SEOULTRA Plugins
Browser Plugins & Extensions
Lightweight, open-source browser extensions built privacy-first. Everything runs on your device — no accounts, no tracking, no data leaves your browser.
Available extensions
Proxy Manager & UA Switcher
Manage proxies and switch your User-Agent per site or per tab. HTTP, HTTPS, SOCKS4 and SOCKS5 with per-profile authentication — all stored locally.
Works on ChromeEdgeOperaFirefox
PasteFilter
Catch API keys, passwords & personal data as you paste — block, mask, or swap in realistic fake data.
Works on ChromeEdgeOperaFirefox
More plugins coming soon
Why our plugins
Privacy first
No analytics, no telemetry, no fingerprinting. Your settings never leave your device.
Open source
Every line is auditable on GitHub. Install from the official stores or build it yourself.
Cross-browser
One consistent experience across Chrome, Edge, Opera and Firefox.