Blog
Notes from building VisiGrid. Engineering decisions, releases, and the things a native spreadsheet engine turns out to be good for.
- Oct 14, 2026A 140,000-row spreadsheet, ready to type in half the time of Google SheetsVisiGrid is ready to type into a 140,000-row sheet in 1.09 s, against Google Sheets at 2.16 s, and the screen settles in 0.67 s against 7.21 s. How we measured it off the screen at 60 fps, every change that got us there, the ones that did nothing, and two bugs the benchmark found that our tests had missed.
- Oct 8, 2026We tested Google Sheets and Excel Online. Their APIs silently overwrote our data.When a program writes a spreadsheet cell based on a stale read, the Google Sheets and Excel Online APIs accept it and the newer edit disappears with no error. We tested it, explain why it happens, and give a reproduction you can run.
- Sep 6, 2026A spreadsheet that drops down from the top of the screenWe replaced the desktop calculator with a persistent scratch spreadsheet for Omarchy. It took a weekend, because the VisiGrid engine already ran headless. Here is how it works and what it taught us.