PostHog leads in popularity with 37,485 stars vs 12,563 stars for Rybbit. The 198% higher star count indicates stronger community adoption. In terms of developer contributions, PostHog has 3,137 forks, indicating strong developer engagement.

Both projects show recent activity, with PostHog last updated 2 hours ago and Rybbit 2 days ago.

Both tools share common technology foundations, being built with JavaScript, CSS, Bash, Typescript, JSX. However, they differ in their additional technology choices: PostHog uses Python, SCSS, Golang, Rust, C, Objective-C, C++ while Rybbit leverages Next.js.

PostHog has been in development longer, starting 7 years ago, compared to Rybbit which began 2 years ago. This 5.0-year head start suggests PostHog may have more mature features and established processes.

Rybbit is licensed under AGPL-3.0, while PostHog's license terms are not publicly specified.

Both tools serve similar use cases in Product Analytics. However, they also have distinct specializations: Rybbit extends into Web Analytics.

PostHog provides self-hosting options for complete data control and customization, while Rybbit may be primarily cloud-based or require different deployment approaches.