List of the major online creative optimization companies. These are online platforms and systems that allow advertisers to fix or change components of their display ads, allowing them to significantly improve the performance of the advertising after gathering initial performance data. Many of these services allow advertisers to tailor and tweak their ads in real-time, after the advertisements have already been launched, making the process easier and not interrupting the placement of the ads and sacrificing efficiency. Some of these services also include mobile or social optimization tools, to make the advertising more friendly to the modern Web and the current online environment. Some of the listed companies include Sprout, Say Media, Adisn, SnapAds and AdReady.