In a nutshell

TeaScript can be used

• to extend C++ applications with TeaScript dynamically at runtime via the TeaScript C++ Library — once your application has customization points for TeaScript, every installation can be extended or modified without the expensive re-compile-and-redeploy cycle.
• for arbitrary tasks by executing standalone TeaScript files via the TeaScript Host Application.

Architectural overview — a C++ application invokes TeaScript at customization points via the TeaScript C++ Library.

A TeaScript "Hello World" is just one line:

println( "Hello World from TeaScript!" )

…and the smallest possible C++ embedding is about six:

#include "teascript/Engine.hpp"

int main()
{
    teascript::Engine engine;
    std::cout << engine.ExecuteCode( "2 + 3 * 2" ).GetAsInteger() << std::endl;
    return EXIT_SUCCESS;
}

More — bidirectional interop, in-string evaluation, lambdas / higher-order functions, named tuples, generic dispatch and much more — on the Overview & Highlights page.

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Going deeper

• Comparison of C++ scripting libraries — how TeaScript stacks up against ChaiScript, Lua, Python, JavaScript, AngelScript, Wren and Squirrel for embedding in C++.
• TeaScript vs ChaiScript — Fibonacci benchmark — measured against the closest competitor on recursive Fibonacci(25); a second benchmark filling an image buffer is in the 0.13 release post.
• TeaScript on GitHub — source for the TeaScript C++ Library, issue tracker, demo programs and example .tea scripts.