wxWidgets - wxWidgets: Cross-Platform GUI Library
Plaid - Infrastructure that powers financial technology by enabling applications to connect with users' bank accounts.
Electron - Build cross platform desktop apps with web technologies
Verafin - Verafin provides compliance, anti-money laundering, and fraud detection software.
GTK - GTK+ is a multi-platform toolkit for creating graphical user interfaces.
QuoteMedia - Financial web tools that allow users to access real-time stock quotes, with live charts and NASDAQ level 2 data.