Booking.com

Airbnb, Inc. is an American company that operates an online marketplace for lodging, primarily homestays for vacation rentals, and tourism activities. Based in San Francisco, California, the platform is accessible via website and mobile app. Airbnb does not own any of the listed properties; instead, it profits by receiving commission from each booking. The company was founded in 2008 by Brian Chesky, Nathan Blecharczyk and Joe Gebbia. Airbnb is a shortened version of its original name, AirBedandBreakfast.com.

The company has been criticized for possibly driving up home rents and creating nuisances for those living near leased properties. The company is regulated by many jurisdictions, including the European Union and cities such as San Francisco and New York City. It is viewed as a competitive threat by the hotel industry.

Uber Technologies, Inc., commonly known as Uber, is an American mobility as a service provider based in San Francisco, with operations in over 900 metropolitan areas worldwide. Its services include ride-hailing, food delivery (Uber Eats and Postmates), package delivery, couriers, freight transportation,electric bicycle and motorized scooter rental via a partnership with Lime, and ferry transport in partnership with local operators. Uber does not own any vehicles; instead, it receives a 25% commission from each booking. Fares are quoted to the customer in advance but vary using a dynamic pricing model based on the local supply and demand at the time of the booking.

Safari is a graphical web browser that is developed by Apple. It is primarily based on open-source software properties, and mainly WebKit. It succeeded Netscape Navigator, Cyberdog and the most recent Internet Explorer for Mac as the default web browser for Macintosh computers. It is supported on macOS, iOS, and iPadOS; a Windows version was offered from 2007 to 2010.

Safari was introduced within the Mac OS X Panther in January 2003, and as of 2021, spawned a total of 15 revisions. The third generation (January 2007) brought compatibility to the iPhone via iPhone OS 1, while the Macintosh edition was topped with the fastest browser performance at that time. The fifth version (June 2010) made uses of a less distracted screen reader, extension and developer tools; it was also the final version for Windows. In the eleventh version (September 2017), it added supports for the Intelligent Tracking Prevention. The thirteenth version included various privacy and application updates such as the FIDO2 USB security key authentication and Web Apple Pay support. The fourteenth version (November 2020) was the most-previous revision of Safari. The 2020 version was 50% faster than Google Chrome, and it consumed less battery than other standard competitors. The fifteenth version (July 2021) was the current revision, featuring a redesigned interface.

Skype Technologies S.A.R.L (also known as Skype Software S.A.R.L, Skype Communications S.A.R.L, Skype Inc., and Skype Limited) is a Luxembourger telecommunications company headquartered in Luxembourg City, Luxembourg, whose chief business is the manufacturing and marketing of the video chat and instant messaging computer software program Skype, and various Internet telephony services associated with it. Microsoft purchased the company in 2011, and it has since then operated as their wholly owned subsidiary; as of 2016, it is operating as part of Microsoft's Office Product Group. 
Skype, a voice over IP (VoIP) service, was first released in 2003 as a way to make free computer-to-computer calls, or reduced-rate calls from a computer to telephones. Support for paid services such as calling landline/mobile phones from Skype (formerly called SkypeOut), allowing landline/mobile phones to call Skype (formerly called SkypeIn and now Skype Number), and voice messaging generates the majority of Skype's revenue.

Google Meet (formerly known as Hangouts Meet) is a video-communication service developed by Google. It is one of two apps that constitute the replacement for Google Hangouts, the other being Google Chat.