diff --git a/README.md b/README.md
index 89d911c..fcf8629 100644
--- a/README.md
+++ b/README.md
@@ -1,14 +1,14 @@
-# w30 development tool
+# Webxdc Development Tool
 
-this is a little tool to make development of w30 apps easier.
+this is a little tool to make development of webxdc apps easier.
 
-for developing w30 apps,
-just copy the `deltachat.js` from this repo beside
+for developing webxdc apps,
+just copy the `webxdc.js` from this repo beside
 your `index.html` and you are ready to go.
 
 no server or installation required.
 
-- include your `deltachat.js` to your `index.html` as usual
+- include your `webxdc.js` to your `index.html` as usual
 - open your `index.html` from your local disk in your browser,
   tested with Firefox.
 - the emulation layer will add an "add peer" button,
@@ -16,10 +16,8 @@ no server or installation required.
 - once you call sendUpdate() in on peer,
   all peers will get the update with their update listeners.
 
-keep in mind, when bundling your w30 app, deltachat.js is not needed,
+keep in mind, when bundling your webxdc app, `webxdc.js` is not needed,
 it will be provided by the target implementation.
 
 note, that the api is not yet complete,
 this is just a, maybe already useful, proof-of-concept for now.
-
-
diff --git a/index.html b/index.html
index d6e1b81..9831560 100644
--- a/index.html
+++ b/index.html
@@ -2,7 +2,7 @@
 <html>
 <head>
     <meta charset="utf-8"/>
-    <script src="deltachat.js"></script>
+    <script src="webxdc.js"></script>
 </head>
 <body>
 <input id="input" type="text"/>
@@ -12,14 +12,14 @@
 
     function sendMsg() {
         msg = document.getElementById("input").value;
-        window.deltachat.sendUpdate('someone typed "'+msg+'"', {"addr": window.deltachat.selfAddr(), "msg": msg});
+        window.webxdc.sendUpdate('someone typed "'+msg+'"', {"addr": window.webxdc.selfAddr(), "msg": msg});
     }
 
     function receiveUpdate(update) {
         document.getElementById('output').innerHTML += "<strong>&lt;" + update.payload.addr + "&gt;</strong> " + update.payload.msg + "<br>";
     }
 
-    window.deltachat.setUpdateListener(receiveUpdate);
+    window.webxdc.setUpdateListener(receiveUpdate);
 
 </script>
 </body>
diff --git a/deltachat.js b/webxdc.js
similarity index 96%
rename from deltachat.js
rename to webxdc.js
index 9f32022..d80e91f 100644
--- a/deltachat.js
+++ b/webxdc.js
@@ -1,7 +1,7 @@
 // debug friend: document.writeln(JSON.stringify(value));
 // maybe helpful: window.sessionStorage, https://www.w3schools.com/html/html5_webstorage.asp
 
-window.deltachat = (() => {
+window.webxdc = (() => {
     var updateListener = () => {};
 
     return {
@@ -57,7 +57,7 @@ function alterApp() {
 	title = document.createElement('title');
 	document.getElementsByTagName('head')[0].append(title);
     }
-    title.innerText = window.deltachat.selfAddr();
+    title.innerText = window.webxdc.selfAddr();
 
     if (getXdcRoot() == window) {
 	var div = document.createElement('div');