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SPECIFICTION
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Jamulus

jamulus.app

Free plan Open source WindowsmacOSLinuxiOSAndroidAPI
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Spec score 8.7 #5 of 28 in Music Collaboration Software

What it is

Jamulus is free, open-source software for playing, rehearsing, or jamming remotely in real time over a broadband connection. It is described for choirs, bands, folk and classical musicians, music lessons, schools, and universities. In its client mixer, users can set the level they hear from each connected musician and use mute, solo, pan, and grouping controls. People connected to the same server can exchange text messages visible to everyone there. A connected MIDI controller can operate mixer volume, pan, mute, and solo controls, with availability depending on platform and version. Users may run their own server, but this is optional because clients can connect to listed or unlisted servers. Network conditions affect server quality; the manual says fewer than five players is usually fine on a slower home connection. Communications are sent without encryption, and normal use shares a user's Jamulus name, city, country, instrument, and skill level with connected servers, peers, and protocol-using third parties. When recording is enabled, unmodified servers show a notice, and the server operator controls recordings.

Spec sheet

What it does
Jamulus lets musicians rehearse, jam and perform together online using low-latency audio.Read 15 Oct 2026 · jamulus.app
Purpose
Jamulus lets people play, rehearse, or jam remotely in real time with high-quality, low-latency sound over a broadband connection.Read 3 Oct 2026 · jamulus.app
Platforms
The download page links to builds for Windows, macOS, Debian/Ubuntu, and other platforms.Read 3 Oct 2026 · jamulus.app
Support
The site directs users to documentation, troubleshooting pages, and community forums for help.Read 3 Oct 2026 · jamulus.app
Maker
The project credits software by Volker Fischer and contributors.Read 15 Oct 2026 · jamulus.app
Authentication limit
Jamulus has no built-in password protection or other user-authentication mechanism.Read 15 Oct 2026 · jamulus.app
Chat
Clients connected to the same server can exchange text messages that are visible to everyone on that server.Read 3 Oct 2026 · jamulus.app
Client-server audio
Each client sends audio to a Jamulus server, which mixes it and returns an individual mix to every client.Read 15 Oct 2026 · github.com
Documentation and support
The project provides manuals, FAQs, troubleshooting pages, a community knowledge base, GitHub discussions and issue tracking.Read 15 Oct 2026 · jamulus.app
Documentation licence
The Jamulus documentation is published under Creative Commons Attribution-ShareAlike.Read 15 Oct 2026 · jamulus.app
Free and open source
Jamulus is free and open-source software licensed under the GPL.Read 3 Oct 2026 · jamulus.app
Independent rating
Produce Like A Pro rated Jamulus 3 out of 5, describing it as a strong free client that is easy to start with.Read 15 Oct 2026 · producelikeapro.com
iOS compatibility
The App Store listing requires iOS 12 or later and supports iPhone and iPad.Read 15 Oct 2026 · apps.apple.com
iOS hardware guidance
The iOS documentation strongly recommends a wired audio interface and USB-Ethernet adapter, and says Bluetooth headphones work poorly.Read 15 Oct 2026 · jamulus.app
Latest release
GitHub lists Jamulus 3.12.5, released 31 August 2026, with fixes including a recording-related server crash and a client startup crash.Read 15 Oct 2026 · github.com
Licence
Jamulus is free and open-source software released under the GPL.Read 15 Oct 2026 · jamulus.app
Limit: audio instability
A GitHub issue reports buffering, popping and crackling that made sessions difficult, while noting the technology was promising.Read 15 Oct 2026 · github.com
Limit: latency
The independent review reported that latency can remain a major problem, with distant connections sometimes exceeding 300 ms ping.Read 15 Oct 2026 · producelikeapro.com
Limit: missing video
The independent review deducted points because Jamulus has no video capability.Read 15 Oct 2026 · producelikeapro.com
Limit: network dependence
A TalkBass user reported 60–100 ms latency despite wired high-speed connections and considered the result unusable.Read 15 Oct 2026 · talkbass.com
Limit: private-server setup
The independent review found configuring a genuinely private server somewhat difficult because firewall port forwarding is required.Read 15 Oct 2026 · producelikeapro.com
Limit: technical expertise
Hacker News users said successful sessions may require fiber, Ethernet, wired headphones, suitable audio interfaces and substantial adaptation to delay.Read 15 Oct 2026 · news.ycombinator.com
Low-latency focus
The product is designed for real-time musical performance over ordinary broadband connections.Read 15 Oct 2026 · jamulus.app
MIDI control
