18.2
OpenSanctions provides a structured database of sanctions, politically exposed persons, and other public-interest information collected from hundreds of sources.
Free planOpen sourceWebAPILinux
Best Web Data Providers Software in 2026
Web data provider software gives access to datasets gathered from online sources. Delivery may use a web service, API, self-hosted setup, browser extension, Linux or iOS. Check platform details for an Android app before choosing. Compare free-plan access, paid-from pricing, data delivery, refresh frequency, historical data, custom datasets, geographic coverage and data categories.
27.6
Wappalyzer turns public signals from websites into technographic data for prospecting, record enrichment, and monitoring market changes.
Free planAndroidiOSWeb
37.2
BuiltWith profiles websites to show the technologies and online activity associated with them.
Free planWebAPIExtension
- 4
Coresignal
Coresignal provides real-time public web data about companies, jobs, and professionals through APIs and flat-file datasets.
Free planWebAPI7.2From $49 a month - 5
Diffbot
Diffbot uses AI models to turn unstructured web content into linked knowledge.
Free planWebAPISelf-hosted6.9From $299 a month - 6
Event Registry
Free planWebAPI6.9Free plan - 7
PublicWWW
PublicWWW searches web page HTML, JavaScript, CSS, and plain text for snippets, signatures, or keywords.
Free planWebAPI6.7From $199 a month - 8
Shodan Monitor
Shodan Monitor tracks Internet-connected devices and sends real-time notifications when unexpected devices or events appear.
WebAPILinux6.3From $69 a month - 9
OpenCorporates
OpenCorporates provides access to data on over 200 million companies across 140 jurisdictions.
WebAPI6.2From £2,250 a year - 10
Internet Archive Save Page Now
AndroidiOSWeb5.4 - 114.6
- 124.6
- 134.6
- 144.4
Choosing well
Check the plan and starting price
A free plan, free trial or paid plan can change how you evaluate a provider. Confirm what access is included before committing.
Published pricing varies. Diffbot lists paid access from $299 per month, while PublicWWW lists paid access from $49. OpenSanctions lists paid access from €0.10 and a 30-day trial.
Match delivery to your workflow
Review whether data arrives through a web interface, API, self-hosted setup or browser extension. Linux and iOS are also listed platform options.
Compare refresh and history
Use refresh frequency to judge how current the data can be. Historical-data coverage matters when you need to examine earlier records or changes over time.
Check coverage and dataset options
Compare geographic coverage and data categories against the regions and subjects you need. Custom-dataset support can matter when standard collections do not match your project.
Review code and access terms
Open-source code is available from items in this category. If you need to read or change the code, check the licence and the terms attached to the data and delivery method.
Questions people ask
Can I start with a free plan?
A free plan is offered by items in this category. Check the provider’s plan details to see what data and delivery methods it includes.
Which delivery methods can I compare?
Listed platform options include web, API, self-hosted setup, browser extension, Linux and iOS. Confirm the exact method offered by a provider.
Can I get historical data?
Historical data is a comparison field for this category. Review the provider’s stated history coverage before choosing.
Are custom datasets available?
Custom datasets are a comparison field for this category. Check whether the provider supports the dataset format and scope you need.