Description: Commento is an open source and self-hosted commenting platform for the web. It allows website owners to easily embed a commenting section on pages with customizable features and moderation tools.
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