Side by side
TechnologyChecker vs WhatRuns
Both stand on technographic data software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Choose TechnologyChecker if your team needs technology detection, historical timelines, or technology change signals for B2B sales or market analysis. The Free plan provides 100 monthly lookups; Pro or Scale may suit teams needing higher lookup limits, longer history, or additional capabilities. Lookups stop when the monthly limit is reached until the next billing cycle or an upgrade.
Visit TechnologyCheckerWhatRuns can help identify technologies on a website and alert users to changes. Treat its findings as a reference, since detection is not definitive.
Visit WhatRunsThe facts
| TechnologyChecker | WhatRuns | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | API, Extension, Web | Extension, Web |
| Lowest paid plan | Pro: $89 a month | Free or on request |
| Plans published | 4 | 1 |
| Maker | Not published | Not published |
| Website | technologychecker.io | whatruns.com |
| On technographic data software | #16 of 31 | #20 of 31 |
TechnologyChecker: what it does well
- Detects 40,000+ technologies across 29.9M live business domains.
- Uses multiple signals, including HTTP headers and DNS lookups.
- Historical technology timelines reach roughly 20 years.
- Provides real-time adoption, churn, and replacement signals.
- Offers a Chrome extension alongside web and API access.
What to know first
- Free plan allows 100 lookups per month.
- Free plan includes only six months of historical data.
- Lookups pause at the monthly plan limit until renewal or upgrade.
WhatRuns: what it does well
- Free
- No sign-up required
- Identifies apps, CDNs, trackers, plugins and fonts
- Alerts when a website's technology changes
- Available for Firefox and Chrome
What to know first
- Technology detection can have false positives or negatives
- Historical technology data is not available
Alternatives to TechnologyChecker Alternatives to WhatRuns The whole list