Regional Apps (India, LatAm, Europe, Russia) (Unofficial Web/App API Clients): open-source projects that exist because someone reverse engineered a closed product, sorted by GitHub stars.
Python client for Nubank's private API (statements, card, account)
Open alternative app for Stockholm's school platform via its unofficial API
Python library for NSE India website stock and index data
Node.js client for Nubank's private API
Downloads live and historical Indian market data from NSE/RBI websites
WebDAV server for Mail.ru Cloud and Yandex.Disk
Total Commander plugin for cloud.mail.ru
Unofficial Python wrapper for NSE India's website API
Browser extension that downloads videos from VKontakte
Shows the current Yandex Music track as Discord Rich Presence on Windows
Analyses your Swiggy order history fetched from Swiggy's private API
Unofficial Inshorts news API
Unofficial client for the Polish Librus Synergia school platform
Unofficial Python client for Zerodha's Kite web API
Unofficial Python API for NSE India stock exchange
Unofficial VKontakte messenger for Windows, macOS and Linux
High-level Nubank API client to download purchase records
Product parser for Ozon.ru
Unofficial Python wrapper for Indonesia's PDDIKTI higher education data API
Node.js wrapper for Israel's Pikud Haoref unofficial rocket alert API
Obtains VK tokens that work with VK's audio API
Unofficial app for the Hessian school portal (Schulportal Hessen)
Unofficial PHP class for the Gojek GoPay API
Async API client for the Russian "Setevoy Gorod. Obrazovanie" school system
Documentation for the Dutch SOMtoday school API
Unofficial Python API for BSE India stock exchange
Unofficial client for Wilma, the Finnish school information system
Reverse-engineered API for Indonesia's PDDIKTI higher-education database
Unofficial Gojek and GoPay API wrapper
Parses all products of a Wildberries seller
Python library for the private VK music API
Console app that exports Nubank card and NuConta transactions
Unofficial API for the SIGAA Brazilian academic system via web scraping
Reverse engineered API of German mobile carrier freenet FUNK
.NET client for cloud.mail.ru
Unofficial client for Denmark's Aula school platform
Scrapes VK post URLs for info and media
API client for Gojek's private app API
Unofficial Indian Railways API
Unofficial client for the Kdecole French school platform API
Client for the private API of EcoleDirecte, the French school platform
Eksi Sozluk unofficial API docs and client
Client for the private API of Preco da Hora, the Bahia (Brazil) price comparison app
Unofficial client for the Skolengo French school platform API
Unofficial API client for the Vulcan UONET+ Polish school e-register
Node.js client for Banco do Brasil's mobile API
Tokopedia private API client
Unofficial Python API for the IServ German school server platform
Node.js wrapper for undocumented NRK (Norwegian Broadcasting) APIs
Unofficial Indonesian QRIS merchant client for GoPay/GoBiz and ShopeePay
Paytm's internal API reverse-engineered in Node.js
Wrapper for the unofficial OVO e-wallet API (Indonesia)
Unofficial MCP server wrapping iFood's consumer web endpoints
Unofficial Python API for the Lanis Hessen school portal
Unofficial Python API for RTP Play media, based on its mobile API
Unofficial Node.js API for Cartola FC fantasy football
Reverse-engineered API of the GTU (Gujarat Technological University) results app
Unofficial API for the Edulink One UK school platform
Python library for the Dikidi salon booking platform, from reverse-engineered browser requests
Unofficial client for the Parcoursup mobile app API
Wrapper around the Skolengo school platform internal API
Python library for Tokopedia's private API
Unofficial HDFC Bank API to fetch recent transactions
Paytm internal APIs for Dart
Unofficial Python client for the SberMarket grocery delivery API
Python wrapper for PassCulture app