The 1.5.0 version of WorldEditor for Mac is available as a free download on our software library. This Mac download was scanned by our antivirus and was rated as clean. The program is included in Games. The latest installation package occupies 7.7 MB on disk. This free Mac application was originally produced by Laminar Research.
From the developer:
WorldEditor is an open source 2-d scenery and airport editor for X-Plane. Scenery in the X‑Plane simulator can include essentially everything outside the aircraft. X‑Plane is designed specifically to enable users to create and modify scenery themselves.
You may want to check out more Mac applications, such as Quiz Builder, rpgng or Petals Around The Rose, which might be similar to WorldEditor.