Productivity

Spaced-repetition flashcards with a massive shared-deck ecosystem — the memorization tool everything else copies.

The ebook library manager — conversion between every format, device sync, and metadata editing in one sprawling app.

Parametric 3D CAD for real engineering work — the serious open-source Fusion 360/AutoCAD alternative, post-1.0.

Double-entry personal and small-business accounting — the serious Quicken/QuickBooks-desktop alternative.

Friendly personal finance tracking — simpler than GnuCash, aimed at budgets and spending analysis rather than accounting.

KDE's advanced text editor — the natural Notepad++ replacement with LSP support, sessions, and split views.

The default full office suite on Linux — genuinely good for documents and spreadsheets, with imperfect Microsoft file fidelity.

KDE's universal document viewer — PDF annotation, form filling, and signing without Adobe Acrobat Reader.

Office suite with the best .docx/.xlsx fidelity on Linux — an interface Word users recognize immediately.

Merge, split, rotate, and reorder PDF pages with drag and drop — the small tool that replaces most of Acrobat Pro's daily…

Polished GTK task manager with native Todoist sync — the nicest-looking to-do app on the Linux desktop.

Remote desktop client for RDP, VNC, and SSH in one — how you reach Windows machines from Linux.