Non Software APIs

Popular first highlights editorial picks, then ranks providers by monthly downloads of their official SDKs on npm and PyPI (measured 2026-10-18). Others follow A–Z.

Holiday Lettings

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Homelike

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Horesca

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HostelBookers.com

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HostelsClub.com

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Hostelworld

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Hotek Hospitality

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HOTEL DE

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Hotel Online

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Hotelbeds

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Hotelchamp

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Hoteliers.com

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HotelREZ

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Hotels.com

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Hotels.nl

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HotelSpecials.nl

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Hotusa

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Hotwire

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How to GraphQL

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HR Square

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i-escape

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igniteXL

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Influx

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INFUSEO

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JacTravel

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Jefferson Health

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Jumbo

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Keytel

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Kids Vakantiegids

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KLM Royal Dutch Airlines

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KOEDIA

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kuleuven

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lastminute.com

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LateRooms.com

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Leviathan Security Group

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Linford & Company

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Logeren in Vlaanderen

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Mercier Vanderlinden

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Mirai

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Mobiliteitsbudget

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Moqod

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MountVacation

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Mr & Mrs Smith

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MyBoutiqueHotel

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National Bank of Belgium (NBB)

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NetAPINotes

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NetToHotel

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NextConomy

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Counts reflect unique named profiles assigned to this category. Documentation and integration details vary by provider.