SFML
A cross-platform multimedia library providing window, 2D graphics, audio, networking, and system modules.
Why use it
Its clear API fits learning, jams, tools, and small 2D games that do not need a full engine.
Where it fits
Find engines, frameworks, code libraries, version control, and production automation.
What to check
Scenes, physics, asset packaging, and editors are out of scope; larger projects need their own architecture.