Final answer:
The Society of Women Engineers (SWE) is the organization focused on women engineers, open to all engineers regardless of gender.
Step-by-step explanation:
The organization that is primarily designed for women engineers but can be joined by anyone who is an engineer is the Society of Women Engineers (SWE). Other organizations such as AISES, NSBE, MAES, and SHPE are dedicated to supporting diversity and inclusion in engineering, with focuses on different ethnic groups or minorities in the engineering field. SWE, however, is particularly focused on supporting women in engineering and technology but welcomes members of all genders.