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Built for Concurrency & Fault Tolerance
- Experience Elixir's lightweight process model running on the proven Erlang VM using this elixir online editor
- Test pattern matching and message passing—core concepts for building distributed systems
- Understand why companies like Discord and Pinterest chose Elixir for high-concurrency applications
- Practice "let it crash" philosophy with supervisor patterns for resilient systems
Web Development with Phoenix
- Learn the language powering Phoenix Framework—a high-performance web framework in this elixir compiler
- Master pipe operators |> for clean request/response transformations in web apps
- Test functional patterns used in Phoenix LiveView for real-time interfaces
- Perfect for developers building scalable web applications with WebSocket support
Functional Programming on BEAM
- Write immutable, functional code that compiles to efficient Erlang VM bytecode
- Practice recursion, higher-order functions, and pattern matching in Elixir's clean syntax
- Metaprogramming with Macros - Explore Elixir's compile-time code generation capabilities
- Ideal for functional programming enthusiasts who want Erlang VM power with modern syntax
No Erlang/OTP Installation Needed
- Run Elixir code instantly without installing Erlang/OTP, Elixir, or Mix in this elixir playground
- Share Elixir patterns for concurrent programming, web development, or GenServer examples
- Great for learning Elixir before building production Phoenix or Nerves applications
- Test Enum module, Stream lazy processing, and functional data transformations immediately
Elixir Keyboard Shortcuts
Experience the power of Replit AI

This entire Elixir compiler was built by Replit Agent 3 from a natural language prompt. Replit's environment facilitates rapid development, iteration and testing code for users of any technical ability. Develop software faster and better with Replit’s autonomous AI.
Get started freeFrequently Asked Questions
What Elixir version does this compiler support?
This online elixir compiler runs a recent stable Elixir version on the Erlang VM. You can use modern Elixir features including pipe operators, pattern matching, Enum/Stream modules, and basic metaprogramming. Perfect for learning Elixir before building Phoenix apps.
Can I use Phoenix Framework in this online editor?
Phoenix framework isn't available in this elixir playground, but you can practice all the Elixir language features Phoenix uses: pattern matching, pipe operators, functional programming, and Enum operations. Focus on mastering Elixir syntax before diving into Phoenix development.
Is Elixir good for web development?
Absolutely! Elixir powers Phoenix Framework, which handles millions of concurrent connections with low latency. This elixir online editor lets you learn the language features that make Phoenix so powerful: pattern matching, immutability, and functional composition. Great preparation for building real-time web apps.
How does Elixir handle concurrency?
Elixir runs on the Erlang VM, which uses lightweight processes (not OS threads) for concurrency. While you can't spawn processes in this elixir compiler, you can practice pattern matching and functional patterns that make concurrent Elixir code maintainable. The BEAM VM handles millions of concurrent processes efficiently.
Can I save Elixir code permanently?
Yes! Click Share to generate a permanent URL for your Elixir code. Perfect for sharing functional programming examples, Phoenix patterns, or solutions to coding challenges. Your Elixir snippet stays accessible as long as you have the link.
What Elixir features work in this compiler?
Core Elixir language features work great: pattern matching, pipe operators, Enum/Stream modules, recursion, higher-order functions, and basic metaprogramming. External libraries and OTP behaviors aren't available, but you have everything to learn fundamental Elixir concepts in this elixir code runner.
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