Sieve - Site & Content Blocker by Monolab Co.

🛡 Sieve – Content Filter & Site Blocker

The modern web is full of scams, manipulative design, toxic comments, and bottomless feeds. Sieve quietly cleans all of that up and hands control back to you — and it runs entirely on your device. No account, no sign-up, no analytics. Nothing you browse ever leaves your browser.

Everything is modular. Switch on exactly the protections you want.

🧹 ON-PAGE CLEANUP
🤬 Bad Language Filter – Masks profanity as you browse. Choose blanks (████), asterisks (f***), or lighthearted word swaps, add your own words, or enable a stricter family-safe mode.
🙊 Toxic Comment Hider – Automatically collapses hostile, hateful, and abusive comments on YouTube, Reddit, X (Twitter), and Disqus. Includes an optional AI toxicity model that runs fully on your device, plus adjustable sensitivity and per-site control.
🎭 Dark Pattern Blocker – Neutralizes manipulative design: fake countdown timers, guilt-trip "no thanks" buttons, pre-checked boxes, and manufactured scarcity ("Only 2 left!").
🍪 Cookie Auto-Reject – Automatically rejects non-essential cookie-consent banners so you stop clicking through them.
🚫 Popup & Click Hijack Blocker – Stops popups and pages that hijack your clicks, with a one-click "allow" for sites you trust.

🚧 BLOCK HARMFUL & DISTRACTING SITES
Most are off by default — switch on what fits you. The blocklists update automatically.

🎰 Gambling & Betting – Blocks online casinos, sportsbooks, and betting sites.
🔮 Prediction Markets – Blocks Polymarket, Kalshi, and similar platforms that rebrand betting as "forecasting markets."
🪙 Crypto & Investment Scams – Blocks known crypto scams, phishing, and fraud sites.
📈 Trading & Exchange Sites – Blocks exchanges and trading platforms (Coinbase, Robinhood, forex, and more) to help you stay away from speculative trading.
🔺 MLM Schemes – Blocks known multi-level-marketing sites — recruitment schemes where most participants lose money.
🦠 Malware & Phishing – Blocks known phishing, fake-login, and malware sites.
⛏ Cryptojacking – Blocks sites that secretly use your device to mine crypto, draining your battery and slowing your computer.
🏴☠ Piracy & Illegal Streaming – Blocks torrent, warez, and illegal-streaming sites (which are often malware-ridden).
🤖 AI Content Farms & Spam – Blocks mass-produced AI-generated spam articles, fake reviews, and content-farm sites that clutter search results.
🛒 Fraud & Fake Shops – Blocks known fraud, scam, and fake-shop sites (fake stores, refund scams, impersonation).
⚠ Gore & Shock Sites – Blocks a curated list of known gore and shock-content sites.
💔 Dating Sites – Blocks mainstream and hookup dating sites (Tinder, Bumble, Match, Grindr, and similar) — for shared or younger-user browsers, or your own focus.
📝 Custom Block List & Allowlist – Block any site you choose, or allow ones you trust — applied across every blocker.
🔗 URL Shortener Resolver – Reveals what's really behind shortened links (bit.ly, tinyurl, etc.) and checks them against your protections before you click.

🧘 DIGITAL WELLBEING
⏳ Doomscroll Stopper – Set a daily time limit for endless feeds (YouTube, Reddit, X, Instagram, TikTok, Facebook). When you reach it, a gentle pause screen helps you step away.

🎛 STAY IN CONTROL
🔒 Guardian Lock – Optionally set a PIN. Weakening your protection (turning a module off, or allowing a blocked site) asks for the PIN, while strengthening it is always free — a simple way to lock in your good intentions, for yourself or your household.
📊 Protection Dashboard – See exactly what Sieve blocked for you, today and this week.

🔐 PRIVACY FIRST
Sieve has no account, no analytics, and no servers collecting your data. All filtering and blocking happens locally in your browser — even the optional toxicity model runs on your own device.

✨ Free and open source.