Carbon: GTD and Time Tracking

Carbon brings your tasks, projects, notes and time tracking together in one place. Capture ideas, plan your day and keep track of what comes next, from everyday errands to complex projects.

Start offline with no account required. Keep your data on your device, connect to a hosted workspace or sync through your own server.

CAPTURE IDEAS BEFORE THEY SLIP AWAY
• Add tasks quickly to your Inbox.
• Use inline tags and priorities to organize as you type.
• Keep notes, images and attachments alongside your tasks.
• Create notebooks for reference material, ideas and recipes.

TURN PROJECTS INTO CLEAR NEXT STEPS
• Organize work with projects, folders and nested subtasks.
• Choose sequential or parallel projects to match how you work.
• Set dependencies so the right next action is ready when you are.
• Use tags, flags and priorities to keep important tasks easy to find.
• Focus on any project or task to work through its contents.

PLAN A DAY THAT FITS
• See what needs attention in Today and look ahead with Forecast.
• Build a daily plan using task estimates and a time budget.
• Set due dates, defer tasks until later and schedule recurring routines.
• Create saved views with filters and sorting that suit your workflow.
• Review projects regularly to keep them moving.

KEEP NOTES CONNECTED TO YOUR WORK
• Write rich notes with Markdown and inline images.
• Organize notes inside projects or dedicated notebooks.
• Convert a note into a task, or a task into a note.
• Save recipes and adjust serving sizes.
• Export notes as Markdown with their images.

REMEMBER WHAT MATTERS
• Schedule local reminders that work without a sync server.
• Receive push reminders when connected to a configured server.
• Use location reminders while the app is open.
• Connect Home Assistant for location-based automations.

UNDERSTAND WHERE YOUR TIME GOES
• Track time on projects and individual tasks.
• Pause and resume as your day changes.
• Add timestamped notes while you work.
• Edit, split or merge time entries afterwards.
• Review your time in lists, timelines and charts, and export CSV reports.

WORK TOGETHER WHEN YOU NEED TO
Connect to a Carbon server to sync across devices, share projects or individual tasks, assign work and discuss details in comments.

Optional server-connected features include AI assistants, natural-language commands, CalDAV calendar integration, Telegram and APIs for your own automations. These features require a compatible server and may need additional setup.

MAKE CARBON YOUR OWN
Choose a Simple, Standard or Advanced interface, then adjust which features appear. Personalize your workspace with themes, light and dark modes, and configurable gestures.

STAY IN CONTROL OF YOUR DATA
Carbon is open source and works offline. No account is needed for local use. Export and back up your data, restore recently deleted items and choose whether to enable sync.

From a simple to-do list to a detailed project workflow, Carbon gives you room to organize your way.