e-instruments is a Hamburg, Germany-based developer of virtual instruments for music production, founded in 2009 by Thomas Koritke, who previously spent years as a sound designer on Yamaha hardware instruments. The company builds sampled software instruments primarily for Native Instruments' Kontakt platform, targeting composers, producers, and sound designers who want detailed, playable recreations of acoustic and electric sources.

The catalog is anchored by the Session Keys line of acoustic and electric piano libraries (including Session Keys Grand S, Grand Y, Upright, and the Electric series), the Session Strings and Session Horns ensemble libraries, and the Cremona Quartet, a solo strings collection sampled from historic Italian violins, a viola, and a cello. More recent releases include the Velvet and Desolate guitar libraries, bass and tape-based instruments, and the free Fragment series. e-instruments also develops iOS apps under the Pure name, such as Pure Strings, which turn iPhone and iPad into expressive string instruments.

The company's libraries are typically oriented toward cinematic, pop, and production work rather than orchestral completeness, and are known for their focus on playability, articulation detail, and built-in performance engines rather than sheer sample count.

e-instruments has 12 products cataloged on Equipboard, including Kontakt Instrument, Instrument Bundles, and Virtual Instrument.