diff --git a/src/nmaster-ncol.c b/src/nmaster-ncol.c
new file mode 100644
index 0000000..0f6a7e2
--- /dev/null
+++ b/src/nmaster-ncol.c
@@ -0,0 +1,163 @@
+enum {MaxMon = 8};
+static int nmasters[MaxMon];
+static int initnm = 0;
+
+static void
+initnmaster(void) {
+	int i;
+
+	if(initnm)
+		return;
+	for(i = 0; i < MaxMon; i++)
+		nmasters[i] = nmaster;
+	initnm = 1;
+}
+
+static void
+incnmaster(const Arg *arg) {
+	if(!arg)
+		return;
+	nmasters[0] += arg->i;
+	if(nmasters[0] < 0)
+		nmasters[0] = 0;
+	arrange();
+}
+
+static void
+setnmaster(const Arg *arg) {
+	if(!arg)
+		return;
+	nmasters[0] = arg->i > 0 ? arg->i : 0;
+	arrange();
+}
+
+static void
+ntile() {
+	int x, y, h, w, mw, nm;
+	unsigned int i, n;
+	Client *c;
+
+	initnmaster();
+	for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next), n++);
+	c = nexttiled(clients);
+	nm = nmasters[0];
+	if(nm > n)
+		nm = n;
+	/* master */
+	if(nm > 0) {
+		mw = mfact * ww;
+		h = wh / nm;
+		if(h < bh)
+			h = wh;
+		y = wy;
+		for(i = 0; i < nm; i++, c = nexttiled(c->next)) {
+			resize(c, wx, y, (n == nm ? ww : mw) - 2 * c->bw,
+			       ((i + 1 == nm) ? wy + wh - y : h) - 2 * c->bw);
+			if(h != wh)
+				y = c->y + HEIGHT(c);
+		}
+		n -= nm;
+	} else
+		mw = 0;
+	if(n == 0)
+		return;
+	/* tile stack */
+	x = wx + mw;
+	y = wy;
+	w = ww - mw;
+	h = wh / n;
+	if(h < bh)
+		h = wh;
+	for(i = 0; c; c = nexttiled(c->next), i++) {
+		resize(c, x, y, w - 2 * c->bw,
+		       ((i + 1 == n) ? wy + wh - y : h) - 2 * c->bw);
+		if(h != wh)
+			y = c->y + HEIGHT(c);
+	}
+}
+
+static void
+ncol() {
+	int x, y, h, w, mw, nm;
+	unsigned int i, n;
+	Client *c;
+
+	initnmaster();
+	for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next), n++);
+	c = nexttiled(clients);
+	nm = nmasters[0];
+	if(nm > n)
+		nm = n;
+	/* master */
+	if(nm > 0) {
+		mw = (n == nm) ? ww : mfact * ww;
+		w = mw / nm;
+        x = wx;
+		for(i = 0; i < nm; i++, c = nexttiled(c->next)) {
+			resize(c, x, wy, w - 2 * c->bw, wh - 2 * c->bw);
+            x = c->x + WIDTH(c);
+		}
+		n -= nm;
+	} else
+		mw = 0;
+	if(n == 0)
+		return;
+	/* tile stack */
+	x = wx + mw;
+	y = wy;
+	w = ww - mw;
+	h = wh / n;
+	if(h < bh)
+		h = wh;
+	for(i = 0; c; c = nexttiled(c->next), i++) {
+		resize(c, x, y, w - 2 * c->bw,
+		       ((i + 1 == n) ? wy + wh - y : h) - 2 * c->bw);
+		if(h != wh)
+			y = c->y + HEIGHT(c);
+	}
+}
+
+static void
+nbstack() {
+	int x, y, h, w, mh, nm;
+	unsigned int i, n;
+	Client *c;
+
+	initnmaster();
+	for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next), n++);
+	c = nexttiled(clients);
+	nm = nmasters[0];
+	if(nm > n)
+		nm = n;
+	/* master */
+	if(nm > 0) {
+		mh = mfact * wh;
+		w = ww / nm;
+		if(w < bh)
+			w = ww;
+		x = wx;
+		for(i = 0; i < nm; i++, c = nexttiled(c->next)) {
+			resize(c, x, wy, ((i + 1 == nm) ? wx + ww - x : w) - 2 * c->bw,
+			       (n == nm ? wh : mh) - 2 * c->bw);
+			if(w != ww)
+				x = c->x + WIDTH(c);
+		}
+		n -= nm;
+	} else
+		mh = 0;
+	if(n == 0)
+		return;
+	/* tile stack */
+	x = wx;
+	y = wy + mh;
+	w = ww / n;
+	h = wh - mh;
+	if(w < bh)
+		w = ww;
+	for(i = 0; c; c = nexttiled(c->next), i++) {
+		resize(c, x, y, ((i + 1 == n) ? wx + ww - x : w) - 2 * c->bw,
+		       h - 2 * c->bw);
+		if(w != ww)
+			x = c->x + WIDTH(c);
+	}
+}