In development

macOSWindows

The file manager
you can extend.

For Windows and macOS, keyboard-first,
and built for developers too.

Confirm by email, and we write when the beta opens.

Ostio on Windows: the Home tab with folders to continue, drives with free space, and recent files.
  • New tab
  • Open in the other pane
  • Run any command
  • Quick Look
  • Go to folder
  • Rename in place
  • See inside every subfolder
  • Undo a whole move

✦   ai assistant

Say what you want. Blob will do it.

Coming after the beta launch

Tell Blob what you need in plain words, like “tag March’s invoices Work”. It uses the app’s own commands, shows you the files, and changes nothing until you press the button.

  • thinking
  • found it
  • waiting for your OK

open with ✦ next to Details

Blob's chat panel in Ostio on Windows: it found 4 invoices from March and waits for the OK to tag them Work.

extensions

Every part of it can be extended.

Git and Terminal are built as extensions, and yours plug into the same places: sidebar sections, toolbar items, columns, panels and previews.

Install and build your own after the beta launch

Ostio on Windows in a Git repository, with the Changes sidebar, the branch chip, a Git status column, the Terminal panel and a rendered Markdown preview.
01
02
03
04
05
  1. 01sidebar sectionsChanges, from Git
  2. 02toolbar itemsthe branch chip
  3. 03columnsGit status on every row
  4. 04panelsTerminal
  5. 05previewsrendered Markdown

command palette

Every action has a name.

One key opens it, typing narrows it, and the shortcut is shown beside every row so you stop needing it. Extensions add their commands to the same list.

Ctrl+Shift+PF1

An animation of the command palette: typing a few letters narrows the app's commands, and Enter runs the highlighted one.

walkthrough

One task, start to finish.

Find a file, look at it, change your mind. Five keys, and most of them already work in File Explorer.

Step 1: Open a tab for the job. A new tab starts on Home, next to the ones you have.

copy path

Paths, the way
you paste them.

Right-click any file and copy its full path. Select several and you get one path per line, ready for PowerShell, your editor or a chat.

Copy Path · right-click or Ctrl+Shift+C

and more

Much more, waiting for you.

A few of the things you’ll find as you go.

  • Tags
  • Four layouts
  • All files in subfolders
  • Saved searches
  • Reopen closed tabs
  • Show hidden items
  • Folders first
  • Pin to sidebar
  • Group by
  • Invert selection
  • Every copy in one place
  • Zips as folders
  • Compress and extract
  • Compare folders
  • Disk usage
  • Free up cloud space
  • Symbolic and hard links
  • New empty file
  • Open in a new window
  • File properties
  • Network drives
  • Eject
  • Restore deleted files
  • Light and dark
  • Settings as a file
  • Open in your editor
  • Open in Terminal
  • Open with any app
  • Rotate images
  • Set as wallpaper

Get in early.

The first builds go to the list, in order.