Free Forever
Spex Opus
A desktop writing app built for focus. Organize your novels, screenplays, and stories in a clean, native environment that respects your craft — and your privacy.
Available for macOS, Windows, and Linux
Built for the Way You Write
Every feature exists because a writer needed it. Nothing more, nothing less.
Focused Editor
A clean, distraction-free writing surface with typewriter mode, custom caret, and a layout that keeps you in flow.
Series & Book Management
Organize your work into series, books, and chapters with a collapsible sidebar that mirrors your creative structure.
Desktop Native Performance
Built for native speed. Launches fast, runs lean, and works offline. Your manuscripts never leave your machine.
Rich Text Formatting
Bold, italic, headings, and horizontal rules — everything you need, nothing you don't. Powered by a modern editing engine.
Multiple Workspaces
Separate your projects into distinct workspaces. Switch between them instantly without losing your place.
Community Driven
Free forever, shaped by writer feedback. No venture capital, no ads, no data harvesting. Just software that serves its users.
Just. Write.
Spex Opus is free to download and use. No account required, no strings attached.