Get the list of extensions in Magento

getExtensions.php

<?php
// add the vendors added in the require segment in the composer.json
$vendors = [
    'amasty',
    'allure-framework',
    'aitoc',
    'ecommerce121',
    'mageplaza',
    'sinergi'
];
$baseDir = './';

if (isset($argv[1])) {
    // full path
    $baseDir = "{$argv[1]}/";
}

$vendorDir = "{$baseDir}vendor/";

if (!is_dir($vendorDir)) {
    echo "Invalid Directory\n"  ;
}

$composerJson = file_get_contents($baseDir . "composer.json");
$composerJson = json_decode($composerJson, true);
$extensionsRequired = $composerJson['require'];

$totalExtensions = 0;

foreach ($vendors as $vendor) {
    echo "\n$vendor\n";
    $dir = $vendorDir . $vendor . "/";
    if (!is_dir($dir)) {
        echo "Folder not found $vendor\n";
        continue;
    }

    $items = scandir($dir);
    for ($i=2; $i<count($items); $i++) {
        $extensionDir = $dir . $items[$i];
        if (!is_dir($extensionDir) || !file_exists("{$extensionDir}/composer.json")) {
            echo "\ncomposer.json not found in $vendor.\n";
            continue;
        }
        $json = file_get_contents("{$extensionDir}/composer.json");
        $jsonData = json_decode($json, true);

        if (!array_key_exists($jsonData['name'], $extensionsRequired)) {
            continue;
        }

        $version = isset($jsonData['version']) ? $jsonData['version'] : 'No Version';

        if (isset($jsonData['description'])) {
            echo "- {$jsonData['name']} ($version) {$jsonData['description']} \n";
        } else {
            echo "- {$jsonData['name']} ($version)\n";
        }
        $totalExtensions++;
    }
    
}


// app/code

$codeDir = "{$baseDir}app/code/";
$codeVendors = scandir($codeDir);

for ($i=2; $i<count($codeVendors); $i++) {
    $vendorFolder = $codeDir . $codeVendors[$i];
    if (!is_dir($vendorFolder)) {
        echo "\nFolder $vendor not found.\n";
        continue;
    }
    echo "\n" . $codeVendors[$i] . "\n";
    $codeExtensions = scandir($vendorFolder . "/");
    
    for ($k=2; $k<count($codeExtensions); $k++) {
        $extensionDir = $vendorFolder . "/" . $codeExtensions[$k];
        if (!is_dir($extensionDir)) {
            continue;
        }
        
        if (!file_exists("{$extensionDir}/composer.json")) {
            echo "- $codeExtensions[$k].\n";
        }

        $json = file_get_contents("{$extensionDir}/composer.json");
        $jsonData = json_decode($json, true);
        
        $version = isset($jsonData['version']) ? $jsonData['version'] : 'No Version';

        if (isset($jsonData['description'])) {
            echo "- {$jsonData['name']} ($version) {$jsonData['description']} \n";
        } else {
            echo "- {$jsonData['name']} ($version)\n";
        }
        $totalExtensions++;
    }

}

echo "\n\n Total: {$totalExtensions} \n";

Put the script in the same level of the magento code and execute with :
php getExtensions [./|<path_to_project>]