官网上有对5个用户的解释：Total number of unique users in your company (in case of internal application) or in ALL the companies that are your customers (in case of OEM/SaaS solution) that access CKEditor at least once in a month.也就是说如果你是公司内部用，就是你公司的用户数，如果你是做Saas，就是你所有客户的用户数加起来，他不会来统计，需要你们自觉遵守并购买合适的License。