A connected MIDI controller can control mixer volume faders, pan, mute, and solo, with platform and version availability documented in the manual.Read 3 Oct 2026 · jamulus.app
Mixer
The client mixer lets users adjust the level they hear from each connected musician, with mute, solo, pan, and grouping controls.Read 3 Oct 2026 · jamulus.app
Network guidance
The FAQ says low ping matters more than high bandwidth and that standard broadband is usually sufficient for clients.Read 15 Oct 2026 · jamulus.app
Network requirements
The manual says server quality depends on network conditions and that fewer than five players is usually fine on a slower home connection such as 10 Mbit/s down and 1 Mbit/s up.Read 3 Oct 2026 · jamulus.app
No built-in metronome
The FAQ says Jamulus has no metronome or synchronization signal.Read 15 Oct 2026 · jamulus.app
No video
Jamulus does not provide video; the documentation suggests using Jitsi or Zoom separately when visual communication is needed.Read 15 Oct 2026 · jamulus.app
Personal mixer
Every participant can control their own mix of other musicians on the server.Read 15 Oct 2026 · github.com
Praise: ease of use
The independent review praised Jamulus for being easy to set up and get started.Read 15 Oct 2026 · producelikeapro.com
Praise: free access
The independent review said the free client offers a special way to meet musicians and share music online.Read 15 Oct 2026 · producelikeapro.com
Privacy and encryption
The privacy statement says Jamulus communications between clients, servers, directories, and third-party protocol users are sent without encryption.Read 3 Oct 2026 · jamulus.app
Privacy disclosure
Apple’s listing says the iOS app may collect coarse location and audio data that are not linked to the user’s identity.Read 15 Oct 2026 · apps.apple.com
Private servers
Servers can be unregistered and shared directly by address without appearing in a directory.Read 15 Oct 2026 · jamulus.app
Profile data
During normal use, a user's Jamulus name, city, country, instrument, and skill level are exchanged with connected servers, peers on those servers, and protocol-using third parties such as directories.Read 3 Oct 2026 · jamulus.app
Project hosting
The source repository is public on GitHub and shows about 1.1 thousand stars and 250 forks.Read 15 Oct 2026 · github.com
Public API
The server exposes a JSON-RPC method named jamulusserver/getClients; the older HTML-status option is deprecated.Read 15 Oct 2026 · github.com
Public directories
Registered servers can appear in directories that clients use to discover servers and choose one with suitable latency.Read 15 Oct 2026 · jamulus.app
Rating on Apple App Store
Not enough ratings or reviews to display an overviewRead 15 Oct 2026 · apps.apple.com
Recording
Unmodified servers show a notice when recording is enabled, and recordings are stored by and controlled by the server operator.Read 3 Oct 2026 · jamulus.app
Self-hosting
Jamulus includes server software that can be run privately or publicly, including headless Linux deployments.Read 15 Oct 2026 · github.com
Server capacity limit
Directories can register up to 150 servers, according to the server administration manual.Read 3 Oct 2026 · jamulus.app
Technology integrations
Official project materials identify Qt, the Opus codec, ASIO, Core Audio and JACK as technologies used by Jamulus.Read 15 Oct 2026 · github.com
Text chat
The client provides a chat window for communicating with other participants.Read 15 Oct 2026 · jamulus.app
Use cases
The site describes use by choirs, bands, folk and classical musicians, music lessons, schools, and universities.Read 3 Oct 2026 · jamulus.app
Windows setup
Windows installation recommends a native ASIO sound-card driver, with ASIO4ALL offered when one is unavailable.Read 15 Oct 2026 · github.com
Wireless limitation
The documentation warns that Wi-Fi variability and Bluetooth audio commonly add latency and instability.Read 15 Oct 2026 · jamulus.app

Plans and prices

Free and open-source Jamulus Free Real-time online music collaboration · client and server software · GPL-licensed source code Read 15 Oct 2026 · jamulus.app
Jamulus Free Free and open-source software; no usage limits stated Read 3 Oct 2026 · jamulus.app

Every Jamulus plan and price →

Strong points and limits

Strong points

  • Free and open-source under the GPL
  • Mixer offers mute, solo, pan, and grouping
  • Text chat is visible to everyone on a server
  • MIDI controllers can operate mixer controls

Limits

  • Communications are sent without encryption
  • Normal use shares profile details with connected parties
  • Network conditions affect server quality

Who it suits

Jamulus suits musicians, choirs, schools, and universities seeking remote real-time rehearsals or lessons. It may also suit people who want mixer controls or the option to run their own server.

Verdict

Jamulus provides remote, real-time music sessions with per-musician mixer controls and server chat. Before using it, note that communications are unencrypted and profile details are shared during normal use.

Where Specifiction places it

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