OCCT — Online Compiler Collection Tool

Run code in multiple programming and scripting languages using online compilers — no local setup needed. Compile or interpret, pass args, and download binaries automatically.

• Compile or interpret with a single command
• Auto OS and language detection for compiled output
• Works via npx, npm, pip, python -m, and cURL

Terminal-first developer experience. Zero local installs.

Zero Setup

Run online compilers directly from your terminal with npx or python -m. No local toolchains required.

Compile or Interpret

Choose -c for compiled outputs with auto OS detection or -i for interpreted languages.

Pass Arguments

Use --args to pass command-line arguments straight through to your program.

Download Binaries

Compiled artifacts download automatically so you can run them immediately.

Install & Use

Choose your preferred method: npx, npm, pip, python -m, or cURL.

# Direct usage (no install)
npx occt -h

# Interpret a script
npx occt -i ./test.py

# Compile a program (auto detect OS & language)
npx occt -c ./main.c -o main