ETLCPP/etl

Health v2 · maintenance only

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3107 stars · 540 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

The Embedded Template Library (ETL) is a C++ library providing STL-like containers, algorithms, and utilities designed for embedded systems with deterministic memory usage and no dynamic allocation. It supports C++98 through C++26 and works even on compilers without full STL support.

Use cases

• use STL-style containers in embedded C++ firmware without heap allocation
• replace std::vector and std::map with fixed-capacity equivalents for deterministic memory
• write portable C++ that compiles on compilers lacking full STL support
• build lock-free queues and pools for interrupt-driven embedded code
• use chrono, variant, and span features on older C++ toolchains
• develop Arduino or RTOS applications with type-safe containers

When to choose

• you develop embedded or real-time C++ software where dynamic allocation is forbidden or undesirable
• you need STL-like APIs with fixed-size, deterministic containers
• you target compilers with incomplete or no C++ standard library support

When to avoid

• you write general-purpose desktop or server C++ where the standard library is fully available
• you need dynamically growing containers with unlimited capacity
• your project is C, not C++

Facets

library · maturity active

concurrency developer-tools math date-time serialization embedded-systems developer-tools cpp embedded cross-platform stl-alternative containers no-heap deterministic templates c-plus-plus fixed-capacity rtos algorithms

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