Frankenloop is a “step sequencer with a twist” — probability settings for each step so that it sounds different each time.
It’s created by Peter Dines, and it’s released a ShareAlike Creative Commons license. Download at the Noisepages site.

Ammobox:lite is a free ensemble for Reaktor that promises to be “the shift in the way people will think about turntablism”:
With ammobox you can layer samples into a ’stream’ and scratch the stream, this allows for asyncronous sample triggering and layered effects that would be impossible otherwise. Microscopically you could say that ammobox is a [...]

A step by step tutorial on building a synth in Reaktor.

Native Instruments today announced Kore Player, a free software instrument that adds full “ready-to-play” capabilities to the recently established line of Kore Soundpack libraries.
Based on the Kore 2 host system, the Kore Player lets musicians and producers efficiently access and play any Kore Soundpack material in their host sequencer and as a standalone instrument - [...]

alienmachine has posted a couple of great-sounding string-synth emulations built in Reaktor.
Eminent-V 310 Strings Ensemble v1 download:
http://hyperfileshare.com/d/49efa56e
Solina-V String Ensemble v1 download:
http://hyperfileshare.com/d/3b22a364
via KVR

Mekarer, who may be the MacGyver of the music world, has turned a sponge into a snare drum, using a guitar pickup and a piece of string:

Here’s his English explanation:
“I use Reaktor to translate the signal with its amplitube to snare drums. Each punch, with sound a snare drum (not the same snare all the [...]

Native Instruments has released Reaktor 5.1.2, an update for its award-winning modular sound design studio.
The new version brings Universal Binary support, allowing users of Intel-based Macintosh computers to fully utilize the creative potential of Reaktor on their machines. Version 5.1.2 also features improved integration with Native Instruments’ universal sound platform KORE, resulting in faster loading [...]

Native Instruments has released an update to its virtual modular synthesizer, Reaktor 5.1.
Reaktor 5.1 takes Native Instruments versatile sound studio a step further: Alongside numerous improvements, this latest version offers a wide range of new and updated instruments and sounds – the total number of synthesizers, samplers and effects included has risen to a total [...]

The Musicrow Group has released Crow Gold Pack for Native Instruments Reaktor-5, a collection of 23 Reaktor ensembles.
The pack contains a variety of audio tools for the contemporary music producer: vintage synthesizer emulators, exciting futuristic synths, a turntable emulator, an authentic accordion synth, a bass sampler-synth, a plate reverb emulator, vintage effect emulators, filters, distortions, [...]

Native Instruments has announced REAKT, a special performance event showcasing REAKTOR 5 and its multitudinous creative aspects. Guests can expect their senses to be inspired by a series of live music performances designed with instruments from the REAKTOR 5 arsenal, and a unique interactive audio-visual installation featuring both REAKTOR synthesizers and visual synthesis based on [...]

Native Instruments has announced that the fifth generation of Reaktor, the modular sound studio, is now available from authorized dealers worldwide.
Core Technology lays the foundation for this powerful new version of Reaktor and breaks new ground in flexibility and sound quality. Included with REAKTOR 5 are more than 20 new and re-designed instruments: Generate completely [...]

Musicmesse: REAKTOR 5 is the next generation of the award-winning modular sound design studio that fuses synthesis, sampling and effects. The latest version introduces the new “REAKTOR Core Technology”, resulting in a major technology leap that dramatically widens the scope of REAKTOR-based instrument design. With a massive instrument library, powerful new routing options, vastly expanded [...]

2005 NAMM Expo Update: Native Instruments has introduced Electronic Instruments 2 XT, the extended version of their Reaktor instrument collection.
The new version contains all the unique synthesizers, drum machines and effects from the collection as individual self-contained software instruments. Each of the eight instruments in Electronic Instruments 2 XT can be run both standalone as [...]

Native Instruments Reaktor Electronic Instruments 2 is now available in stores worldwide.
Electronic Instruments 2 is a collection of eight new instruments for Reaktor 4 and Reaktor Session. It contains three unique synthesizers, two inspiring drum machines and three highly versatile effect units, all of which offer an unprecedented level of sonic sophistication and visual polish. [...]