SpinWin

Window Sweaters is a macOS menu-bar app that decorates windows with knitted borders. Its menu-bar controls provide style, pattern, border-width, stitch-size, pause, and quit options; the By App mode assigns hand-picked colourways and custom patterns to supported applications, while Zigzag uses a matching pattern with each app's colour. Applications without a custom sweater receive a consistent colour selected from their name. The app supports macOS 13 or later on Apple Silicon and Intel Macs, is distributed through Homebrew, GitHub releases, or a local build, and requires Accessibility permission to track the focused window. It uses private macOS window APIs, is not yet notarized by Apple, and is released under GPL-3.0.

Lid Plane is a macOS menu bar app that creates a MacBook lid-folding illusion using the laptop's hinge-angle sensor. It captures the built-in display with ScreenCaptureKit, reshapes the captured image with a Metal shader as the lid moves, and blends increasingly blurred copies using Metal Performance Shaders; the blur increases with lid movement and is stronger near the top of the display. The app can use a selected activation angle or a movement-based mode that anchors the effect after motion stops, while the underlying applications remain clickable and retain keyboard focus. It requires macOS 13 or newer, an Apple silicon MacBook, a supported lid-angle sensor, and Screen Recording permission. The effect applies only to the built-in display, pauses during closed-lid or unsupported-display states, and keeps captured frames in memory without saving or transmitting them. It is built with Swift, ScreenCaptureKit, IOKit, and Metal, and is distributed as a downloadable app for Apple silicon. The repository is licensed under GPLv3-or-later from version 0.3.2 onward; version 0.3.1 and earlier remain MIT-licensed.

Mac Duo is a native Swift and Metal macOS app that makes desktop effects follow the position of a MacBook lid. It provides six transitions—Duo, Ghost, Roll, Shutter, Flex, and Iris—that animate the desktop around the hinge, including panel sliding, display curling, bowing, or iris-like closure. The app includes live preview, floating controls, menu-bar access, pause controls, and an option to clear the screen after the lid remains still. It runs locally without third-party runtime dependencies, accounts, analytics, or screen-content uploads; screen frames remain in memory when Screen Recording permission is enabled. It supports macOS 13 Ventura or newer on compatible Apple-silicon MacBooks, with an Intel preview for the 2019 16-inch MacBook Pro, and is distributed under the MIT license.

Screendrop is a native, local-first macOS menu bar application for capturing, annotating, recording, editing, compressing, and sharing screenshots and screen recordings. It captures displays, windows, or selected areas; provides configurable hotkeys and after-capture workflows; and includes a floating preview stack, offline History, non-destructive annotation with redaction and mockup effects, and a recording studio with separate screen, camera, microphone, system-audio, cursor, click, and keystroke data. Recording projects support timeline edits, zooms, reconstructed cursors, camera layouts, captions, transcript-based cuts, social aspect ratios, and reusable style presets. On-device speech recognition provides transcription, karaoke-style captions, filler-word removal, silence trimming, and a notch-native teleprompter. Optional self-hosted sharing uses a Cloudflare Worker, R2, and D1: the Worker authenticates uploads, stores media and metadata, and returns share links for screenshot viewers or Loom-style recording pages with transcripts, comments, playback controls, and scrub previews. Captures, projects, annotation sidecars, and transcripts remain on the Mac unless explicitly uploaded, and there is no central Screendrop account or hosted server. The project is distributed as a DMG or Homebrew cask, requires macOS 26.4 or newer according to its README, and is dedicated to the public domain under CC0 1.0 Universal.

Spun is a source-available music player for Linux that presents album artwork through CD, vinyl, cassette, and TP-7-inspired recorder interfaces. It plays local music and can browse YouTube Music anonymously, connect to Jellyfin, Navidrome, or Subsonic servers, and control Apple Music through a running Cider instance. Its player provides shared playback controls, queues, album details, lyrics, seeking, mini mode, desktop media controls, and optional modeled 3D views with lighting based on Noctalia's wallpaper palette. The application supports local imports without copying or modifying the original music files, separate queues for its supported sources, and an optional TX-6-style mixer for local, YouTube, Jellyfin, or Subsonic audio. YouTube support uses an isolated Python helper based on ytmusicapi and yt-dlp; Cider connectivity uses its local API and handles Apple Music authentication and streaming. The mixer performs EQ, delay, compression, and channel mixing inside Spun, but does not support external USB hardware, recording, MIDI, or separate auxiliary outputs. Spun is built from source with CMake, Ninja, Qt 6.8 or later, and TagLib 2.0 or later; Qt Quick 3D is optional. The repository states that there is no packaged installer yet. Its original code and assets are distributed under the PolyForm Noncommercial License 1.0.0, which is source-available and not OSI-approved.