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changelog

What's new at Dometrain

New features, improvements, and content, shipped every week.

July 2026

Dometrain, meet your AI assistant

Our biggest week yet: bring Dometrain into your AI assistant, practice in 11 more languages, claim your public profile, and follow it all right here on the new changelog.

New

Bring Dometrain into your AI assistant

The Dometrain MCP integration is live. Connect your AI assistant or coding agent to Dometrain and it can search every lesson, read course code and transcripts, and explore the catalog for you, right from your editor. Set it up in minutes from your dashboard.

Check it out
New

Practice in 11 more languages

Hands-on exercises now run in 11 more languages, right in your browser with zero setup: Ruby, PHP, C, C++, Lua, Clojure, Perl, F#, OCaml, Zig, and R.

New

Your public learner profile

Every learner now has a public profile page. Show off your achievements, progress, and completed courses, and share it anywhere with a single link.

New

Learn the command line in your browser

New terminal-based lessons drop you into a safe, simulated terminal. Type real commands, work toward guided checkpoints, and build command-line confidence without touching your own machine.

New

Review code like a senior engineer

A new review lesson type puts you in the reviewer's chair: read a real set of code changes, leave line-by-line comments, and submit your review, just like on the job.

Improved

Course pages, redesigned

Course pages got a full redesign: clearer pricing, easier access to previews, and a smoother experience on mobile.

Improved

Your progress stays with you

If your subscription has expired, you can still see your course progress across the site, so you know exactly where to pick things back up.

New

The Dometrain changelog is live

Every week we will post what is new on Dometrain right here: new features, improvements, and fresh content. Check back any time to see what your learning platform can do for you now.

Find your next course, meet Dometrain Lite

A big week for choosing what to learn: a smarter way to discover courses, a new plan to get started with, and a fresh coat of paint across the site.

New

Dometrain Lite is here

A new, more affordable subscription tier that includes a curated set of courses. The plans page now compares exactly what each plan includes, so you can pick the one that fits how you learn.

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New

AI-powered course discovery

Not sure what to learn next? Tell the new search on the homepage or the course catalog what you want to achieve, and it will find, compare, and recommend the right courses for you.

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Improved

The AI assistant joins your system design exercises

Ask for help in a system design exercise and the AI assistant now works directly on your diagram: it can draw, connect, and explain architecture on the canvas with you.

Improved

A fresh look across the site

The homepage got a full redesign, and the course catalog, author, and workshop pages were refreshed to make browsing faster and clearer.

Improved

Mock interviews on any device

Mock interviews now look and work great on phones, tablets, and ultrawide monitors, so you can practice wherever you are.

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Improved

Spot downloadable resources at a glance

Lessons that include downloadable files are now marked in the course curriculum, so you can find resources without opening every lesson.

June 2026

Wishlists and team assignments

Two new ways to plan your learning: save courses for later, and see everything your team wants you to complete in one place.

New

Save courses to your wishlist

Found a course you want but are not ready to start? Add it to your new wishlist and come back any time. You can also opt in to alerts so you never miss a discount on a wishlisted course.

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New

See what your team assigned you

If your team assigns you courses or learning paths, they now show up in one dashboard view with due dates, progress for every course, and a clear next step.

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AI mock interviews are here

Practice the hardest part of getting a job: the interview itself. Plus a smarter video player and new achievements to chase.

New

Practice real interviews with an AI interviewer

Mock interviews are live. Talk through a realistic interview for your target role with an AI interviewer that adapts to your answers, then get a detailed report on how you did and where to improve.

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New

Live coding rounds in mock interviews

Interviews can now include a live coding round: solve a real problem in the built-in editor while the interviewer follows along and reacts, just like the real thing.

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Improved

The player remembers your settings

Captions and playback speed now stick across lessons and sessions, so you set them once and get back to learning.

Improved

New achievements, easier to browse

There are new achievements to earn, and the achievements page now has category tabs so you can see what you have unlocked and what is next.

