open source

Three open-source tools are available today.

Sweetgrass plans the work, Lantern runs local agents, and Marsh verifies changes through self-hosted CI. Each is available from its public repository.

Sw

Sweetgrass

Plan

A visual project command center for boards, dashboards, agent queues, GitOps actions, memory context, and PR status.

npm install -g sweetgrass
Open repo
La

Lantern

Run

A local runtime for repeatable coding-agent sessions across worktrees, terminal panes, and audit state.

install Lantern from GitHub, then run lantern doctor
Open repo
Ma

Marsh

Verify

A self-hosted GitHub Actions runner stack for validating agent-authored changes on your own infrastructure.

git clone <marsh-repo-url>
Open repo

commercial status

Quill is coming soon.

Quill will be Membl’s commercial personal-search product. Pricing is not published yet, but the product preview explains the problem it solves and the private preview we are preparing.

Preview Quill