Zerethon

Technology

Technology that becomes useful software.

Zerethon builds useful software for developers, schools and everyday work. Six products are live today — each one free, each one built around a job people actually need done.

The ecosystem at a glance

Each product is independent and works on its own. They share one Zerethon account, so you sign in once and use any of them.

What we build

Software intelligence

Flow

Understand how software actually behaves.

Flow records what happens inside each request to a Laravel application and names the step that made it slow — so teams fix the real bottleneck instead of guessing. It also scans websites for SEO, security-header, structured-data and AI-discoverability problems.

Who it's for: Developers and tech leads working on applications they need to understand, speed up or audit.

Explore Flow Open flow.zerethon.com

Things you can do today

  • See where a slow request spends its time
  • Scan a website and get findings with evidence
  • Compare two scans to see what changed

Practical utilities

Zerethon Tools

Practical tools for everyday digital work.

180 free utilities — formatters, converters, encoders, hash and UUID generators, calculators and algorithm visualisers. Most run entirely in your browser, so what you paste stays on your device. No account needed.

Who it's for: Developers, creators, students — anyone with a quick task that shouldn't need an install or a sign-up.

Explore Zerethon Tools Open tools.zerethon.com

Things you can do today

  • Format and validate JSON
  • Encode a URL or decode Base64
  • Watch a sorting algorithm step by step

Learning to code

Zerethon IDE

Write and run code without installing anything.

An online code editor for 14 languages, from Python, JavaScript and Java to C++, Go, Rust and SQL. Each run happens in an isolated sandbox. Runnable algorithm samples and language reference pages sit next to the editor, and Zerethon Skills explains how software gets from working code to production.

Who it's for: Students learning to program and developers who want to try a snippet without setting up a toolchain.

Explore Zerethon IDE Open ide.zerethon.com

Things you can do today

  • Run a sorting algorithm in several languages
  • Share a read-only link to your code
  • Follow a Skills path from version control to deployment

Education

Smart Edu

Software for teaching and learning.

Schools and teachers build lessons and question banks, import questions from Word or Excel, and run online exams that are graded automatically. Students study lessons step by step and see their results.

Who it's for: Schools, teachers working with or without a school, and their students.

Explore Smart Edu Open edu.zerethon.com

Things you can do today

  • Turn a Word file of questions into a question bank
  • Run a timed online exam
  • Share a lesson students read step by step

Interactive experiences

Zerethon Games

Small interactive experiences for learning and play.

27 browser games — puzzles like Sudoku and Nonogram, arcade classics, learning games such as Math Drill and Geography Quiz, and real-time two-player matches including chess.

Who it's for: Anyone who wants a short break, and learners who like practice that feels like a game.

Explore Zerethon Games Open game.zerethon.com

Things you can do today

  • Solve the daily challenge
  • Play chess or Connect Four against a friend online
  • Practise mental maths with Math Drill

Community and identity

Zerethon Social

A focused social space for the people you know.

Share updates with friends, groups and pages, and talk in real-time chat — in a feed built around the people and communities you chose, not around keeping you scrolling.

Who it's for: People who want to stay in touch with friends and small communities.

Explore Zerethon Social Open social.zerethon.com

Things you can do today

  • Post an update to your friends
  • Join a group around an interest
  • Chat in real time

Why these products are useful

Free to use

Every product is free. Tools and single-player games don't even need an account.

Your data stays where it belongs

Most tools work entirely in your browser, and each product keeps its own data — only your account is shared.

Answers with evidence

Flow shows the measurement behind each finding; Smart Edu shows students what they got right and wrong, under the teacher's rules.

Clear about limits

Every product page lists what the product can't do yet, so you know what to expect before you start.

Built with modern web technology

Zerethon uses established web technologies and open standards to build products that load fast, work in any modern browser, stay accessible, and evolve independently of one another. Nothing to install — every product runs on the web.

What we are building next

We are deepening the products that exist rather than adding many new ones.

Deeper software intelligence

Flow checks that run automatically on pull requests, and alerts when a scan finds something critical.

Better learning experiences

Richer lessons, smarter use of question banks, and clearer progress for students and teachers.

More useful tools

New utilities alongside explanations and guides that show when and how to use them.

More connected products

Moving between Zerethon products with one account, as smoothly as possible.

Explore Zerethon

Pick the product that fits what you need today, or read how we approach the problems behind them.

All products Knowledge articles