Joplin significantly outpaces Zen in community adoption with 55,779 stars compared to 1,129 stars on GitHub. This 49.4x difference suggests Joplin has a much larger and more active community. In terms of developer contributions, Joplin has 6,201 forks, indicating strong developer engagement.

Joplin shows more recent development activity with its last commit 8 hours ago, while Zen was last updated 3 months ago. This suggests Joplin is being more actively maintained.

Both tools share common technology foundations, being built with JavaScript, CSS, JSX. However, they differ in their additional technology choices: Joplin uses Bash, Typescript, Python, SCSS, Rust, C, Objective-C, Java, Swift, C++, Ruby, Kotlin, MATLAB while Zen leverages Golang.

Joplin has been in development longer, starting 10 years ago, compared to Zen which began 1 year ago. This 8.2-year head start suggests Joplin may have more mature features and established processes.

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

Both tools serve similar use cases in Note-Taking. However, they also have distinct specializations: Joplin also focuses on Personal Knowledge Management (PKM), Secure & Encrypted Notes.

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