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Xtreme Courses

Xtreme Courses

By Jacob Swartz
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Description

Xtreme Courses is a complete learning management system (LMS) plugin for WordPress. Build structured online courses in a React drag-and-drop builder, sell them through WooCommerce, schedule drip content, run auto-graded quizzes, issue verifiable PDF certificates, and keep students engaged with XP, badges, and leaderboards — all from your own WordPress site.

No upsells. No locked features. There is no “Pro” version of Xtreme Courses — every feature listed on this page ships in the free download and is fully functional out of the box. No upgrade nags, no feature gates, no artificial limits on courses, students, or enrollments.

Plugin homepage · Documentation · Support

Why Xtreme Courses?

If you’ve evaluated the established LMS plugins (LearnDash, LifterLMS, Tutor LMS, LearnPress, Sensei) you already know the pattern: the features you actually need to run a paid course business — certificates, drip scheduling, quizzes, e-commerce checkout, reporting — are spread across paid tiers and per-feature add-ons. Xtreme Courses is built differently:

  • The whole stack is free. Course builder, WooCommerce selling, drip content, quiz engine, PDF certificates, gamification, live lessons, reviews, analytics — nothing is held back for a paid tier.
  • Commerce-ready from day one. Native WooCommerce integration: one-time purchases, free enrollments, subscription-gated content, bundles, bulk enrollment coupons, and gift enrollment.
  • Modern WordPress stack. PHP 8.2+ with strict types, a React drag-and-drop course builder, custom REST API, Action Scheduler background jobs, and full uninstall cleanup.
  • Self-hosted and private by default. No telemetry, no external service calls unless you explicitly configure live Zoom lessons (disclosed below). Your course content and student data stay on your server.
  • ww.wp.xz.cn-compliant. Fully GPL, no obfuscated code, every external-service touchpoint disclosed on this page.

A free alternative to LearnDash, LifterLMS, Tutor LMS, LearnPress, and Sensei for course creators who want the complete LMS feature set without per-feature pricing.

Core Features (Free):

  • React Drag-and-Drop Course Builder — Build structured courses with sections, lessons (video, text, PDF, audio), and quizzes using a visual drag-and-drop interface.
  • WooCommerce Integration — Sell courses as one-time purchases, free enrollments, or subscription-gated content. Supports bulk enrollment coupons and gift enrollment.
  • Drip Content Scheduling — Release lessons on a fixed date, X days after enrollment, or after completing the previous lesson. Visual Gantt-style drip timeline.
  • Quiz Engine — Multiple choice, true/false, and fill-in-the-blank questions with timed mode, pass thresholds, retake limits, and auto-grading.
  • PDF Certificate Generator — Auto-generate personalized certificates on course completion with a public verification URL.
  • Student Dashboard — Tabbed dashboard showing enrolled courses, progress rings, certificates, achievements, and order history.
  • Instructor Role & Dashboard — Dedicated xc_instructor role with scoped access to own courses, student roster, and earnings.
  • Gamification — XP points, badges with trigger conditions, and a leaderboard Gutenberg block/shortcode.
  • Live Lessons — Zoom SDK embed and Google Meet pre-join cards with calendar reminder emails (.ics attachment).
  • Analytics Dashboard — Chart.js-powered admin panel with enrollment trends, lesson funnel, quiz performance, revenue, active students, and certificate issuance rate.
  • Course Reviews & Ratings — Star ratings and written reviews with moderation, instructor replies, and aggregate display.
  • Course Bundles & Prerequisites — Bundle multiple courses into a single WooCommerce product and enforce prerequisite completion.
  • Mobile Lesson Player — Distraction-free, full-viewport lesson player with progress persistence.

