FTDI VCP driver
Required for detection and operation of monome device

monomeserial (standalone)
osx/xp osc/midi router

serial-pyio (python)
Serial/OSC converter for monome 40h (like serialio, MonomeSerial, serialdotnet and serialXP) but supposed to be platform independent. It also includes an OSC independent API-like suite of Python objects for interfacing with XXh devices.

libmonome (standalone, C)
programming library for interacting with monome devices with C (or any language which can call C). includes a command-line implementation of monomeserial.

Monomial (Processing/Java)
Processing library that enables communication between Processing and a monome.

monome base (max/msp)
Helpful max/msp patches
(edit note: this should be split into individual apps)

mapd (standalone)
osx graphical osc/midi router with virtual widgets
note: currently unsupported, needs developers

monomectrl (max/msp)
A Max 5 matrixctrl replacement with additional monome friendly functionality

clear (max/msp)
Helpful utility to clear off all lit buttons

quadrants (max/msp)
Helpful utility to split up your monome into sections.

switcher (max/msp)
Run multiple patches on the 40h / 64.

monomer (ruby)
Ruby library and sample apps for communicating with the monome via osc

shado (java, python, max/msp)
open-source compositing and sprite library, bundled with sources, javadocs, python demos (including the sources of the animation in the UFO video) and documentation

typosaurus.monome (standalone)
configurable text input utility integrated into MonomeSerial for OS X.

monomecontrol objects (max/msp)
Make building your monome interface easier.

monoswitch (max/msp)
Run multiple applications on Monome 64, 128 and 256.

monomecereal (max/msp)
Replace monomeserial.

oscroute.js (max/msp)
Javascript oscroute.

monomeclass (chuck)
Chuck class for the monome.

SkyMonome (java)
Library for an easy programming of the Monome in Java language.

Monome Tweet Reader (java)
Read your twitter updates on your monome.

Hub (max/msp)
Monome segmenter allowing multiple apps to run in one monome instance.

monome_clock (max-ITM-external)
An ITM-based object for quick and easy app design. Allows for sequencing and synchronization.

monome_community (max external)
a simple object to help detect up to 16-button-presses at once per object(setting up multiple objects will allow for detection of any number of buttons at once).

MOEBIUS (max-ITM-external)
An ITM-based object for sequencing and synchronization with detailed sequencer control and quick and easy interface(button to led) setup.

puma (Puredata)
A collection of Puredata abstractions to ease and speed up the development of monome applications.

Audio/sampling

mlr (max/msp)
Live sample cutting
wolves (max/msp)
make your inputs howl
frost (max/msp/jitter)
Spectral freezing unit
npc (max/msp)
MPC emulator
64step (max/msp)
Dynamic step sequencer
flip (max/msp)
Multi-voiced rapid reslicer
chuckstep (ChucK)
simple step sequencer with live cutting
grain (ChucK)
Simple granular synthesis with Chuck
repeat (max/msp)
live sample cutting with note repeat (mlr styley)
dj64 (max/msp)
djing environment for 40h / 64.
nms (in development)
sampling and sequencing workstation
axiome (Pure Data)
Sample cutting
mate (max/msp)
soundfile preparation for mlr
breakme (ChucK)
breaking/sample cutting
64fingers (Max5)
64 samples/loops with 4 different trigger modes
C¥¶€R (Max5 - standalone app)
granular cut-up with individually sequencable samplers and effects
MonoMahna (Max5)
Muppet-crazy sampler ANIMAAAL!
pd_mlr (Pure Data)
Sample cutting (64/128/256) with audio loop recorders
813 (standalone)
modular sampler&synth (64)

Audio/plugin

Monochrome (vst)
Monome-interfaced dynamic sequencer
Molar (vst)
Sample recutting sequencer

