Daijiro Wachi☔

Gridpark is a free, open-source desktop spreadsheet that reads and writes real .xlsx 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.

niltimer pairs a Pomodoro timer, Kanban board, and live friends timeline, all in one tab. Add your tasks, hit Start, and work for 25 minutes. When the session ends, drag the task to Done, your friends see it happen in real time. The timer keeps ticking even if you switch tabs, refresh, or swap devices. Your streak grows with every session you complete. Solo productivity tools are everywhere. niltimer adds the one thing they all leave out: someone who knows you're working.