Small tools that do one job well.
Zelenye Solutions builds focused browser extensions for developers. Each tool does one thing, runs locally in your browser, and never collects your browsing data.
See productsProducts
Chrome extension
CORS Switch
Turn CORS off for the sites you choose while you develop — with one click, per site, and with an automatic shut-off so you never forget it on.
Learn more →How we build
Local first
Everything runs in your browser. Your settings stay on your device.
No tracking
No analytics, no ads, no data sold or shared. Ever.
Minimal permissions
We ask only for what the feature needs, and explain why.
Contact
Questions, bug reports or billing help: support@zelenye.com. We usually reply within one business day.