JS Apis.com

This site/cdn is an alternative for self-hosted open-source JavaScript libraries and for The Google Hosted Libraries (ajax.googleapis.com). There are two options:
If you are already using Google just replace ajax.googleapis.com in your code with ajax.jsapis.com (recommended) or ajaxeu.jsapis.com.
More information about the available libraries:

CesiumJS
D3.js
Dojo
Ext Core
Hammer.JS
Indefinite Observable
jQuery
jQuery Mobile
jQuery UI
List.js
Material Motion
Model-Viewer
MooTools
Myanmar Tools
Prototype
script.aculo.us
Shaka Player
SPF
SWFObject
three.js
Web Font Loader

Why JS Apis.com?
This project started by EU citizens who take privacy (and the GDPR) seriously and don't want to share their users data with Google or outside of the EU.

CesiumJS

snippet:
<script src="https://ajax.jsapis.com/ajax/libs/cesiumjs/1.78/Build/Cesium/Cesium.js"></script>
site:
github.com/CesiumGS/cesium
versions:
1.78

D3.js

snippet:
<script src="https://ajax.jsapis.com/ajax/libs/d3js/7.8.4/d3.min.js"></script>
site:
d3js.org
versions:
7.8.4, 7.8.3, 7.8.2, 7.8.1, 7.8.0, 7.7.0, 7.6.1, 7.4.2, 7.0.0
6.7.0, 6.6.2, 6.6.1, 6.6.0, 6.5.0, 6.3.1, 6.2.0, 6.1.1
5.16.0, 5.15.1, 5.15.0, 5.14.2, 5.12.0, 5.11.0, 5.9.7, 5.9.2, 5.9.0, 5.8.0, 5.7.0
4.13.0
3.5.17

Dojo

snippet:
<script src="https://ajax.jsapis.com/ajax/libs/dojo/1.13.0/dojo/dojo.js"></script>
site:
dojotoolkit.org
versions:
1.13.0, 1.12.3, 1.12.2, 1.12.1, 1.11.5, 1.11.4, 1.11.3, 1.11.2, 1.11.1, 1.10.9, 1.10.8, 1.10.7, 1.10.6, 1.10.5, 1.10.4, 1.10.3, 1.10.2, 1.10.1, 1.10.0, 1.9.11, 1.9.10, 1.9.9, 1.9.8, 1.9.7, 1.9.6, 1.9.5, 1.9.4, 1.9.3, 1.9.2, 1.9.1, 1.9.0, 1.8.14, 1.8.13, 1.8.12, 1.8.11, 1.8.10, 1.8.9, 1.8.8, 1.8.7, 1.8.6, 1.8.5, 1.8.4, 1.8.3, 1.8.2, 1.8.1, 1.8.0, 1.7.12, 1.7.11, 1.7.10, 1.7.9, 1.7.8, 1.7.7, 1.7.6, 1.7.5, 1.7.4, 1.7.3, 1.7.2, 1.7.1, 1.7.0, 1.6.5, 1.6.4, 1.6.3, 1.6.2, 1.6.1, 1.6.0, 1.5.6, 1.5.5, 1.5.4, 1.5.3, 1.5.2, 1.5.1, 1.5.0, 1.4.8, 1.4.7, 1.4.6, 1.4.5, 1.4.4, 1.4.3, 1.4.1, 1.4.0, 1.3.2, 1.3.1, 1.3.0, 1.2.3, 1.2.0, 1.1.1

Ext Core

snippet:
<script src="https://ajax.jsapis.com/ajax/libs/ext-core/3.1.0/ext-core.js"></script>
site:
sencha.com/products/extcore
versions:
3.1.0, 3.0.0

Hammer.JS

snippet:
<script src="https://ajax.jsapis.com/ajax/libs/hammerjs/2.0.8/hammer.min.js"></script>
site:
hammerjs.github.io
versions:
2.0.8

