10 Most Useful Websites You've Never Heard Of

You can see Amazon price history, real tech salaries, hospital prices, car recalls, medical device reports, flight tracking, ship tracking, campaign donors, and SEC filings — all for free. In this video, Cool Dude Explains breaks down 10 free websites and tools that reveal hidden information most people never check. Keepa, Levels.fyi, FollowTheMoney.org, EWG Skin Deep, FlightRadar24, VesselFinder, SEC EDGAR, FDA MAUDE, NHTSA, and Turquoise Health. If you’ve been searching for free websites that reveal hidden info, Amazon price tracker free, real salary data, hospital price transparency, car recall check, campaign finance tracker, or free data tools USA, this list will save you money, time, and bad decisions. 🔹10 Free Truth Tools Covered: • Keepa – Free Amazon price history tracker & alerts • Levels.fyi – Crowdsourced tech salary data by company, level & location • FollowTheMoney.org – State-level campaign finance & donor tracking • EWG Skin Deep – Cosmetics & personal care ingredient safety database • FlightRadar24 – Real-time flight tracking & delay truth • VesselFinder – Real-time ship tracking & supply chain visibility • SEC EDGAR – Every public company filing: revenue, risk, insider trades • FDA MAUDE – Medical device adverse event reports & recalls • NHTSA – Car recalls, complaints, investigations & crash ratings • Turquoise Health – Actual hospital prices for surgeries, scans & tests ⚠️ Honest Notes: • Keepa only works on Amazon. • Levels.fyi is strongest for big tech; smaller companies have less data. • FollowTheMoney covers state politics; for federal races use OpenSecrets. • EWG Skin Deep rates hazard, not real-world risk. It’s a starting point, not a verdict. • FlightRadar24 and VesselFinder can have coverage gaps over oceans or conflict zones. • SEC EDGAR is dense and legalistic — not light reading. • FDA MAUDE reports are voluntary and incomplete. • NHTSA complaints are self-reported. • Turquoise Health data can be messy; not every hospital complies perfectly. ⏱️ Timestamps: 00:00 – Keepa: Amazon Price History Tracker 01:21 – Levels.fyi: Real Tech Salary Data 02:35 – FollowTheMoney.org: Who Funds Politicians 03:50 – EWG Skin Deep: What’s Really in Your Products 05:02 – FlightRadar24: Track Any Flight in Real Time 06:09 – VesselFinder: Track Ships & Supply Chains 07:12 – SEC EDGAR: Read What Companies Must Disclose 08:10 – FDA MAUDE: Medical Device Problems & Recalls 09:06 – NHTSA: Car Recalls, Complaints & Safety Ratings 09:58 – Turquoise Health: Real Hospital Prices 📚 Watch the full Cool Dude Explains playlist here: Playlist [1] https://youtube.com/playlist?list=PLINq0yDosF-c&si=CgcRwJ8uxkYSLuWY Playlist [2] https://youtube.com/playlist?list=PLJjnvO9sL8wo&si=xtwCoyypn6Hpy_bC Playlist [3] https://youtube.com/playlist?list=PLAewQWjVFnMU&si=EHXBp1gayJ50JgDz 🔔 Subscribe to Cool Dude Explains for more free tools, consumer tips, and educational breakdowns: https://youtube.com/@CoolDudeExplainsReal?si=eCQ0e5enKmy8_38C #CoolDudeExplains #FreeWebsites #HiddenInfo #Keepa #LevelsFYI #FlightRadar24 #SECEDGAR #NHTSA #TurquoiseHealth #AmazonPriceTracker #SalaryTransparency #ConsumerRights #DataTools #FreeTools2026