LoopBe1 is an internal MIDI device for transferring MIDI data between computer programs. LoopBe1 is an "invisible cable" to connect a MIDI outport of an application to any other application´s MIDI import. All MIDI data sent to the program´s output is channeled to the receiving applications in real-time. You may connect up to 8 applications to LoopBe's import and up to 8 applications to the outport, all sending and receiving at the same time. LoopBe1 is a native Windows™ 2k/XP WDM kernel mode driver, so expect the lowest possible latency. Due to its architecture, it doesn´t work on Windows 95/98/ME. Programs do not need to link with special libraries, so LoopBe1 works with every MIDI or DirectMusic™-capable application. LoopBe1 is free for non-commercial, personal use only. Any commercial use beyond a 30-day evaluation period requires the purchase of a commercial use license.

LoopBe1 Commercial Use License

LoopBe30 for Windows - Virtual MIDI LoopBack device driver | nerds

LoopBe30 - A virtual MIDI device for transferring MIDI data between applications. LoopBe30 provides 30 independent "invisible cables" to connect MIDI outports of applications to any other application's MIDI import. You may connect up to 8 applications to every single import and up to 8 applications to every single outport, all sending and receiving at the same time. Every port provides the full 16 MIDI channels. LoopBe30 is a native Windows™ 2k/XP WDM kernel mode driver. Expect the lowest possible latency. LoopBe30 comes with powerful shortcut detection. It mutes its ports if the data rate is higher than the MIDI specification of 31.25 kbps. Sometimes it might be necessary or desirable to send more data, for example by sending excessive MIDI polyphonic aftertouch messages. A hardware legacy device would fail here, but not LoopBe30. If you want to send more data than allowed by the spec, and you are sure your setup is shortcut free, simply disable the shortcut detection.LoopBe30 is a native Windows™ 2k/XP WDM kernel mode driver. Expect the lowest possible latency. LoopBe30 comes with powerful shortcut detection. It mutes its ports if the data rate is higher than the MIDI specification of 31.25 kbps. Sometimes it might be necessary or desirable to send more data, for example by sending excessive MIDI polyphonic aftertouch messages. A hardware legacy device would fail here, but not LoopBe30. If you want to send more data than allowed by the spec, and you are sure your setup is shortcut free, simply disable the shortcut detection.

LoopBe30 for Windows - Virtual MIDI LoopBack device driver. 30 Ports

LoopBeAudio for Windows - Virtual Audio Loopback driver | nerds

LoopBeAudio is a virtual audio device to transfer audio between computer programs, digitally, without any quality loss. The technical limits are only restricted through the Operating System. Configure up to 24 audio channels, a sample rate from 8000 Hz to 384000 Hz with a bit depth from 8-bit to 32-bit. Build a virtual 7.1 surround device, even though you don't have the built-in hardware. LoopBeAudio is a native Windows™ WDM kernel mode driver, so expect the lowest possible latency. Programs do not need to link with special libraries, so LoopBeAudio works with every audio-capable Windows application.

LoopBeAudio for Windows - Virtual Audio Loopback driver

ipMIDI - 3 Client License - MIDI over Ethernet ports | nerds

ipMIDI - MIDI over Ethernet ports - send MIDI over your LAN. You can route MIDI over your Ethernet network, using ipMIDI ports to send and receive MIDI data between PCs connected to your LAN. For example, if you have a music studio with several computers connected via MIDI interfaces and MIDI cables, ipMIDI will replace them all. Any MIDI application on the LAN can communicate with any other without any new physical connections, eliminating separate MIDI cables and additional hardware interfaces and if you are running a wireless IP network (i.e. 802.11 a/b/g) you don't need any cables at all! This is becoming more in demand, the ability to just establish a temporary local wireless network and hook in the PCs.