Apache is a free and open-source cross-platform web server software.
EmailJS is a cloud-based email delivery service that allows you to send emails directly from your client-side JavaScript code without the need for a server-side implementation.
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.
WhatsApp Business is a free to download app available on Android and iPhone using which businesses can connect with their customers.