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Marketshare trends
The I/O Labs spider logs every cookie and JavaScript object it encounters and keeps that data historically. While not the primary use-case for the spider, the ability to find all websites using a particular cookie or JavaScript object can be useful for seeing technology used by websites over time.
Technology used
Different technologies used by websites typically leaves a cookie and/or JavaScript fingerprint. This could be used for marketshare research or simply to generate potential leads.
An example of this could be useful if your company is a competitor to Shopify. You can quickly get a list of the websites using Shopify for potential lead generation. You can export the list as well as set up real-time alerts as the spider encounters new sites going forward.
Piracy detection
Another use case would be if you offered a commercial product that gets installed on websites. You could get a list of the websites using your product and then compare that list against your licensed customers. For example, sites using vBulletin.
Spidering since 2013
| unique | total | |
| cookies | 1.2B | 14.1B |
| head | 55.2M | 1.6B |
| hosts | 309.6M | 2.3B |
| js | 1.7B | 16.7B |