ProtoPie is the easiest tool used to turn your UI/UX design ideas into highly interactive prototypes for mobile, desktop, web, all the way to IoT. Designers can explore, validate, and test design solutions and ideas by creating very realistic, production-like prototypes without code and the help of engineers.

Hence, ProtoPie helps companies to release better and validated products, allows them to go to market faster, and save costs throughout the process by revolutionizing their prototyping workflows.

ProtoPie is widely used at various companies all over the world across industries, e.g. Google, Microsoft, GoPro, Samsung, Nintendo, BMW, IDEO, Reddit, Bytedance, Huge, and Verizon.

TryDiff is a free online text and file comparison tool built for speed and simplicity. Paste or upload two files to instantly see differences side-by-side, with added, removed, and modified lines highlighted. No signup required — just open the site and start comparing.

Built for developers, writers, students, and analysts who need a fast, clean alternative to Diffchecker, Beyond Compare, and Meld. Works entirely in-browser, supports text and common file formats, and lets you download diff results.

Live at trydiff.com. Part of AIthinker LLC's lineup of no-signup developer utilities.