
+
+  int remap_bool = 2;
+
+  // get active window
+  w = get_focus_window(d);
+  w = get_top_window(d, w);
+  w = get_named_window(d, w);
+
+  for (;;)
+  {
+
+    if(strcmp(str_window_class(d, w),prior_app)){
+      int len = sizeof(line)/sizeof(line[0]);
+      // printf("length: %d\n",len);
+      int i;
+      for(i = 0; i < len; ++i){
+        // printf("i: %d\n",i);
+        // printf(strcicmp(line[i], str_window_class(d, w)));
+        if((strcicmp(line[i], str_window_class(d, w)) == 0 && (remap_bool == 1 || remap_bool == 2))) {
+            // printf("Gotcha!\n");
+            // printf("%s - prior app %s\n",str_window_class(d, w),prior_app);
+            printf("%s\n","term");
+            remap_bool = 0;
+            break;
+        }
+        else if((strcicmp(line[i], str_window_class(d, w)) == 0 && remap_bool == 0)){
+          break;
+        }
+        else if (i == 49 && (remap_bool == 0 || remap_bool == 2)){
+          printf("%s\n","gui");
+          // printf("no match - %s - prior app %s\n",str_window_class(d, w),prior_app);
+          remap_bool = 1;
+          break;
+        }
+      }
+    }
+    strcpy(prior_app,str_window_class(d, w));
+
+    XEvent e;
+    XNextEvent(d, &e);
+    // get active window
+    w = get_focus_window(d);
+    w = get_top_window(d, w);
+    w = get_named_window(d, w);
+  }
+}
\ No newline at end of file