What is the main difference between Roundcube and Thunderbird?

Roundcube and Thunderbird are both email clients but differ in their approach, features, and target audience. Compare their GitHub stats, technology stack, and community adoption to make the best choice.

Which is better: Roundcube or Thunderbird?

The choice between Roundcube and Thunderbird depends on your specific needs, technical requirements, and team preferences. Both are quality open source solutions with active communities.

Can I migrate from Roundcube to Thunderbird?

Migration between Roundcube and Thunderbird is possible but requires careful planning. Consider data export/import capabilities, feature parity, and potential workflow changes.

Stellar Hosted – Managed Open Source software hosting in the EU: secure, compliant, fast.

Learn more

Roundcube vs Thunderbird

Learn how Roundcube and Thunderbird differ in their key features, development activity, technology stack and community adoption, so you can decide which of these email clients is best for you.

Roundcube

PHP-based webmail client with MIME support, address book, folder management, threaded views, PGP encryption, and a plugin API for self-hosted email.

Visit Roundcube Read more

7,242stars+16(+0.2%)

Last 30 days

Last commit
1 day ago
Repository age
14 years
Version
1.7.5
License
GPL-3.0
Self-hosted
Yes
Repository
roundcubemail

Thunderbird

Desktop email client that combines multiple accounts, calendars and contacts in one app, with a unified inbox, tagging, and no ads or data collection.

Visit Thunderbird Read more

216stars+50(+30%)

Last 30 days

Last commit
1 day ago
Repository age
1 year
License
MPL-2.0
Repository
thunderbird-desktop

Detailed Comparison

Roundcube appears to have several advantages over Thunderbird, particularly in popularity, maturity and features. Consider your specific needs regarding popularity, growth, activity, maturity, licensing and features when making your decision.

Roundcube wins

Community & Popularity

Roundcube significantly outpaces Thunderbird in community adoption with 7,242 stars compared to 216 stars on GitHub. This 33.5x difference suggests Roundcube has a much larger and more active community. In terms of developer contributions, Roundcube has 1,803 forks, indicating strong developer engagement.

Thunderbird wins

Growth Momentum

Thunderbird is growing faster, adding 50 stars in the last 30 days (+30%) against adding 16 stars for Roundcube (+0.2%). Thunderbird is the smaller project of the two, so it is closing the gap rather than extending a lead.

Comparable

Development Activity

Both projects show recent activity, with Roundcube last updated 1 day ago and Thunderbird 1 day ago.

Roundcube wins

Project Maturity

Roundcube has been in development longer, starting 14 years ago, compared to Thunderbird which began 1 year ago. This 13.7-year head start suggests Roundcube may have more mature features and established processes.

Comparable

Licensing

The projects use different licenses: Roundcube is licensed under GPL-3.0 while Thunderbird uses MPL-2.0. Consider the licensing requirements when choosing for your project.

Comparable

Use Cases & Features

Both tools serve similar use cases in Email Clients.

Roundcube wins

Hosting & Deployment

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