Orange Tree Samples is a California-based developer of sample libraries for Native Instruments' KONTAKT platform, founded by Greg Schlaepfer. The company specializes in deeply sampled virtual instruments with an emphasis on realism and playability, combining multi-velocity recording techniques with custom scripting and physical-modeling concepts to reproduce the nuance of live performance without requiring extensive programming from the user.

The catalog is best known for its electric and acoustic guitar and bass libraries, particularly the long-running Evolution series, which includes titles such as Evolution Strawberry, Evolution Songwriter, Evolution Texas Twang, and Evolution Roundwound Bass. Beyond fretted instruments, the company produces libraries covering pianos and electric keyboards, mallet percussion (marimba, kalimba, vibraphone), harp, flutes, and various world and folk instruments. Many of the products are offered as NKS-ready libraries through the Native Instruments partner program.

Orange Tree Samples is regarded in the KONTAKT community for focusing on detailed articulation handling — legato, slides, bends, fret noise, and picking dynamics — rather than on large orchestral or cinematic collections. Schlaepfer's earlier work on libraries like ManyGuitar and ManyBass informed the studio's approach to scripted instrument design, and the company also maintains Preset Galaxy, a community-driven site for sharing presets across their libraries and other instruments.

Orange Tree Samples has 15 products cataloged on Equipboard, including Kontakt Instrument and Guitar Samples. Their gear is featured by 1 artist, with the strongest followings in Electronic, Rock, and Hip Hop. Notable users include emma essex.