In Development

Lastbrowser is coming.

The AI-native browser with Sidekick in the sidebar. We're working on it.

In the meantime
Sidekick WebUI · Nova Assistant · Open Source

Sidekick is the interface. Nova is the intelligence.

Sidekick brings the AI workspace directly into the browser: chat, spaces, skills, memory, tools and multi-agent workflows. Nova is the assistant persona working inside it.

View Sidekick on GitHub GitHub Repo
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How Sidekick fits Lastbrowser

Lastbrowser is the Windows browser. Sidekick is the sidebar workspace. Nova is the AI inside it. Together they turn browsing into guided work.

Chat

Chat

Nova answers beside the page and keeps your workflow in context.

Spaces

Spaces

Project contexts stay separated, with Nova as the clean default space for new installs.

Skills

Skills

Reusable workflows for research, writing, analysis, automation and coding.

Source & license

Sidekick is source-available and free for non-commercial use. Commercial use requires a contract.

Non-commercial free

0 €

Private, learning, research, hobby and non-commercial projects can use Sidekick freely.