3taps - Data Exchange

Alexa Web - Web traffic data

Amazon - Online Shopping

Amazon Product API - Amazon's product catalog

Amazon S3 - Cloud storage

Amazon SQS - Managed Queue Service

AWS - Cloud computing platform

AWS - Amazon Simple Workflow - Orchestration service for building scalable distributed applications

American Fuzzy Lop / AFL - Fuzzer that employs genetic algorithms in order to efficiently increase code coverage of the test cases

Archive.is - time capsule for web pages

Archive.org - Internet Archive

Arista EOS - Network Operating System

ARK - Blockchain Solutions

ArrayFire - high performance library for parallel computing

Ascribe - Register and License Intellectual Property

Authorize.net - Payment gateway

Azure - Cloud computing platform

Backblaze - cloud backup and storage provider

Balanced - Payments for Marketplaces

Bearer.sh - API integrations platform

BigML - Machine Learning Made Easy

Bing - Microsoft search engine

Bitcoin - Open source P2P money

Bitly - URL shortener

Bitstamp - Buy and sell bitcoins

Blogger - Blog-publishing service

Box - Online file sharing

Braintree - Accept Payments Online

Buildkite - Continuous Integration

Carriots - M2M Application Platform

Challonge - Tournament Brackets

Chargify - Recurring billing application

Close.io - Sales communication platform

Coinbase - Bitcoin Wallet

CoinPayments - checkout system for cryptocurrencies

Countries - Country Information

Craigslist - Classified advertisements

Delicious - Social bookmarking service

Discogs - Marketplace for Music on Vinyl, CD..

Discord - All-in-one voice and text chat for gamers

Discourse - Civilized discussion

Disqus - Blog comment hosting service

Docker - an open platform for distributed applications for developers and sysadmins

Dribbble - community for showcasing user-made artwork

Dropbox - File hosting service

Duktape - Embeddable JavaScript engine

Ebay - Online auction and shopping

Embedly - Front-end developer tools

Evernote - Notetaking software

Expedia - A travel website

Facebook - Social networking service

FedEx - Global courier delivery services

Flickr - Image and Video hosting

Forecast - Weather forecasting

Foursquare - Location based networking

FullContact - Manage your contacts

Genius - Song lyrics and annotations

Geocodio - Ridiculously affordable geocoding

Geopy - Geocoding for Python

GitHub - Online project hosting

GitLab - Online and self-hosted Git repository management

Gmail - Web-based e-mail service

Google Charts - Interactive charts for browsers and mobile devices

Google Cloud Functions - Serverless environment to build and connect cloud services

Google Drive - File storage service

Google Maps - Web mapping service

Google Music - Google Music

Google Search - Unofficial API for Google Search

Google Sheets - create and edit spreadsheets online, for free.

Google Spreadsheet - Online Spreadsheets

Google Translate - Translation Service

GoPro - cameras

Hacker News - Social News

Hadoop YARN - Apache Hadoop NextGen MapReduce (YARN)

Heroku - Cloud Application Platform

Highrise - Contact management tool (CRM)

HipChat - Hosted group chat and IM

HubSpot - Marketing, Sales, and CRM software

IEX - Real-time and historical stock prices

iFixit - The free repair manual

iFormBuilder - Mobile Data Collection Software

iHackernews - Hacker News Mobile

Imgur - Simple Image Sharer

Indeed - Search engine for jobs

Instagram - Online photo sharing

Intercom - Marketing and Customer support

Investopedia - Stock Simulator

IP Street - patent data and analytics algorithms as a service

iTunes Store - Search engine for iTunes content

Jira - Issue tracking product

Kite Connect - Stock trading APIs

Last.fm - Online music

LightGBM - gradient boosting framework by Microsoft

LinkedIn - Professional Social Network

Loggly - Cloud-based logging

Medium - blog publishing platform

Meetup - Offline group meetings

Mega - Free cloud storage

Mercury - take any web article and return only the relevant content

Metwit - Social and crowdsourced weather

Mixcloud - Social music streaming

MLB GameDay - Real-time MLB data

MonkeyLearn - Machine Learning for Text Analysis

Musixmatch - Explore the world's largest catalog of song lyrics and translations

NASA - National Aeronautics and Space Administration

NBA Stats - NBA Advanced Stats

Netflix - On-demand streaming media

Netflix Roulette - Get a random movie from the Netflix catalog and watch it instantly

