The X protocol C-language Binding (XCB) is a replacement for Xlib featuring a small footprint, latency hiding, direct access to the protocol, improved threading support, and extensibility.
May 2022: xcb-proto 1.15 and libxcb 1.15 were released. In addition to fixing bugs, this adds support for XInput 2.4.
February 2020: xcb-proto 1.14 and libxcb 1.14 were released. In addition to fixing bugs, this brings compatibility with check > = 0.13 and adds xcb_total_read() and xcb_total_written() APIs.