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Utilities for radio and broadcast engineers, built and tested in real control rooms. No account. No trial. Air is always free.

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Every download comes from the official GitHub release, with a SHA-256 checksum.

Hi, I'm Jack, the virtual head mechanic.

On the wire

The virtual garage boss

Hi, I'm Jack

I'm the virtual head mechanic: I greet whoever walks in and keep the garage in order. The chat covers the most common questions; for an idea or a problem, write to me: I listen.

Write to Jack

Today's special

All tools

  • BAY 1 · Monitoring

    G-Downloader

    Scheduled downloads for broadcast, with a dashboard that tells you what arrived and what failed.

    • Windows
    • macOS
    • Linux
    See the tool

  • BAY 2 · Streaming

    FlowCast

    FlowCast assembles, converts and delivers your episodes via FTP on a schedule, without manual work. Built for radio stations and podcast producers who run recurring shows.

    • Windows
    • macOS
    • Linux
    See the tool

  • BAY 3 · Streaming

    DAB+ CU ↔ Bitrate Calculator

    Converts Capacity Units (CU) to bitrate (kbps) and back for DAB+, per ETSI EN 300 401. Supports all EEP-A and EEP-B protection profiles, with an automatic audio quality hint (speech, news, music, hi-fi). Works offline and installs as an app.

    • Web browser
    • Installable PWA
    • Works offline
    See the tool

  • BAY 4 · On-Air

    G-Timer

    A timer for radio shows recorded in blocks. Set a duration for each block, count in with a 3·2·1 pre-roll, measure overruns and let dynamic time recalculate the rest. Built for control rooms and post-production: multi-take recording, jump between blocks in any order, exportable final report.

    • Web browser
    • Installable web app
    • Works offline
    • English · Italian · Spanish
    See the tool

  • BAY 5 · On-Air

    G-Clock

    G-Clock is the classic radio studio clock on your screen: a 60-minute dial that fills as the hour goes by and counts down to your next stopset and to the fixed events of your day (news at 18:00, an ad block at 18:20), with headlines and weather beside it. One key turns it into a recording timer, with free times or programs made of blocks, a 3·2·1 pre-roll and a report at the end. An optional MicTime timer, off by default, times a speech from a MIDI message, a key or an audio level.

    • Windows
    • macOS
    • Linux
    See the tool

  • BAY 6 · Loudness

    Loudness Target Calculator

    Enter the integrated loudness of a file, pick a target standard and read the gain to apply, the resulting loudness and true peak, and a warning if the gain would push the true peak over the limit. No meter at hand? Load the audio file: it is measured in your browser and never uploaded.

    • Web browser
    • Installable web app
    • Works offline
    • English · Italian · Spanish
    See the tool

  • BAY 7 · Dante & AoIP

    AoIP Bandwidth Planner

    Draw a schematic of your audio network, describe the flows and see how much of each link they use, in each direction, against a safety threshold. Primary and secondary networks and redundant Dante flows are covered. AES67 flows are calculated from documents by the standard's authors (the standard text itself was not read); Dante flows are estimated from Audinate's published figures.

    • Web browser
    • Installable web app
    • Works offline
    • English · Italian · Spanish
    See the tool

  • BAY 8 · Scripts

    File Renamer

    File Renamer renames many audio and video files at once with a pattern such as {date:yyyyMMdd}_{seq:3}_{orig}. You see every new name before anything happens, name clashes are flagged, nothing is ever overwritten, and the last batch can be undone. Find & replace, clean-ups and presets are there when you need them.

    • Windows
    • macOS
    • Linux
    See the tool

  • BAY 9 · Scripts

    Tag Fixer

    Tag Fixer shows the metadata of many MP3, WAV and FLAC files in a spreadsheet-style table. Edit a cell, set one value for all checked rows, fill fields from patterns or rename files from their tags, then save: every file is backed up first and checked after writing, and the last batch can be restored.

    • Windows
    • macOS
    • Linux
    See the tool

  • BAY 10 · AI Skills

    Show Notes Generator

    Paste the transcript or running order of a radio episode and get show notes: a podcast description, website show notes or social posts, in the tone, length and language you choose. You bring your own AI account (Claude, OpenAI, Gemini, Groq, OpenRouter, or a model running on your own computer). No key? Copy the ready-made prompt and paste it into any assistant.

    • Web browser
    • Installable web app
    • Your own AI account or local model
    • English · Italian · Spanish
    See the tool

  • BAY 11 · Monitoring

    Dead Air Watchdog

    Dead Air Watchdog measures the level of each input and, when it stays below your threshold for longer than the time you set, sends an alert naming the input, repeats it if you wish and tells you when the audio is back and how long the silence lasted. It keeps a local log of every event, charts the silences of the last 7, 14 or 30 days and can show everything full screen on an always-on monitor. Every brief drop is also logged as a micro-silence, and the alerts of one input can be paused for maintenance.

    • Windows
    • macOS
    • Linux
    See the tool

  • BAY 12 · On-Air

    Ticker Feed Builder

    Ticker Feed Builder checks your RSS feeds around the clock and, for each profile, writes one headline per line, one description per line and one numbered JPG per story, always in the same order, into the folder your ticker or playout system reads. It downloads and rewrites only what is new, keeps the previous files if a download fails, and alerts you by email or Telegram when a feed breaks or freezes.

    • Windows
    • macOS
    • Linux
    See the tool

  • BAY 13 · On-Air

    MicTime

    MicTime times how long a speech lasts. The first signal starts the count, the next one stops it, the total stays on screen for a few seconds and the timer returns to zero. The signal can be a MIDI message, a key or the level of an audio input. With a time limit, the figures change colour as the limit gets close and when it is passed, and a program of steps gives each speech its own limit.