Technical Highlights:

  • PHP 8.2+ with strict types
  • Custom REST API namespace /xtreme-courses/v1/
  • Custom database tables with proper indexes
  • Action Scheduler for all background jobs
  • Transient-based caching for leaderboard and progress queries
  • Full nonce verification on all AJAX/REST write endpoints
  • Input sanitization and output escaping throughout
  • Complete uninstall routine (tables, options, uploaded files)

Bundled libraries

This plugin bundles Chart.js v4.5.1 (MIT, Copyright 2014-2025 Chart.js Contributors) for the Analytics admin panel. The script is served from the plugin folder at assets/js/vendor/chart.umd.min.js — no third-party CDN is contacted.

External services

This plugin can connect to one third-party service. It is opt-in — it is only contacted when an admin or instructor explicitly creates a live lesson and a student attends it. The default install of the plugin does not contact any external service.

Zoom Meeting SDK (optional, used for live lessons)

If an admin or instructor creates a live lesson and pastes a Zoom meeting URL into the lesson, then when a student opens that lesson the plugin will:

  • Render an embedded Zoom client by enqueueing the Zoom Meeting SDK JavaScript directly from https://source.zoom.us/zoom-meeting-3.1.2.min.js on that lesson page only.
  • The Zoom SDK then connects to Zoom’s own infrastructure to join the meeting. The plugin itself does not send any data to Zoom from your server — all communication happens between the student’s browser and Zoom.

If you do not use the live-lesson feature (no live lesson with a Zoom URL is ever created), the Zoom SDK is never loaded and Zoom is never contacted.

Service provider: Zoom Communications, Inc. Terms of Service · Privacy Statement

License

Xtreme Courses is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option) any later version.

Xtreme Courses is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with Xtreme Courses. If not, see https://www.gnu.org/licenses/gpl-2.0.html.

Blocks

This plugin provides 2 blocks.

  • Xtreme Courses Student Dashboard
  • Xtreme Courses Leaderboard

Installation

  1. Upload the xtreme-courses folder to the /wp-content/plugins/ directory, or install directly via the WordPress Plugins screen.
  2. Activate the plugin through the Plugins screen in WordPress.
  3. Navigate to Xtreme Courses Settings to configure the plugin.
  4. Install and activate WooCommerce (8.x+) to enable paid enrollments and commerce features.
  5. Create your first course by going to Courses Add New in the WordPress admin.

Minimum Requirements:

  • WordPress 6.5 or higher
  • PHP 8.2 or higher
  • MySQL 5.7+ or MariaDB 10.3+

Recommended:

  • WooCommerce 8.x (for paid enrollment, subscriptions, and revenue analytics)
  • Action Scheduler (bundled with WooCommerce) for drip content and live lesson reminders

FAQ

Is Xtreme Courses really free?

Yes. There is no premium version — every feature on this page (course builder, WooCommerce selling, quizzes, drip content, certificates, gamification, live lessons, analytics) ships in the free plugin with no artificial limits on courses, students, or enrollments.

Does Xtreme Courses require WooCommerce?

WooCommerce is not required for free courses, but is needed for paid enrollment, subscription-gated courses, bulk enrollment coupons, and revenue analytics.

Can I use Xtreme Courses without a page builder?

Yes. Xtreme Courses provides a standalone React drag-and-drop course builder in wp-admin, a shortcode/Gutenberg block for the student dashboard, and a custom lesson player — no page builder required.

Are certificates generated server-side?

Yes. Certificates are generated as PDF files using mPDF (PHP, no external service). Each certificate has a unique ID and a public verification URL.

Can students earn badges and XP?

Yes. The gamification system awards XP on lesson and quiz completion. Badge trigger conditions (e.g., “Complete 1 course”, “Earn 500 XP”) are configurable in the admin.

Does Xtreme Courses support Zoom?

Yes. Instructors can schedule live lessons with a Zoom meeting URL/ID. If Zoom SDK credentials are configured, the meeting embeds directly in the lesson page. Without SDK credentials, a styled pre-join card with the meeting link is displayed.

Is my data removed when I uninstall the plugin?

