Visily - The easiest and most powerful wireframe software for agile teams.
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
PSD to Sketch Design Converter - Convert a Photoshop design to a layered Sketch file for free
Magicul.io - Convert between Adobe XD, Figma, PDF, Illustrator, Sketch and more with 1 click
Zeplin - Collaboration app for UI designers & frontend developers
CraftMyPDF - Auto-generate PDFs with a drag&drop editor and a simple API