Default
Quiet confidence
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 calm desktop surface with a serious local runtime: streaming reasoning, visible tools, durable memory, and workspace-aware sessions for long-form technical work.
A native macOS app that keeps your code, models, and memory local. The interface stays out of the way so you can focus on long-form technical work.
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.
Capabilities
A local agent runtime built for long-form technical work.
Beyond the surface polish, Cometline ships memory, delegation, skills, and provider flexibility — all running on your machine with workspace-scoped boundaries.
Semantic memory
Context that compounds across sessions
Relevant memories are retrieved before each turn and new facts are captured automatically — scoped to the workspace so preferences and decisions stay attached to the project they belong to.
Agent delegation
Hand off coding work to specialized agents
Delegate complex refactors and implementation tasks to OpenCode via ACP, with progress streamed back into your chat so you stay in the loop without leaving the desktop.
Agent Skills
Slash commands that scale with your workflow
Invoke reusable prompt templates with commands like /tdd and
/create-skill, plus custom skills discovered from your workspace and
global skill directories.
Multi-provider
Your models, your rules
Switch between Anthropic, OpenAI, OpenAI-compatible APIs, OpenCode Go, and ChatGPT Codex. Configure providers, API keys, and default model roles from Settings.
MCP tools
Extend the toolkit with external servers
Connect Model Context Protocol servers to expose additional tools to the main agent — bring in databases, APIs, and custom integrations without forking the runtime.
Discord bot
Same brain, a different channel
Run CometMind as a Discord bot with per-thread sessions, persistent memory, @mention gating, and the same skill invocation you use in the desktop app.
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.