TripAdvisor - TripAdvisor for Developers

| location | vacation | trip | travel | b2b | partner |

Tropo - API Docs

| mobile | sms | text | cloud | communictions |

Twilio - Docs

| sms | voice | runtime | chat | chatbot |

Two Forty Four AM - Locale Developer API

| location| mobile |

U.S. Department of Health and Human Services - Healthfinder Developer API

| health | medical |

Ubuntu - Ubuntu Developer

| mobile | embedded | linux | rasberry pi |

Unblu - Technical Documentation

| customer experience | live chat | voice | video |collaborate |

Unify - Developer Program

| enterprise | cloud | collaboration | voice | phone | client |

Unity - Learn Unity

| 3D | games | video games | art | script | design | film | multimedia | elearning |

UPS - UPS Developer Kit

| delivery | courier | mail | shipping | tracking | logistics |

Veeva Vault - API and Docs

| cloud | content management | cms | enterprise | "

Verizon IoT Developer Program!

| mobile | iot | wireless network | services | device | connectivity | account |

Vimeo - Vimeo Developer

| video | streaming | cloud | storage |

Visa - Developer Center

| payments | transactions | financial | ecommerce | travel | identity |

Visual Helpdesk - Developer API

| help desk | ticket | support | contacts |