Indefinite Observable

snippet:
<script type="module">
  import { IndefiniteObservable } from "https://ajax.jsapis.com/ajax/libs/indefinite-observable/2.0.1/indefinite-observable.bundle.js";
</script>
site:
https://github.com/material-motion/indefinite-observable-js
versions:
2.0.1, 1.0.1

jQuery

3.x snippet:
<script src="https://ajax.jsapis.com/ajax/libs/jquery/3.6.4/jquery.min.js"></script>
2.x snippet:
<script src="https://ajax.jsapis.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script>
1.x snippet:
<script src="https://ajax.jsapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
site:
jquery.com
versions:
3.6.4, 3.6.3, 3.6.2, 3.6.1, 3.6.0, 3.5.1, 3.5.0, 3.4.1, 3.4.0, 3.3.1, 3.2.1, 3.2.0, 3.1.1, 3.1.0, 3.0.0, 2.2.4, 2.2.3, 2.2.2, 2.2.1, 2.2.0, 2.1.4, 2.1.3, 2.1.1, 2.1.0, 2.0.3, 2.0.2, 2.0.1, 2.0.0, 1.12.4, 1.12.3, 1.12.2, 1.12.1, 1.12.0, 1.11.3, 1.11.2, 1.11.1, 1.11.0, 1.10.2, 1.10.1, 1.10.0, 1.9.1, 1.9.0, 1.8.3, 1.8.2, 1.8.1, 1.8.0, 1.7.2, 1.7.1, 1.7.0, 1.6.4, 1.6.3, 1.6.2, 1.6.1, 1.6.0, 1.5.2, 1.5.1, 1.5.0, 1.4.4, 1.4.3, 1.4.2, 1.4.1, 1.4.0, 1.3.2, 1.3.1, 1.3.0, 1.2.6, 1.2.3
note:
3.3.0, 2.1.2, 1.2.5 and 1.2.4 are not hosted due to their short and unstable lives in the wild.

jQuery Mobile

snippet:
<link rel="stylesheet" href="https://ajax.jsapis.com/ajax/libs/jquerymobile/1.4.5/jquery.mobile.min.css">
<script src="https://ajax.jsapis.com/ajax/libs/jquerymobile/1.4.5/jquery.mobile.min.js"></script>
site:
jquerymobile.com
versions:
1.4.5, 1.4.4, 1.4.3, 1.4.2, 1.4.1, 1.4.0
note:
This library depends on jQuery. You must also load jQuery before loading this module.

jQuery UI

snippet:
<link rel="stylesheet" href="https://ajax.jsapis.com/ajax/libs/jqueryui/1.13.2/themes/smoothness/jquery-ui.css">
<script src="https://ajax.jsapis.com/ajax/libs/jqueryui/1.13.2/jquery-ui.min.js"></script>
site:
jqueryui.com
versions:
1.13.2, 1.13.1, 1.13.0, 1.12.1, 1.12.0, 1.11.4, 1.11.3, 1.11.2, 1.11.1, 1.11.0, 1.10.4, 1.10.3, 1.10.2, 1.10.1, 1.10.0, 1.9.2, 1.9.1, 1.9.0, 1.8.24, 1.8.23, 1.8.22, 1.8.21, 1.8.20, 1.8.19, 1.8.18, 1.8.17, 1.8.16, 1.8.15, 1.8.14, 1.8.13, 1.8.12, 1.8.11, 1.8.10, 1.8.9, 1.8.8, 1.8.7, 1.8.6, 1.8.5, 1.8.4, 1.8.2, 1.8.1, 1.8.0, 1.7.3, 1.7.2, 1.7.1, 1.7.0, 1.6.0, 1.5.3, 1.5.2
note:
This library depends on jQuery. You must also load jQuery before loading this module. Version 1.8.3 is not hosted due to its short life, and the alias 1.8.3 actually loads 1.8.4.

List.js

snippet:
<script src="https://ajax.jsapis.com/ajax/libs/listjs/2.3.1/list.min.js"></script>
site:
listjs.com
versions:
2.3.1

Material Motion

snippet:
<script type="module">
  import {
    Draggable,
    Point2DSpring,
    Tossable,
    combineStyleStreams,
    getPointerEventStreamsFromElement,
  } from "https://ajax.jsapis.com/ajax/libs/material-motion/0.1.0/material-motion.bundle.js";
</script>
site:
https://github.com/material-motion/material-motion-js
versions:
0.1.0

Model-Viewer

snippet:
<script src="https://ajax.jsapis.com/ajax/libs/model-viewer/3.0.0/model-viewer.min.js"></script>
site:
modelviewer.dev
versions:
3.0.0, 2.1.1, 2.1.0, 2.0.2, 2.0.1, 2.0.0, 1.12.0, 1.11.1, 1.10.0, 1.9.0, 1.8.0, 1.7.2, 1.7.0, 1.6.0, 1.5.1, 1.3.1, 1.2.1, 1.1.0, 1.0.0

