MELLON · CARBON
Carbon is MELLON's family of apps for text and tables. Open, edit and save Word, Excel and PowerPoint files on your Mac. Everything stays on your computer.
Free test versions · macOS 11 or later · Apple silicon & Intel
The Carbon series, one app at a time.
Spreadsheets
Create, edit and save Excel (.xlsx) and CSV files, with formulas, charts, conditional formatting, data validation, sorting, filters and printing.
Presentations
Create, edit, present and save PowerPoint (.pptx) presentations. For people who use PowerPoint today.
Documents
Create, edit, print and save Word (.docx) documents, with styles, fonts, lists, tables, pictures, links and page setup.
Three apps for the files you already use every day.
Formulas, charts, conditional formatting, data validation, sorting, filters and frozen panes, in .xlsx and CSV files.
Styles, fonts, lists, tables, pictures, links and page setup, in .docx files.
Shapes, pictures, tables, charts, themes, transitions and entrance animations, in .pptx files.
Draw charts from your data in Tabular and Slides, and insert tables in Writer and Slides.
Present full screen from the first or the current slide, with speaker notes.
Print documents and spreadsheets, and export slides to PDF or PNG.
If an app quits unexpectedly, your unsaved work can be restored when you reopen it.
Open and save .xlsx, .docx and .pptx files, so you can share them with people who use Office.
Private by design
Your files are opened and saved on your own computer and are never uploaded.
Works offline
No account and no internet connection needed to use the apps.
Three languages
Interface in English, 繁體中文 and 简体中文, with Chinese text handled properly.
A spreadsheet with a chart, a report, and a slide deck.
The Carbon apps are in free testing. Download them, try them on your own files, and tell us what to improve.
Easier with Element Hub
Element Hub is one launcher for all MELLON software. It shows which apps you have, and offers Download, Open or Update.
Open the downloaded .dmg and drag the app into Applications.
Control-click the app, choose Open, then click Open again.
If macOS still blocks it, go to System Settings → Privacy & Security and click Open Anyway.
Test versions are not yet notarised by Apple, which is why macOS asks you to confirm. You only need to do this once for each app.
Requirements
No. Carbon apps run on your computer and process files locally. They do not send your files to a server.
Yes. They are free to download and use while we test. Feedback is welcome at hello@mellongp.com.
The apps read and write the standard .docx, .xlsx and .pptx formats. A few things, such as headers, footers, footnotes and comments in existing Word files, are not kept yet, so the app asks before overwriting such a file.
The Mac versions come first. Windows is planned after the first test versions.
Carbon Hub has been replaced by Element Hub, which manages all MELLON software, not just Carbon.
