
Description: PanelJam is an open-source alternative to SurveyMonkey and Typeform for creating online surveys, polls, and questionnaires. It allows users to easily build multi-page surveys with branching logic, image choices, and more. PanelJam is self-hosted, customizable, and focused on privacy.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Interference is an open-source alternative to Figma for interface design, prototyping, and collaboration. It provides vector design tools and adaptive layout grids to design responsive web and mobile apps.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API