Improved

Quiz retries keep your answers

Retrying a quiz no longer clears everything you entered, so you can focus on fixing just the answers you got wrong.

May 2026

System design goes hands-on

You can now design real architectures, not just watch someone else do it.

New

Interactive system design exercises

Hands-on lessons now include an interactive diagram canvas. Drag in real infrastructure building blocks, connect them into an architecture, and get instant feedback on your design. A built-in tutorial walks you through your first diagram.

Improved

Give your code the full screen

You can now minimize the test panel in hands-on coding exercises, so your editor gets all the room it needs while you work.

April 2026

Lock down your applications

A brand new course on one of the most requested topics.

Content

New course: Getting Started: Authentication and Authorization in .NET

Learn how to add authentication and authorization to your .NET applications with modern patterns and best practices.

Check it out
March 2026

Unlimited practice, generated for you

Never run out of things to practice, and get a better look at our workshops while you are at it.

New

Generate your own coding challenges with AI

Want more practice? Generate unlimited coding challenges with AI in C#, Python, TypeScript, and JavaScript, then solve them in your browser with instant test feedback.

Improved

Every workshop gets its own page

Each workshop now has a dedicated page with the full details, so you can see exactly what you will learn before you sign up.

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Java joins the browser

More languages, and a new home for training with us in person.

New

Practice Java right in your browser

Java exercises now compile and run entirely in your browser. Write real Java, run it, and get instant test feedback without installing a thing.

New

A new home for workshops

Browse all Dometrain workshops in one place and find your next chance to train with us, in person or online.

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February 2026

Get ahead on MCP

Content

New course: Getting Started: Model Context Protocol (MCP)

Learn what MCP is and how to integrate it into your applications, one of the most in-demand skills in AI development right now.

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Two new hands-on courses, more languages

The hands-on experience keeps growing: new interactive courses and new languages you can run without leaving your browser.

Content

Hands-On: Learn TypeScript and Hands-On: Learn JavaScript

Two new interactive courses where you learn by writing real code in your browser, with instant feedback on every exercise.

Check it out
New

Python and Go run in your browser

In-browser exercises now support Python and Go, joining C#, SQL, TypeScript, and JavaScript. No installs, no setup, instant feedback.

Sharpen your algorithms

Content

New course: Hands-On: Data Structures & Algorithms in C#

Master data structures and algorithms by solving interactive coding exercises in C#, right in your browser with instant feedback as you go.

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January 2026

Quizzes, and lessons that talk

New ways to check your understanding and new ways to take it all in.

New

Quizzes inside your courses

Courses can now include quiz lessons. Check your understanding as you go and see instantly which answers you got right.

New

Exercise instructions, read aloud

Hands-on exercises can now read their instructions out loud to you, with adjustable speed, so you can listen while you code.

Improved

One-click sign-in

You can now sign up and sign in with one click using your existing accounts. No new password to remember.

Learn by doing: hands-on courses are here

The biggest change to how you learn on Dometrain yet: courses where you write real code in your browser, plus XP, achievements, and a leaderboard to keep you going.

New

Write real code, right in your browser

Solve interactive coding exercises with instant test feedback and no setup at all, starting with the free Hands-On: C# for Beginners.

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Content

Hands-On: Learn PostgreSQL

Learn PostgreSQL by writing and running real queries in your browser, with interactive challenges designed for every level.

Check it out
New

Earn XP and level up

Completing lessons and exercises now earns you XP. Level up, build a daily streak, and follow it all on your new progression page.

New

Unlock achievements

Achievements are live. Collect them as you learn, from your first completed lesson to feats only the most dedicated will reach.

New

The leaderboard is live

See how you stack up against other learners, climb the ranks, and compete with the Dometrain community.

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Read it your way

Whether it is articles or lessons, the words are now right where you need them.

New

The blog moves in

Our articles now live right here on Dometrain with a fresh reading experience, and there is a feed you can subscribe to so you never miss a post.

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New

Lesson transcripts

Video lessons now include a full transcript, so you can read along, skim back, and find exactly where something was said.

What's New