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| abstractapi.com | IP-Addresses and Locations |
| feefo.com | Travel Reviews |
| flickr.com | Photo Community |
| google.com | Online static and dynamic maps, Geolocation, Charts, QR-Codes |
| ipapi.co | IP-Addresses and Locations |
| ipinfo.io | IP-Addresses and Locations |
| openexchangerates.org | Online Currency Exchange Rates |
| openweathermap.org | Online Weather |
| pixabay.com | Free, high-quality pictures |
| shutterstock.com | Pictures (Country Banners) |
| stripe.com | Payment Gateway |
| touropia.com | Movies of destinations |
| travel global (youtube) | Movies of destinations |
| trustpilot.com | Travel Reviews |
| wikipedia.com | Online encyclopia with background information |
| wunderground.com | World Time and Weather |
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| jquery.com | Powerful Library with Cross-Browser JavaScript-routines |
| letsencrypt.org | Free SSL-certificates |
| twilio.com | Automated SMS Generation |
| vimeo.com | (embedded) Videos |
| websupergoo.com | Abcpdf, Creating PDF files on-the-fly |
| youtube.com | (embedded) Videos |
| zopim.com | Chat Software |
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| getyourguide.com | Day-Tours, Activities, City Attractions & Destinations |
| klook.com | Day-Tours, Activities, City Attractions & Destinations |
| rezdy.com | Software Services for Tour Operators |
| rezgo.com | Software Services for Tour Operators |
| tourcms.com | Software Services for Tour Operators |
| viator.com | Day-Tours, Activities, City Attractions & Destinations |
| (multiple networks) | Affiliate Marketing Networks (APIs) |
| (multiple operators) | Customised Tour Operator Software Systems (API's) |
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| www.facebook.com | Facebook |
| www.linkedin.com | LinkedIn |
| www.threads.net | Threads |
| www.twitter.com | Twitter |
| www.youtube.com | youTube |
| www.instagram.com | Instagram |
我们衷心感谢所有组织和公司的所有（和合作）的知识产权。 |