June for Slack - Instant analytics, right in Slack
Smaller - Make your websites load faster
Adalyz - Compare Your Google Adwords Vs Facebook Ads Vs Instagram Ads and decide where to put your money. Powerful analytics and reporting for your ad campaigns.
Website Grader - Grade your website's strengths and weaknesses in seconds.
June - Instant analytics reports, built on top of Segment
Checkbot - Checkbot will boost the SEO, speed and security of your site by checking you're following 50+ web best practices. Browser extension with free and paid plans.