Modern unblockers often disguise themselves as educational tools—such as a calculator that reveals a proxy interface only after clicking a specific button—to avoid detection by teachers or administrators. Methods to Unblock Sites via Google Tools
Many developers host the source code or "mirrors" of their unblockers on GitHub, which often contains links to their active Google Sites. google sites unblocker
Verdict Try it if you need a quick, easy way to unblock Google Sites; expect mixed reliability and verify any data-security implications before using it with sensitive content. easy way to unblock Google Sites