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.
Forksy - А chat bot for tracking calories and eating healthy
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
Chomp Food & Nutrition Database - API for grocery products, branded foods, & raw ingredients.
Tcpdf - TCPDF: Open Source PHP Class for generating PDF documents
Calorie Mama AI - Automatically count calories by taking food photos