but only server plug-ins can be installed. There are three types of plug-ins: <adata-rel="popup"data-position-to="origin"href="#freePlugins">Free</a>,
<adata-rel="popup"data-position-to="origin"href="#supporterPlugins">Supporter-Only</a>, and <adata-rel="popup"data-position-to="origin"href="#premiumPlugins">Premium</a>.</strong></p>
<p>Supporter-Only plug-ins are free for anyone who is an <strong>MB3 Supporter</strong> (with a valid MB3 key who has donated the minimum amount to the overall project).</p>
<p>Anyone can install them and enjoy a free trial period of 14 days in most instances. The trial period may commence as soon as you install the plug-in.<p>
<p>These plug-ins will appear in the catalog with a "Supporter" banner.</p>
<p>Premium plug-ins are developed by third-parties and require that you be an <strong>MB3 Supporter <em>and</em> also register the plug-in with its creator.</strong>
The cost of registering these plug-ins is set for each one by its creator and all revenues go to that person.</p>
<p>Anyone can install them and enjoy a free trial period of 14 days in most instances. The trial period may commence as soon as you install the plug-in.</p>
<p>You should install premium plug-ins without registering them first to take advantage of this trial period. Then, if you find the functionality useful,
you can register it via its detail page here in the catalog.
</p>
<p>These plug-ins will appear in the catalog with a "Premium" banner.</p>