DocRaptor - As the only API powered by the Prince HTML-to-PDF engine, DocRaptor provides the best support for complex PDFs with powerful support for headers, page breaks, page numbers, flexbox, watermarks, accessible PDFs, and much more

AutoResponder for WhatsApp - AutoResponder for WhatsApp is a bot that you can set up on your personal or business account to automatically reply to every custom received message.

pdflayer - Free, powerful HTML to PDF API supporting both URL and raw HTML conversion. Unlimited document size, lightning-fast and compatible PHP, Python, Ruby, etc.

Auto Message - Auto Message is a scheduling app that offers several features such as sending automated emails, automatically answering calls & sending SMS/text messages.

PDFCrowd - Pdfcrowd is a Web/HTML to PDF online service. Convert HTML to PDF online in the browser or in your PHP, Python, Ruby, .NET, Java apps via the REST API.

WhatsBot - WhatsBot is an all-in-one tool that allows you to set up a personalized ChatBot for the purpose of auto-replying to all the incoming messages on WhatsApp.