New York Times Archive API - The Archive API provides JSON lists of articles by month

News API - JSON API for live news and blog headlines

OneTimeSecret - Self-destructing messaging service

Onfleet - Last mile delivery management service

OpenWeatherMap - Weather Service

PagerDuty - IT alert monitoring

Peercoin - Open source P2P money

Pinterest - Pinboard-style sharing

Pixoto - Online photo sharing platform

Phaxio - Faxing for Developers

Phish.AI - Detect zero-day phishing websites

Photobucket - Image hosting and video

Plot.ly - Easily analyze data together

Polar Devices - Watches and devices

PubMed - database of medical publications

Rackspace - Open cloud company

Reddit - Social news aggregation and discussion

RottenTomatoes - Film review aggregator

Salesforce - Cloud computing company (CRM)

SAS - business intelligence software

Scaleway - Cloud computing platform

Scrapinghub - Scraping services

SendGrid - Email API for developers

Shodan - Search engine for Internet-connected devices

Skyscanner - Travel metasearch

Slack - Team Communication Platform

Python Wrappers

Slideshare - Slide hosting service

SmartFile - File management service

Socrata Open Data API - Data discovery for government data

Soundcloud - Share your sounds

Sportradar - Broad range of sports APIs

Spotify - Music streaming service

Spreedly - Cloud based credit card vault

Stack Exchange - Community-Powered Q&A

Stanford CoreNLP - simple API for text processing tasks

Stripe - Payments for developers

SunlightFoundation - Sunlight Foundation

Syncthing - Decentralized data sync

Taiga - Project management

Technorati - Searching blogs

Telegram - Mobile and desktop messaging app

Temp Mail - Anonymous emails

Tesseract OCR - OCR Engine

The Echo Nest - Music services

The Pirate Bay - Peer-to-peer file sharing

The Movie Database - Movie and TV Database

Official Site

Wrappers

easytmdb 0.2.0 : Python Package Index

themoviedb themoviedb.org wrapper for api v3

themoviedb Python wrapper to themoviedb.org API

themoviedb Python wrapper to themoviedb.org API

TheMovieDB.bundle

[themoviedb-json] Unofficial themoviedb.org python api wrapper

[tmdb] Python Package Index

TMDB Small application using TMDB APIs

tmdbsimple - A Python wrapper for The Movie Database API v3

[tmdb3] 0.7.0 : Python Package Index

TinyURL - URL Shortner

Trello - Kanban boards

Tuenti - Social networking service

Tumblr - Microblogging platform

TheTVDB.com - Community driven database of television shows

Official Site

Wrappers

gnarlytvdb: A python interface to thetvdb.com xml api

pytvdb: A python library for interacting with TheTVDB.com API

PyTVDB: a Python module for the thetvdb.com API

pytvdbapi: A clean, resource friendly and easy to use API for thetvdb.com

thetvdb_api: A Python API for theTVDB.

tvdb: Module for accessing the Web API at TheTVDB.com

TVDB Caching API

dbr/tvdb_api: Interface to thetvdb.com

fuzeman/tvdb_api

tvdbpy: Yet another TvDB API Python wrapper. Work in progress.

Twilio - SMS and Voice through the cloud

Twitter - Online microblogging service

Uber - Taxi, private car or rideshare service

Udacity - Online University

Udemy - Online University

Unirest - Set of lightweight HTTP libraries

UPS - Package Delivery

UrbanDictionary - Web-based dictionary

Vault - A tool for managing secrets.

Vimeo - Video-sharing website

VK - Social networking service

Walmart Open API - access to the Walmart product catalog

WhatsApp - Mobile and desktop messaging app

Wikipedia - Wikipedia

Windows Azure - Microsoft's Cloud Platform

World Bank - Collection of development indicators

World Weather - Weather Service

WooCommerce - Ecommerce

Wordnik - Online dictionary

Wunderlist - Task Management Application

Yahoo - Web portal, search engine

Yahoo Query Language - SQL-like query language

Yelp - Local search website

You Need a Budget (YNAB) - Personal budgeting software

YouTube - Video-sharing website

Zoop - Payment Gateway