Audio/midi

xor (max/msp)
generative sequencer
meeq (chuck)
poly-rhythmic dynamic step sequencer
ffflux (max/msp)
undulating arpeggio maker
boiingg (max/msp)
bouncing midi pattern generator
muon (max/msp)
emergent feedback sequencer
flin (max/msp)
bit traffic music box
parc (max/msp)
probabilistic sequencer
balron40h (max/msp)
Tonal mapping
midilife (max/msp)
conway’s life with midi output http://post.monome.org/comments.php?DiscussionID=180
whiz (max/msp)
random step sequencer & x/y lfo manipulator
Press Cafe (max/msp)
Real time rhythmic pattern performance
Blinken Park (max/msp)
Blinky lights with some random MIDI
TR-256 (max/msp)
Roland-style pattern programming
polygomé (max/msp)
Interactive real-time pattern instrument
trigger sequencer (max/msp)
fire off MIDI notes and MIDI CCs
mabalhabla (max/msp)
MIDI pitch arrangement (was fourths)
ksd (max/msp)
MIDI phrase instrument
Cygnet (max/msp)
Alternate pitch layout + 8 track sequencer
Residue (max/msp)
Like TR-256 but split in half for drums + bass
brontologik4 (max/msp)
MIDI composing system
8step sequencer (Pure Data)
very basic 8 step sequencer
flickering lights (Java)
step sequencer with wave map
sweep (Pure Data)
Wide-range, rapid chord player. Minimal midi controller
sepra (max/msp)
mutli-voiced probabilistic composer http://wiki.monome.org/view/AppMaxMspSepraBeta
bends (max/msp)
multiple two-dimensional tilt controllers
drumwreck, liveio, livestep
ableton routers
sevenuplive (Java)
Multi-app interface for Ableton Live
Pages (Java)
allow multiple applications to run simultaneously on a single monome device.
Monome Basic (Python)
Clip Launcher and interface for Ableton Live
Mirrome (max/msp)
web cam enabled pixel mirror, with midi outs.
soyuz (max/msp)
scrolling midi step sequencer.
tintinnabulome (max/msp)
modal arpeggiator (deploys the compositional device of ”tintinnabulation”).
livecontrol (Python)
Ableton monome control interface
keys (max/msp)
basic keyboard
LoopForLove (max/msp)
a simple midi loopstation with switchable midi in and out
traknome (Native Instruments Traktor Pro)
a series of Traktor Settings Information files (*.tsi) that allow communication with monome devices over a virtual midi cable (optimally used with the monome 256)
ArpShift (max/msp)
A melodic, interval based, poly-rhythmic arpeggiator.
64faders (max/msp)
64 separate midi faders over 8 pages.
Plinkonome (max/msp)
Plinko based variable note sequencer (v 0.3)
toneclock (max/msp)
cyclic harmony keyboard app based on intervals
Daemon (max/msp)
step sequencer with tools for custom chord playback
Daemon (max/msp)
step sequencer with tools for custom chord playback
8track (jruby)
8 track x0x-style percussion sequencer with Ableton-esque pattern launching and individual pattern lengths

Max for Live

bounds128w
a port of boiingg.
thisinstance (maxforlive)
a primitive for creating maxforlive monome apps.
myr_monome_handling (max5)
a bpatcher primitive for monome handling in maxforlive devices. Allows selection of either Auto-Focus, Auto-Configuration or Manual Configuration to connect to the monome serial/routing application.
dj64effectm4l (maxforlive)
effects section from dj64 ported into maxforlive.
plinkonome_m4l (maxforlive)
plinkonome ported to maxforlive
mlr_2.27_maxforlive (maxforlive)
mlr 2.27 ported to max for live.
live_clip_chopper (maxforlive)
An MLR like device for controlling the playing position of clips within Live.
gs.ClipStep (maxforlive)
Step Sequencer for midi within Live clips.
flin_m4l_beta (maxforlive)
flin ported to max for live beta version.
monoMIDI (maxforlive)
Live MIDI Step Sequencer (usable standalone or within MonoLive)
monoLive (maxforlive)
Live control surface and router app
monoParaSteppa (maxforlive)
Step-based parameter modulator/LFO for Live
pulse (maxforlive)
LED intensity metronome add-on.
raptor (maxforlive)
midi trigger + pattern recorders
velocity (maxforlive)
drum sequencer