
Also known as OpenboxWM
Openbox is a free, stacking window manager for the X Window System, licensed under the GNU General Public License. Originally derived from Blackbox 0.65.0 (a C++ project), Openbox has been completely re-written in the C programming language and since version 3.0 is no longer based upon any code from Blackbox. Since at least 2010, it has been considered feature complete, bug free and a completed project. Occasional maintenance is done to keep it working, but only if needed.
via Wikipedia infobox

Link to the official site · 3,397 chars · not written by Vinony
~3 min read
Openbox is a free, stacking window manager for the X Window System, licensed under the GNU General Public License. Originally derived from Blackbox 0.65.0 (a C++ project), Openbox has been completely re-written in the C programming language and since version 3.0 is no longer based upon any code from Blackbox. Since at least 2010, it has been considered feature complete, bug free and a completed project. Occasional maintenance is done to keep it working, but only if needed.
Openbox is designed to be small, fast, and fully compliant with the Inter-Client Communication Conventions Manual (ICCCM) and Extended Window Manager Hints (EWMH). It supports many features such as menus by which the user can control applications or which display various dynamic information.
Link to the source-code README · 800 chars · not written by Vinony
via Wikidata · CC0
via Wikidata sitelinks · CC0
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).