Default
Quiet confidence
Soft gradients, warm paper tones, and a composed assistant presence for focused engineering work.
Local-first desktop AI
AI companion for your workspace, with memory and agents.
Cometline combines a warm, cinematic desktop surface with a serious local runtime: streaming reasoning, visible tools, durable memory, and workspace-aware sessions for long-form technical work.
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Calm default persona
Polished, focused, and workspace-native.
Switch the persona
Change the persona, keep the identity.
Not a disposable web tab. A desktop instrument for developers who want atmosphere, clarity, and control in the same place.
Personas
One product surface, multiple moods.
Cometline can present different character styles while keeping the experience elegant and cohesive. The app icons already hint at that flexibility.
Alternative
Character can evolve
The assistant can feel more personal or more theatrical while the system remains grounded in the same runtime and interface model.
Features
Designed like a premium app, not a generic dashboard.
The interface stays airy and readable while exposing the things that matter when you are doing serious work with an agent.
Elegant composer
Beautiful input, without losing precision
The composer feels soft and editorial, but it is still built for slash commands, tools, and long-running technical conversations.
Forking sessions
Explore alternatives without losing your thread
Branch a conversation into a different direction when you want to compare ideas, try another model, or split implementation paths.
Grouped by workspace
Context stays attached to the project
Sessions are organized around the codebase you are actually working in, so the assistant remains grounded instead of floating free.
Workflow
Three layers, one coherent experience.
Cometline
The desktop shell handles the atmosphere, UI, settings, and native feel.
CometMind
The local runtime manages sessions, tools, persistence, memory, and streaming.
Comet SDK
The provider layer normalizes model I/O and keeps vendor integrations coherent.
Cometline treats AI like software craft: something you inhabit, shape, and trust over time.
Download
Install the latest macOS build.
The download buttons resolve to the newest DMG published on GitHub Releases, with a graceful fallback to the releases page if the API is unavailable.