Description: Openki is an open-source software for operating participatory courses and learning spaces. It allows users to organize events, manage participants and content, facilitate communication and collaboration.
Type: software
Pricing: Open Source
Description: Stack Overflow is a popular question and answer site for programmers. Users can ask coding questions and receive answers from a community of developers. The site has a reputation system to rate helpful responses.
Type: software
Pricing: Subscription