PosthasteDownload

Get it out of your head in two seconds.

Posthaste lives on your keyboard. A shortcut opens it over any app, Enter saves, and you're back where you were. Try it here: the box is ready.

  1. This is a demo: nothing here is stored or sent. In the app, a shortcut opens this window from anywhere and Enter writes the note to a file on your computer.

Later, see what's left.

Another shortcut opens a small window with today's notes and the unfinished ones from before. X ticks one off. Esc puts it away and you're back again.

1 of 3 done

Everything else waits in the inbox, one more shortcut away. Search finds a note by any word in it. A deleted note waits 24 hours in the trash, so Undo always works.

Today1 of 3 done1 of 3

Carried over

  • Reply to the landlord about the heater
  • Idea: sticker sheet for the zine

Today

  • Return the library books

Every move is a key.

No menus to dig through. The mouse works too, but the keyboard is faster once your hands know the way. Every global shortcut can be changed in Settings, and ? lists them all inside the app.

From any app

Write a note
⌘⇧Space
See today
⌘⌃G
Open the inbox
⌘⌃N

While writing

Save and close
Enter
New line
ShiftEnter
Save, write another
⌘Enter
Close, keep the draft
esc
Polish with AI, if on
⌘I

In the inbox

Move
JK
Edit
E
Done
X
Archive
A
Search
/
Every shortcut
?

Your colors, on all of it.

Pick a look and this page changes the way the app does: colors, corners, even the shape of the letters.

Or make your own

Four colors. If the text would be hard to read, Posthaste says why and won't save it.

Return the library booksSave

Readable. The app would save this.

Share it as one line

On your computer, not ours.

Stays on your computer

  • Your notes, drafts and looks, in one file. Export and backup make copies you keep.
  • No account. No analytics. No telemetry.
  • The app's logs never include what you wrote.
  • A note is saved before the window closes, and a half-typed draft survives a crash.

Leaves only when

  • You press Polish. AI polish is off until you pick a provider (Anthropic, OpenAI or Gemini) and paste your own API key. Then the one note you polish goes straight to that provider. Nothing else does.
  • The app checks for an update. At launch and every six hours it asks GitHub whether a newer version exists. Installing one is your click.

Free, and open source.

MIT licensed. Version 0.2.2. All files and release notes

Used every day on macOS and tested on Linux. The Windows installer is built automatically but hasn't been tried on a Windows PC yet, so expect rough edges. On an Intel Mac, build it yourself for now.

Comfortable with a terminal? Build it yourself
git clone https://github.com/worty76/Posthaste
cd Posthaste
npm install
npm run tauri build

Needs Node 20+, Rust and the Tauri system packages. The README lists them.