Free Online Code Runner

Write and execute code in 40+ languages instantly. Powered by the open-source Piston engine. No setup needed.

Code

stdin:

print("Hello from TechVyapy!")

Output

Run your code to see output here…

Frequently Asked Questions

Which programming languages are supported?

TechVyapy Code Runner supports 40+ languages including Python, JavaScript, TypeScript, Java, C, C++, Go, Rust, PHP, Ruby, Swift, Kotlin, Bash, Lua, Haskell, Scala, R and many more. The list is loaded live from the Piston open-source engine.

Is the online code runner free to use?

Yes, completely free. No account, no subscription, no API key needed. Just write your code and click Run.

Can I provide stdin input to my program?

Yes. There is a dedicated stdin field where you can paste input that your program will read from standard input.

Is there a keyboard shortcut to run code?

Yes — press Ctrl + Enter (or Cmd + Enter on Mac) to run your code without clicking the Run button.