Zero config. Real time. LAN native. — No cables. No drivers. No reboot. No surprises at showtime.
Config
One INI file. That's all it takes.
Define your virtual MIDI ports, set the direction, choose the network interface.
MIDInet handles the rest — peer discovery, routing, transport. No IP addresses to manage.
The [STARTUP COMMANDS] section
runs console commands automatically at launch — perfect for unattended stage rigs.
No GUI. No preferences window. No menu bar. MIDInet runs entirely from a terminal REPL with command history, live monitoring, and instant peer visibility.
show — device status & peer table
MIDInet — mac14.local
NAME MODE LOOP NETWORK IP STATUS PEERS──────────────────────────────────────────────────────────────────────────────MIDI_SYNCRX OFF auto 192.168.1.10 ✅ okmac13 (TX)MIDI_VIDEOBIDIR ON en0 192.168.1.10 ✅ okmac13 (TX)MIDI_LIGHTTX OFF auto 192.168.1.10 ✅ okmac13 (RX)MIDI_CAMBIDIR OFF auto 192.168.1.10 ✅ okmac13 (TX)──────────────────────────────────────────────────────────────────────────────4 devices · 2 peers · mDNS interval 3sMIDInet >
monitor on — live MIDI stream
MIDInet — mac14.local
MIDInet > monitor on
monitoring enabled[14:32:01.042]RXMIDI_SYNC Note On Ch.1 C4 Vel.64 ←[14:32:01.058]RXMIDI_SYNC Note On Ch.1 E4 Vel.72 ←[14:32:01.126]RXMIDI_SYNC Note On Ch.1 G4 Vel.68 ←[14:32:01.305]TXMIDI_LIGHT CC Ch.1 CC7 Val.100 →[14:32:01.481]RXMIDI_SYNC Note Off Ch.1 C4 Vel.0 ←[14:32:01.499]RXMIDI_SYNC Note Off Ch.1 E4 Vel.0 ←[14:32:01.512]RXMIDI_SYNC Note Off Ch.1 G4 Vel.0 ←[14:32:02.001]TXMIDI_VIDEO PC Ch.16 Prg.4 →MIDInet >
MIDInet is for musicians, engineers, and technicians who run multiple computers in a studio or on stage and need them to speak MIDI to each other — without dedicated interfaces, MIDI-over-USB hubs, or manual network configuration. If you already have a LAN, you already have the cable.
Features
Everything you need. Nothing you don't.
MIDInet is a purpose-built tool. Not a platform, not a framework — a router. Here is exactly what it does.
⟵⟶
Transport
Virtual MIDI over LAN
Virtual MIDI ports that your DAW and applications see as physical hardware. Data travels via UDP multicast on 239.0.100.1:47910. No special driver, no virtual loopback cable.
◉
Discovery
Zero Configuration
Peers discover each other via mDNS-SD (_midinet._udp.local.). Bring a second machine onto the network and it appears automatically. No IP addresses, no address book, no pairing step.
⬡
Routing
Per-NIC Binding
Each virtual port is independently bound to a specific network interface — Ethernet, Wi-Fi, Dante NIC. In multi-homed setups you control exactly which network carries which MIDI signal.
⇄
Modes
TX / RX / BIDIR
Every port has a configurable direction. TX: your DAW sends, data goes to the network. RX: network data arrives, your DAW receives. BIDIR: both simultaneously. LOOPBACK: TX port receives its own transmitted data for monitoring.
▶
Console
Interactive REPL
Full terminal REPL with command history. show · monitor · filter · reload · send · test · debug. Reload config without restarting the process. Filter monitor output by message type.
✓
Integrity
Packet Integrity
Every UDP packet carries a MNET magic header, version field, sender UUID, per-device sequence counter, microsecond timestamp, and CRC32. Malformed or corrupt packets are silently dropped.
