12 Best Open Source Communities
as of September 2026 · Open source contributors, maintainers, project communities, and software collaboration.
Python Software Foundation
Python ecosystem community discussing open source projects and foundation news.
r/golang
Go programming community with 265k+ members discussing open source projects.
r/rust
Rust community with 285k+ members focused on open source development.
Open Source Design
Design-focused Discord for open source UX/UI collaboration.
Linux Foundation Community
Linux Foundation Slack for open source infrastructure contributors.
CNCF Community
CNCF Slack for cloud-native open source developers and operators.
r/github
GitHub-focused community with 95k+ members discussing repositories and workflows.
Open Source Initiative
Official OSI Telegram channel for licensing and open source standards.
r/selfhosted
Community of 380k+ exploring self-hosted open source applications.
r/opensource
Large Reddit community for open source discussions, projects, and contribution guidance.
Open Source Community
Discord community with 28k+ members sharing open source projects and contributions.
Open Source Software Community
Professional Slack workspace for open source developers with organized channels.