Custom Cascade Compare is a private, non-commercial open-source search comparison tool by Oliver Salzmann under the project name CustomOssDesign.
It opens a search term directly at selected external search providers. Compare mode can open several providers at once. Search terms are not sent to the project operator.
- General, news, item and image searches
- Compare mode for multiple providers
- Custom source lists
- Five interface languages
- Optional Matrix background and ambient sound
- Browser-local preferences only after deliberate changes
- No user account, advertising tracker or public usage counter
- Voluntary email contact for bug reports, feedback and requested project updates
Open index.html locally in a modern browser or visit the GitHub Pages version:
https://customossdesign.github.io/Custom-Cascade-Compare/
Browsers may block multiple tabs opened by compare mode. The built-in popup help explains how to allow them for this page.
The tool itself does not receive or store search terms. Selected external providers receive searches directly and apply their own privacy policies. Deliberately changed preferences and source lists are stored only in the browser.
The published website is hosted with GitHub Pages. GitHub documents that visitor IP addresses are logged and stored for security purposes. Complete privacy and provider information is available through the information button inside the tool.
Released under the MIT License.
Copyright © 2026 Oliver Salzmann.