Tipue Search is released under the MIT License. It's free for both commercial and non-commercial use. It doesn't show advertising or branding. There's a demo.
Tipue Search has wide browser support. It works with Chrome 49+, Edge 16+, IE10+, Firefox 58+, Safari 11+, iOS Safari 10.3+, Chrome for Android 66+, Samsung Internet 4+ and most recent browsers.