⊕
Transport
Multicast Architecture
One TX port reaches all RX ports simultaneously. No unicast fan-out, no central broker, no server to maintain. The network handles distribution. Scope is LAN-only — data does not leave your subnet.
◼
Stage
Offline / Stage Ready
No internet connection required. No cloud, no license server, no telemetry. Runs on an isolated LAN. Startup commands in config.ini execute automatically — zero interaction needed on stage systems.
◎
Monitoring
Peer Health & Latency Test
Discover all MIDInet peers visible on the LAN from a single machine. The built-in ping command measures round-trip response time for each peer and reports the MIDInet version running on it — so you know the entire network is up before a show starts.
Cross-Platform
Mac and Windows machines talk to each other — no exceptions.
MIDInet is not "cross-platform" in the sense that it runs on multiple OS separately. A Mac and a Windows PC on the same LAN exchange MIDI data in real time, transparently. A mixed setup — some Macs, some Windows machines — works exactly like an all-Mac or all-Windows rig. The OS is invisible to the network.
Console Reference
Every command.
Command
Syntax
Description
show
show
Status table for all virtual MIDI cards: mode, loopback, network, IP, status, connected peers
monitor
monitor on|off
Enable or disable real-time display of MIDI messages with timestamp, direction, card, and message type
filter
filter realtime|sysex|pc|short|off
Hide message types from monitor output. Multiple filters accumulate. off clears all filters
discovery
discovery on|off|<seconds>
Set mDNS peer discovery polling interval. Lower = faster detection, more CPU. Default: 3s
reload
reload
Full in-process restart: destroy all devices, re-read config.ini, recreate ports, re-register mDNS, run startup commands
send
send <card> [note|cc|pc|realtime|sysex]
Simulate a MIDI message from a card. Useful for testing transport without a physical MIDI source
test
test <device> <note>
Send Note On (velocity 100) to a specific device. Quick connectivity test
debug
debug
List all detected network interfaces with IPs and all MIDI devices visible to the system
config
config
Show loaded configuration summary: card count, startup commands
quit / exit
quit | exit
Graceful shutdown: deregister mDNS services, close sockets, exit
Pricing
Simple. One license. Lifetime.
No subscription. No activation server at runtime. Activate once, use forever on up to 2 computers.
Trial
Free
30 days · full features
All ports, all modes
Unlimited peers on LAN
Full console access
macOS + Windows
30-day activation window
Early Access
License
€49
early access · regular €89
Everything in Trial
Lifetime license
Up to 2 computers
Offline after activation
Free updates within major version
Email support
Activation via activation command in the MIDInet console. Max 2 simultaneous activations per license. Deactivation frees a slot.
Download
MIDInet v1.5.5
30-day free trial · full features · no credit card required
Run the installer · launch MIDInet from Windows Terminal
Trial & Activation
MIDInet runs for 30 days without a license key. All features are fully available during the trial.
To activate, purchase a license and run the activation command in the MIDInet console:
MIDInet > activation MIDN-XXXX-XXXX-XXXX-XXXX
✅ License activated on this machine. Remaining slots: 1 / 2
Up to 2 computers can be activated simultaneously per license. Deactivating a machine frees a slot.
System Requirements
Network: All machines must be on the same LAN segment. UDP multicast must not be blocked. UDP port 47910 and mDNS port 5353 must be open and reachable between all hosts.
Ports: Any number of virtual MIDI ports can be created, each with a custom name. Ports are added and removed at runtime — no reboot required.
Performance: MIDInet is a lightweight CLI binary. Typical RAM usage <15 MB. No GPU, no audio driver required.
Buy
MIDInet License
Lifetime license · up to 2 computers · offline after activation
Early Access
€49
limited time offer
Regular
€89
standard price
Secure payment via PayPal. You will receive your license key by email within minutes.
PayPal checkout — coming soon
PayPal checkout — coming soon
Contact
Get in touch
For support, licensing questions, or feedback on MIDInet, write to info@azlive.io or use the form.
