Codidact

Codidact is a community-run, open-source Q&A platform operated by a non-profit project. It brings together topic-based communities where members ask questions, provide peer-reviewed answers, and publish articles and other content, with a focus on curated knowledge sharing rather than commercial ownership.

The platform hosts communities covering software development, electrical engineering, mathematics, Linux and Unix, physics, linguistics, worldbuilding, Judaism, Christianity, cooking, role-playing games, writing, outdoor pursuits, photography, music, and network governance. A staging area supports proposals for new communities, and a process exists for groups of core users to propose additional Q&A sites. Codidact also notes a relationship with TopAnswers and points to its communities as an alternative for some topics.

Codidact is intended for people who want to participate in or build topic-focused Q&A communities, including professionals, hobbyists, and students. The pages describe the project as open-source and community-run but do not specify a free plan, trial, editions, or seat-based or usage-based packaging.