Free Mac apps,
made in Saigon.

Sets your wallpaper to NASA's Astronomy Picture of the Day, the latest whole-Earth satellite picture, a star chart drawn for where you are, or a solid colour.

Internet: To fetch NASA's picture and the satellite images

A word of the day in the menu bar, coloured by tone. Say it and see your pitch against the tone, practise with cards and tone drills, and keep a phrase sheet handy.

Slide along an edge of the trackpad to change the volume, the screen or keyboard brightness, or scrub what's playing. Tap then slide for a second action.

An alternative to VolumePad.

Hold ⌘ and a panel lists the front app's keyboard shortcuts, including Google Docs, Sheets, Slides and Gmail in your browser. Type to filter, and find hotkeys that clash.

An alternative to CheatSheet.

Connect to nearby TVs as a mirror, an extra screen or a window, drag the TV around an arrangement map, pick a resolution, and remember each room.

Choose which apps' icons to tuck away; the arrow (click, hover or a shortcut) shows everything for a moment. Search opens any icon's menu. Needs macOS 27.

An alternative to Bartender.

Plays DSF, DFF, SACD ISOs, Blu-ray audio and hi-res files bit-perfect, with a signal path, EQ and converter, a library for local drives and NAS shares, internet radio and the Internet Archive.

An alternative to Sony's Hi-Res Audio Player.

Internet: Only for radio, MusicBrainz and the Internet Archive

Drag files with a modifier key held to convert them: images, documents, audio and video. Its installer adds the Homebrew tools it uses.

An alternative to Tangerine.

Scans a disk or folder and draws it as rings. Click to go in, drag what you don't need to be deleted, and see the space come back.

An alternative to DaisyDisk.

Capture an area, a window or the whole screen from the menu bar, then mark it up with arrows, shapes, text, highlights and blur.

An alternative to Skitch.

Word, Grid and Deck tabs in one window, saved together in one file.