Felucca

SLOOP is free, open-source live groovebox firmware for the M-VAVE FM-1, based on Felucca by Leo Kuroshita and Hügelton Instruments. It turns the device into a four-track instrument with three synth tracks and a drum track, ten synthesis engines including six-operator FM with DX7 patch import, live recording, looping, song sections, effects, samples, and a sequencer. Its sequencer supports per-track lengths and divisions, chords, ties, slides, swing, ratchets, parameter locks, micro-timing, fills, and MIDI output. SLOOP supports USB and TRS MIDI, MIDI clock synchronization, class-compliant USB audio recording, and a browser-based editor for sound parameters, sequences, drum kits, samples, projects, backups, and restores. It is distributed under GPL-3.0-only, remains beta software, and can be installed or reverted to the official FM-1 firmware through a browser-based installer.

Termixer is a terminal-based two-deck DJ mixer for Unix, built in Rust with ratatui for live performance with TidalCycles. It controls audio from MPV and SuperCollider and provides deck faders, panning, three-band EQ, low- and high-pass filters, crossfading, cue output, microphone input, and a 4x4 sample-pad grid with sequencing. It can record deck, master, microphone, synthesizer, or pad output to MP3, WAV, FLAC, or OGG, and supports SuperCollider SynthDefs, a built-in sine synthesizer, Vim-style navigation, and JSON import/export for pad and sequence sessions. Installation is available through crates.io, GitHub release archives, or source; MPV and FFmpeg are required for the corresponding playback and recording functions, while SuperCollider is optional for TidalCycles integration.

HoloCubic_AIO is open-source all-in-one firmware for the HoloCubic ESP32 device, developed around the ESP32-Arduino platform. Its modular framework combines applications including weather clocks, a photo album, MJPEG or RGB video playback from a FAT32 TF card, desktop screen sharing, effects animations, a 2048 game, Bilibili follower information, anniversaries, heartbeat messaging over MQTT, stock quotes, and web-based configuration. The firmware provides a web server for Wi-Fi setup, system and application settings, self-starting application selection, and wireless file management or uploads to the TF card. It also supports an access-point setup mode, browser access through a local IP address or the `holocubic` hostname, and a companion open-source desktop tool for firmware flashing and media conversion. The repository contains the firmware source and documents ESP32-Pico Arduino and PlatformIO build requirements, MPU6050 startup calibration, TF-card dependencies, and application-specific network or file requirements.

MusicFree is a plugin-based, customizable, ad-free music player for Android and HarmonyOS. It does not include built-in music sources; plugins provide searching for music, albums, and artists, playback, album and artist views, single and playlist imports, and lyrics retrieval. The player handles functions such as pagination and caching while plugins implement the source-specific input and output logic. MusicFree stores data locally and supports light and dark themes, custom backgrounds, and associating lyrics between songs. Plugins are CommonJS modules that can be installed locally or from the network, including JavaScript files and JSON descriptions. The project is open source under the AGPL-3.0 license and warns that third-party plugins may contain security or copyright-related risks.

fx is an open-source coding-agent harness and command-line interface written in Zig by Vercel Labs. It is designed as a compact Unix-like alternative to a terminal IDE, with interactive and one-shot requests for inspecting and modifying repository code, running shell commands, and saving or resuming sessions. The agent supports skills, MCP tools, plugins, subagents, permission rules, and headless requests, and can be embedded natively or through WebAssembly. It is model-agnostic, supports local and cloud inference, is distributed under the Apache-2.0 license, and is marked experimental by its repository.