Dmitry Mayorov

With this plugin you can safely change your theme without worrying to loose the code you’ve added.

Insert Code Lite

Insert Code Lite lets you add scripts, styles, and other custom code to your website.

leadbi

LeadBI’s WordPress plugin allows existing LeadBI customers and trial users to install the LeadBI tracking code on their existing WordPress blogs and websites.
If you don’t have an account yet, <a href="https://app.leadbi.com/signup.html" rel="nofollow ugc">sign up for a free 15 day trial.</a>
LeadBI collects usage information about this plugin so that we can better serve our customers and know what features to add. By installing and activating the LeadBI for WordPress plugin you agree to these terms.

LeadBI Plugin for WordPress

LeadBI's WordPress plugin allows existing LeadBI customers and trial users to install the LeadBI tracking code on their existing WordPress blogs  …

Insert Code Lite vs LeadBI Plugin for WordPress