PoweredBy vs Wappalyzer, a free alternative
Wappalyzer pioneered open-source technology detection and distributes a great browser extension. Its lists, reports, and exports, though, sit behind paid plans. PoweredBy keeps them free.
| Feature | PoweredBy | Wappalyzer |
|---|---|---|
| Browser extension | not yet | ✓ (their strength) |
| Single-site lookup on the web | ✓ free | ✓ free (limited) |
| Full lists of sites using a technology | ✓ free, uncapped | ✗ paid |
| Technology history / timeline | ✓ free, back to 2018 | ✗ limited |
| Market-share statistics | ✓ free | partial / paid |
| CSV downloads | ✓ free (top 10K) | ✗ paid |
| Detection ruleset | HTTP Archive Wappalyzer fork (shared lineage) | their own |
The short version: Wappalyzer wins on the extension. For free lists, history, and stats on a serious database, PoweredBy is the more generous option, same detection lineage under the hood.
Wappalyzer is a trademark of its owner. PoweredBy is not affiliated with or endorsed by Wappalyzer; this is an honest nominative comparison. Facts as of July 2026; corrections welcome via /bot.