Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.
Express is a web application framework for Node.js, released as free and open-source software under the MIT License. It is designed for building web applications and APIs.
Facebook pixel is an analytics tool that allows you to measure the effectiveness of your advertising.
Google Analytics is a free web analytics service that tracks and reports website traffic.
Google Tag Manager is a tag management system (TMS) that allows you to quickly and easily update measurement codes and related code fragments collectively known as tags on your website or mobile app.
Heap is an analytics platform.
Hyros is a marketing analytics and optimisation platform.
Microsoft's Clarity is a analytics tool which provides website usage statistics, session recording, and heatmaps.
Rewardful is a way for SaaS companies to setup affiliate and referral programs with Stripe.
Sentry is an open-source platform for workflow productivity, aggregating errors from across the stack in real time.
Stripe offers online payment processing for internet businesses as well as fraud prevention, invoicing and subscription management.
Wistia is designed exclusively to serve companies using video on their websites for marketing, support, and sales.