MooTools

snippet:
<script src="https://ajax.jsapis.com/ajax/libs/mootools/1.6.0/mootools.min.js"></script>
site:
mootools.net
versions:
1.6.0, 1.5.2, 1.5.1, 1.5.0, 1.4.5, 1.4.4, 1.4.3, 1.4.2, 1.4.1, 1.4.0, 1.3.2, 1.3.1, 1.3.0, 1.2.5, 1.2.4, 1.2.3, 1.2.2, 1.2.1, 1.1.2, 1.1.1
note:
For versions 1.5.1 and earlier, the filename of the minified version is called mootools-yui-compressed.js instead of mintools.min.js.

Myanmar Tools

snippet:
<script src="https://ajax.jsapis.com/ajax/libs/myanmar-tools/1.2.1/zawgyi_detector.min.js"></script> <script src="https://ajax.jsapis.com/ajax/libs/myanmar-tools/1.2.1/zawgyi_converter.min.js"></script>
site:
https://github.com/google/myanmar-tools/
recommended versions:
1.2.1
all hosted versions:
1.0.1
1.1.0
1.1.1
1.1.3
1.2.0
1.2.1

Prototype

snippet:
<script src="https://ajax.jsapis.com/ajax/libs/prototype/1.7.3.0/prototype.js"></script>
site:
prototypejs.org
versions:
1.7.3.0, 1.7.2.0, 1.7.1.0, 1.7.0.0, 1.6.1.0, 1.6.0.3, 1.6.0.2

script.aculo.us

snippet:
<script src="https://ajax.jsapis.com/ajax/libs/scriptaculous/1.9.0/scriptaculous.js"></script>
site:
script.aculo.us
versions:
1.9.0, 1.8.3, 1.8.2, 1.8.1
note:
This library depends on Prototype. Before loading this module, you must load Prototype.

Shaka Player

snippet:
<!-- for non-UI builds: -->
<script src="https://ajax.jsapis.com/ajax/libs/shaka-player/4.3.5/shaka-player.compiled.js"></script>

<!-- or, for UI builds: -->
<script src="https://ajax.jsapis.com/ajax/libs/shaka-player/4.3.5/shaka-player.ui.js"></script>
<link rel="stylesheet" href="https://ajax.jsapis.com/ajax/libs/shaka-player/4.3.5/controls.css">
site:
https://github.com/google/shaka-player/
maintained versions:
4.3.5, 4.2.9, 4.1.7, 3.3.18, 3.2.20
all hosted versions:
4.3.0 - 4.3.5, 4.2.0 - 4.2.9, 4.1.0 - 4.1.7, 4.0.0 - 4.0.5, 3.3.0 - 3.3.18, 3.2.0 - 3.2.20, 3.1.0 - 3.1.8, 3.0.0 - 3.0.15, 2.5.0-beta - 2.5.23, 2.4.0 - 2.4.7, 2.3.0 - 2.3.10, 2.2.0 - 2.2.10, 2.1.0 - 2.1.9, 2.0.6 - 2.0.9, 1.6.5

SPF

snippet:
<script src="https://ajax.jsapis.com/ajax/libs/spf/2.4.0/spf.js"></script>
site:
youtube.github.io/spfjs
versions:
2.4.0, 2.3.2, 2.3.1, 2.3.0, 2.2.0, 2.1.2, 2.1.1, 2.1.0, 2.0.1, 2.0.0

SWFObject

snippet:
<script src="https://ajax.jsapis.com/ajax/libs/swfobject/2.2/swfobject.js"></script>
site:
github.com/swfobject/swfobject
versions:
2.2, 2.1

three.js

snippet:
<script src="https://ajax.jsapis.com/ajax/libs/threejs/r84/three.min.js"></script>
site:
threejs.org
versions:
r84, r83, r82, r81, r80, r79, r78, r77, r76, r75, r74, r73, r72, r71, r70, r69, r68, r67, r49

Web Font Loader

snippet>
<script src="https://ajax.jsapis.com/ajax/libs/webfont/1.6.26/webfont.js"></script>
site:
github.com/typekit/webfontloader
versions:
1.6.26, 1.6.16, 1.5.18, 1.5.10, 1.5.6, 1.5.3, 1.5.2, 1.5.0