Software that opens fast,
works offline, and stays yours

Rustini makes desktop tools for people who write, code, and ship. Native apps that launch instantly, cost a one-time fee, and never phone home. No subscriptions. No accounts. No telemetry.

Available now

Markini

A markdown editor for notes, math, slides, and code. 100+ features, 10+ export formats, opens in under a second.

Markini — ~/docs
1
 |
Ln 1, Col 1 0 words

Live preview

Three view modes. See your markdown rendered as you type.

LaTeX math

MathJax 4 with 33 TeX packages. Equations rendered inline.

Diagrams

Mermaid diagrams — flowcharts, sequences, Gantt, and more.

Presentations

Split with ---, press F5. Speaker notes, timer, laser pointer.

Exports

PDF, HTML, DOCX, PNG, EPUB, LaTeX, and more via Pandoc.

Wikilinks

[[Link]] files together. Backlinks, outline, full-text search.

See all features Download Now $10 once — lifetime license

Coming next

Same principles, more tools. Each one is a native app you buy once and own forever.

Restini

API client. Test endpoints, save collections, no cloud sync required.

Gittini

Git GUI. Visual branches, staging, diffs — without the terminal.

Diffini

Visual diff tool. Compare files and folders side by side.

Every Rustini tool

Opens instantly
Launches in under a second. No splash screen, no loading bar.
Works offline
Everything runs locally. No account needed, no internet required.
One-time purchase
Pay once, own it forever. All future updates included. Free trial first.
Your data stays yours
No telemetry, no analytics, no tracking. Files stay on your machine.
Windows, macOS, Linux
Same app, same features, same license on every platform.