Quality add-ons for Internet Explorer are few and far between. Unlike Chrome or Firefox, there just isn’t as large a community of independent developers devoted to creating useful enhancements for Microsoft’s web browser. Newer versions of IE have rendered many older add-ons obsolete. Others are actually shareware that allow for free use only during trial periods, which you find out are in fact this after you’ve gone through the trouble of installing them. But we did find nine noteworthy candidates.