    • Windows
    • macOS
    • Linux
    See the tool

  • BAY 14 · Monitoring

    Audio Monitor Router

    Audio Monitor Router is a routing matrix for the audio devices of a computer: choose which input you hear, and on which output (headphones, monitors, HDMI, another sound card). Several outputs at once, a volume and a level for each, signal speakers that show who is playing.

    • Windows
    See the tool

  • BAY 15 · AI Skills

    Garage Skills

    A shelf of skills that teach an AI assistant to work like an experienced broadcast engineer on one topic: troubleshooting, standards and calculations, studio and event operations. Each skill lists its sources and what it does not know, and uses tested scripts for the numbers.

    • Claude Skill
    • Universal prompt for ChatGPT, Gemini and others
    See the tool

Most downloaded

  1. Dead Air Watchdog
  2. G-Downloader
  3. FlowCast

Fresh off the lift

All tools
BAY 1 · NEWFREE
G-Downloader

Free scheduled downloader for radio and broadcast workflows: web, FTP and local sources, dynamic filenames, retries and alerts.

  • Windows
  • macOS
  • Linux
BAY 2 · NEWFREE
FlowCast

Automated production and delivery of radio shows: FFmpeg conversion, FTP upload, scheduling, statistics, email and Telegram alerts.

  • Windows
  • macOS
  • Linux
BAY 3 · WEB APPFREE
DAB+ CU ↔ Bitrate Calculator

Two-way Capacity Units ↔ bitrate calculator for DAB+ sub-channels (EEP-A/EEP-B, ETSI EN 300 401).

  • Web browser
  • Installable PWA
  • Works offline
BAY 4 · WEB APPFREE
G-Timer

Block-based recording timer for radio: programs, 3·2·1 pre-roll, overrun tracking, multi-take and exportable reports.

  • Web browser
  • Installable web app
  • Works offline
  • English · Italian · Spanish
BAY 5 · NEWFREE
G-Clock

A studio clock for radio presenters: the classic 60-minute dial with stopsets, news and weather, and a recording timer with programs.

  • Windows
  • macOS
  • Linux
BAY 6 · WEB APPFREE
Loudness Target Calculator

Gain in dB to bring a file to a loudness target (EBU R 128, ATSC A/85, streaming, podcasts), with a true-peak check and file measurement.

  • Web browser
  • Installable web app
  • Works offline
  • English · Italian · Spanish
BAY 7 · WEB APPFREE
AoIP Bandwidth Planner

Plan Dante and AES67 network bandwidth: draw devices, switches and links, add audio flows and see the load on every link.

  • Web browser
  • Installable web app
  • Works offline
  • English · Italian · Spanish
BAY 8 · NEWFREE
File Renamer

Rename audio and video files in batch with date, counter and random patterns, find & replace, presets, a mandatory preview and one-step undo.

  • Windows
  • macOS
  • Linux
BAY 9 · NEWFREE
Tag Fixer

Read and correct audio metadata in batch: ID3 and covers on MP3, BWF bext, iXML and cart on WAV (also RF64), Vorbis comments on FLAC, in an editable table with patterns, find & replace, CSV, automatic backup and restore.

  • Windows
  • macOS
  • Linux
BAY 10 · WEB APPFREE
Show Notes Generator

Turn a radio show transcript or outline into ready-to-publish show notes with the AI provider of your choice.

  • Web browser
  • Installable web app
  • Your own AI account or local model
  • English · Italian · Spanish
BAY 11 · NEWFREE
Dead Air Watchdog

Listens to any number of sound cards and Icecast / Shoutcast streams around the clock and alerts you by email, Telegram and HTTP when the audio stays silent.

  • Windows
  • macOS
  • Linux
BAY 12 · NEWFREE
Ticker Feed Builder

Downloads RSS feeds on a schedule and turns every story into numbered text lines and JPG images for TV tickers and playout graphics.

  • Windows
  • macOS
  • Linux
BAY 13 · NEWFREE
MicTime

A talk timer for live radio and events: a signal starts the count, the next one stops it, the total stays on screen and the timer returns to zero.

  • Windows
  • macOS
  • Linux
BAY 14 · NEWFREE
Audio Monitor Router

Hear any audio input of your computer on any output, from a matrix.

  • Windows
BAY 15 · NEWFREE
Garage Skills

Free AI skills for broadcast and pro audio, for Claude, ChatGPT, Gemini and other assistants.

  • Claude Skill
  • Universal prompt for ChatGPT, Gemini and others
BAY 16 Hood's up Something is on the lift. The mechanic is still tightening the bolts. ON THE LIFT · coming soon
BAY 17 Your idea goes here Request a tool

Pick a bay

How the garage works

  1. Pull in

    Pick a tool and your system. No price tag, no sign-up.

  2. Fill up

    Download your tool: it is free, with no payment and no account. If it helps you, the tip jar is there. Same tools either way.

  3. Drive off

    Downloads come straight from the official GitHub release, with checksums. No account needed.

The workshop

Made in the control room

Every tool in this garage starts as a problem on air. It gets a bay only after it has run in a real studio, and it ships with its source code, a checksum and a changelog.

Built by Graziano Melzi, radio and broadcast engineer.

Jack is the garage's virtual head mechanic: the character who greets whoever arrives. Got an idea for the garage? Tell Jack: he listens.

Say thanks

The tools are free, always. If one saved your day, you can leave a tip. It is optional and changes nothing about what you get.

Open the tip jar

Fresh from the garage

New tools and updates, as they are published.

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