Take it and try it.
Start with nothing to install at all, then take a binary, then take the whole engine. Each step below is exactly as available as it says.
Nothing to install — open a document now
The real editor, in your browser, on real published files: eight demo cabins are open right now. Your edits live inside the cabin and are not saved anywhere.
Open a document in the browser →A working draft with comments and tracked changes. Measured on the live node on 5 September: a plain brief appears in one to three seconds, a 24-page draft with tracked changes in three to four. The 32-page illustrated annual reports on the front page take longer still. The number here is what we measure, not what we hope.
One binary — turn a DOCX into a page
sumdoc renders any Word file into a self-contained HTML page that opens with a double-click: offline, view-only, and honest about anything it didn't draw.
curl -LO https://sumoffice.com/dl/sumdoc && chmod +x sumdoc
./sumdoc render report.docx -o report.htmlmacOS, Apple silicon · 144 MB · sha256 · Linux and Windows builds are next
The mobile apps
SumDoc and SumSheet for iPhone and iPad are live: SumDoc on the App Store · SumSheet on the App Store. For Android: SumDoc on Google Play · SumSheet on Google Play. The macOS apps are in App Store review.
The desktop apps — Linux, macOS, Windows
Straight from the release pipeline, signed, with checksums. The buttons below always point at the latest published version; the version number and file size are read live from latest.json, so what you see is what you get.
SumSheet — loading…
Checksums and the signing key are next to every version: SHA256SUMS.
SumDoc — loading…
Signed and notarized builds under the SumDoc name — from the same release pipeline as SumSheet.
Checksums and the signing key are next to every version: SHA256SUMS.
Verify what you install
Builds are code-signed by Health Informatic Security System, S.L. Check the signature in the installer's properties before running — if it doesn't name us, it isn't ours.