Free Online Code Converters for 61 Programming Languages & Frameworks

Here is the code to create a dropdown menu with the provided list of programming languages:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Programming Languages</title>
    <style>
        .language-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .language-list li {
            display: inline-block;
            margin-right: 10px;
        }

        .language-list a {
            text-decoration: none;
            color: blue;
        }
    </style>
</head>
<body>

    <h1>Programming Languages:</h1>
    <ul class="language-list">
        <li><a href="#">Assembly</a></li>
        <li><a href="#">C</a></li>
        <li><a href="#">C++</a></li>
        <li><a href="#">Clojure</a></li>
        <li><a href="#">Elixir</a></li>
        <li><a href="#">F#</a></li>
        <li><a href="#">Groovy</a></li>
        <li><a href="#">Haskell</a></li>
        <li><a href="#">HTML/CSS</a></li>
        <li><a href="#">Java</a></li>
        <li><a href="#">JavaScript</a></li>
        <li><a href="#">Julia</a></li>
        <li><a href="#">Lua</a></li>
        <li><a href="#">MATLAB</a></li>
        <li><a href="#">PHP</a></li>
        <li><a href="#">Perl</a></li>
    </ul>

</body>
</html>

This HTML code creates a dropdown menu with the provided list of programming languages. Each language is represented as a link, and when clicked, it opens in a new tab or stays on the current page.

Note that for the purpose of this example, each language's webpage has not been created yet. The links are just placeholders for future use.