What Software Does a Business Analyst Need?

Recently ran across a blog post that outlines the software that's imperative for Business Analysts to use or forget when going for a job or trying to keep the job that they currently hold. Kingsley Tagbo writes, he core business analyst skill sets does not really include software skills. However, in the current job market, IT Managers are cutting costs by hiring business analysts with specific software skills. Traditionally, business analysts have had to learn the specific software used by a business after they get hired. Tagbo also outlines what the current environment is like for Business Analysts. Check out the blog post here. What software is a must have for Business Analysts? Do you agree with Tagbo?