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Gridpark is a free, open-source desktop spreadsheet that reads and writes realxlsx files, reasonably compatible with Excel. Powered by HyperFormula's 400+ formula functions. A full styling toolbar covers fonts, colors, borders, number formats, and cell merge. The twist: you can draw directly on your spreadsheet. Pen, highlighter, spray can, eraser, annotate your data like it's a wall. Dark/light themes, Japanese + English UI, sort, filter, freeze rows, undo/redo, autosave.
I built Gridpark because I kept wondering: why does working with spreadsheets feel so joyless?
Excel is powerful, but it's never fun. So I started experimenting what if a spreadsheet felt more like a sketchbook? What if you could draw on your data, not just fill cells?
That's Gridpark. It reads and writes real .xlsx files, so nothing you make is locked in. HyperFormula handles 400+ Excel-compatible formulas under the hood. And yes, there's a spray can tool.
A few things I'm proud of: - Draw tab: pen, highlighter, spray, eraser, layered on top of the grid - Full .xlsx compatibility: open it in Excel after, it just works - Japanese + English UI: I'm Japanese, so this mattered to me personally
It's experimental. Some edges are rough. But I wanted to ship something real and see what resonates.
Would love to know: what would make a spreadsheet actually fun for you? Drop it below I'm reading everything.
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About Gridpark — Make Excel playgrounds on Product Hunt
“The spreadsheet you can draw graffiti on”
Gridpark — Make Excel playgrounds was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #142 on the daily leaderboard. Gridpark is a free, open-source desktop spreadsheet that reads and writes realxlsx files, reasonably compatible with Excel. Powered by HyperFormula's 400+ formula functions. A full styling toolbar covers fonts, colors, borders, number formats, and cell merge. The twist: you can draw directly on your spreadsheet. Pen, highlighter, spray can, eraser, annotate your data like it's a wall. Dark/light themes, Japanese + English UI, sort, filter, freeze rows, undo/redo, autosave.
Gridpark — Make Excel playgrounds was featured in Design Tools (260.4k followers), Open Source (68.5k followers), Spreadsheets (9.9k followers) and GitHub (41.2k followers) on Product Hunt. Together, these topics include over 73.3k products, making this a competitive space to launch in.
Who hunted Gridpark — Make Excel playgrounds?
Gridpark — Make Excel playgrounds was hunted by Daijiro Wachi☔. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Daijiro Wachi☔
Hey Product Hunt 👋
I built Gridpark because I kept wondering: why does working with spreadsheets feel so joyless?
Excel is powerful, but it's never fun. So I started experimenting what if a spreadsheet felt more like a sketchbook? What if you could draw on your data, not just fill cells?
That's Gridpark. It reads and writes real .xlsx files, so nothing you make is locked in. HyperFormula handles 400+ Excel-compatible formulas under the hood. And yes, there's a spray can tool.
A few things I'm proud of:
- Draw tab: pen, highlighter, spray, eraser, layered on top of the grid
- Full .xlsx compatibility: open it in Excel after, it just works
- Japanese + English UI: I'm Japanese, so this mattered to me personally
It's experimental. Some edges are rough. But I wanted to ship something real and see what resonates.
Would love to know: what would make a spreadsheet actually fun for you? Drop it below I'm reading everything.