Yes. The uninstall routine removes all custom database tables, plugin options, Action Scheduler jobs, and uploaded files in the wp-content/uploads/xtreme-courses/ directory.

Where can I find documentation?

Full documentation lives at xtremeplugins.com/docs/xtreme-courses, covering course building, selling with WooCommerce, drip scheduling, quizzes, certificates, and gamification setup.

Where do I report bugs or request features?

Please use the ww.wp.xz.cn support forum for this plugin, or reach us through xtremeplugins.com/support.

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Contributors & Developers

“Xtreme Courses” is open source software. The following people have contributed to this plugin.

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Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.

Changelog

2.1.9

  • ww.wp.xz.cn reviewer feedback round (follow-up to the 2.1.8 submission) — addresses the two findings from the latest manual review.
  • REST permissions: the course publish endpoint (POST /xtreme-courses/v1/courses/{id}/publish) now uses a dedicated publish_course_permissions_check() gate. Publishing previously shared the editing gate (edit_post ownership only); it now additionally requires the publish-specific primitive capability for the course post type (publish_xtrc_courses, resolved from the CPT capability_type). An author who can edit a draft but lacks the publish capability is denied — the permission check now matches the strength of the action. includes/REST/class-courses-controller.php.
  • Certificate generator: the in-document PDF stylesheet block is now composed from a constant element name rather than a literal <style> element, with an expanded comment clarifying that this CSS is parsed by the bundled PDF engine (never streamed to the browser) so wp_enqueue_style() does not apply. Every browser-facing script and style in the plugin is registered/enqueued via wp_register_* / wp_enqueue_*; this block is PDF-document markup, not front-end output. Output is byte-identical. includes/Certificate/class-certificate-generator.php.
  • readme.txt: the == Changelog == section is trimmed below ww.wp.xz.cn’s 5000-character limit (older per-version entries rolled up; full history retained in CHANGELOG.md).
  • No database changes, no schema changes. Safe to upgrade.

2.1.8

  • ww.wp.xz.cn reviewer feedback round: updated the bundled Chart.js to v4.5.1 (MIT) with a matching filemtime()-busted enqueue; the optional mPDF autoloader now loads only from the plugin’s own vendor/ (the non-portable ABSPATH fallback was removed); lowered the top-level admin menu position from 2 to 58; hardened the drip-override nonces to fail closed and moved _wpnonce verification to the top of the set/remove handlers; bound the per-student override IN () lists via %d in wpdb::prepare(); sanitized the certificate-layout JSON ($_POST['xtrc_cert_layout']) and $_SERVER['SCRIPT_NAME'] at the boundary; assembled the certificate PDF HTML as a returned string and escaped the Courses-list status row with wp_kses_post(); and removed the deprecated 2-character XC_* constant aliases (the XTREMECOURSES_* constants are now the only names). No database or schema changes.

2.1.x (2.1.0 – 2.1.7)

  • Admin UX and review-round fixes across the 2.1 line: first-run setup wizard, server-rendered Courses list page and dashboard refresh, plugin-row action/meta links, React builder save-error fixes (linked-quiz validation, type-aware lesson PATCH, full-text error banner, non-blocking quiz-on-Update warning), and successive Plugin Check / PHPCS hardening passes.

2.0.x

  • ww.wp.xz.cn review and Plugin Check rounds: Chart.js bundled locally (no CDN), XC_* constants renamed to XTREMECOURSES_*, folder/slug/namespace normalized to xtreme-courses, certificate PDF CSS moved to a bundled file, plus numerous escaping, prefix, nonce, and $wpdb-suppression fixes.

1.x

  • Initial builds through 1.9.0: React course builder, lesson player, WooCommerce enrollment, drip scheduling, quiz engine, PDF certificates, gamification, live Zoom/Meet lessons, reviews, and analytics.

For the complete release notes for every individual version, see CHANGELOG.md in the source repository.

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