Optimizely - A/B testing you'll actually use.
Hashtag Generator #HashMe - HashMe is a hashtag generator application for iOS that lets you get more likes and followers with a wider reach of the post.
VWO - Use VWO to tweak, optimize & personalize your website with minimal IT help.
Text Replacer - Text Replacer allows performing mass replacement of multiple occurrences of text in selected files or folders.
Google Analytics - Improve your website to increase conversions, improve the user experience, and make more money using Google Analytics. Measure, understand and quantify engagement on your site with customized and in-depth reports.
HashtagsGenerator.net - The hashtags generator for Instagram and TikTok will help you to generate the most popular hashtags based upon your keyword.