Going Indie - A complete guide to becoming an indie software developer
Indie Hackers - Connect with fellow entrepreneurs, developers, and bootstrappers who are sharing the strategies and revenue numbers behind their companies.
Hive Index - Discover online communities, across all platforms, for any topic.
Geneva - An all-in-one communication app for groups & communities
IntenseDebate - IntenseDebate's comment system enhances and encourages conversation on your blog or website.
Figma Community - Publish live design files for others to learn from & remix.