Hello,
I’m currently migrating from macOS to Linux and there was a lack of applications to open the tsv format DEVONthink creates, so I wrote one myself. You can open DT sheets or create new ones, change the column configuration, fix invalid cell values (which DT creates), sort with clicking on the column header etc. The application supports german and english, feels at home in a Gnome environment and will support your locale configuration for data input, but stores ISO values into the file.
You can see screenshots here Tabelleneditor für Linux mit konfigurierbaren Spalten • Tap to Play! and download the current version. This page will be updated whenever I update the application.
It’s a single python file generating the ui with GTK. install.sh tries to check/install the four dependencies and registers the application into the Gnome DE.
Some warnings: I wrote this application just for myself and because I like what DEVONthink does with sheets. It’s completely vibe coded with Claude and only tested on a single machine, running Ubuntu with Gnome. I tested it with several files and everything works fine – for me. So consider this an alpha version, proceed with caution, it might delete stuff on your system and don’t held me responsible if it does. The installer registers the application in the Gnome Launcher and requires apt. This means, the installer will fail on other distributions with other package managers, but you can just add the four dependencies manually. I also don’t know how the application behaves when running under other DE like KDE. It might work. Also, obviously, there’s no support: I just wrote this for me because I needed it.