Passlit Openbook
See every company tracking you in real time
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Rob Ames

Passlit Openbook - See every company tracking you in real time

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Every website loads tracking scripts without asking permission. Passlit Openbook detects every tracker on every site in real time. See exactly which companies are watching you and what they collect. finance.yahoo.com loaded 414 trackers on one page in May 2026. The average site loads 40+. Free to install. No account required. 50% off Shield with code PRODUCTHUNT50 at checkout.

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Rob Ames
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We built Passlit Openbook after running it on finance.yahoo.com and seeing 414 trackers load on a single page visit. Most people have no idea how many companies are recording their behavior on every site they visit. Openbook makes it visible instantly — no account, no setup required. Would love to hear what numbers you see when you install it on the sites you use most.