We build simple, powerful tools that help everyone work smarter. 100+ free, open-source, and privacy-focused utilities.
ToolStack was created with one simple goal: to provide everyone with the tools they need without the bloat, ads, or privacy concerns that plague most online utilities.
Every tool runs entirely in your browser. We don’t collect your data, we don’t track you, and we never will. Your text, passwords, and files never leave your device.
We found ourselves constantly searching for simple tools—a quick way to format JSON, calculate compound interest, or generate a password. Most solutions were cluttered with ads, required sign-ups, or sent data to unknown servers.
We decided to build something better. A clean, fast, and trustworthy suite of tools that respects your privacy and gets the job done.
Explore our collection of 100+ free online tools and boost your productivity today.