ToneBoosters is a software audio plugin company founded by Jeroen Breebaart, a Dutch audio scientist with a PhD from Eindhoven University of Technology and years of experience at Philips Research in The Netherlands. Originally releasing plugins under his own name, Breebaart rebranded the project as ToneBoosters in 2010. The company's plugins are rooted in academic research in digital signal processing and psychoacoustics, combining advanced algorithms with affordable pricing and lightweight CPU usage.

ToneBoosters offers a broad catalog of mixing and mastering plugins spanning dynamics, EQ, and effects. Key products include Equalizer Pro and Equalizer 4 (parametric EQs), Barricade 4 (a true-peak mastering limiter), MBC (a multi-band compressor praised in production communities for its transparency), ReelBus 4 (tape saturation emulation), Sibalance 4 (de-esser), Reverb 4, and Enhancer (a sub-harmonic generator and multi-band saturator). The lineup also includes Morphit, a headphone correction plugin supporting over 600 headphone models, BitJuggler (a bitcrusher for lo-fi digital effects), and two synthesizers — Flowtones (virtual analog) and Lowtone (bass-focused). Free utilities include GonioMeter for stereo analysis and Spectrogram for frequency visualization. Plugins are available in VST, VST3, AAX, and Audio Unit formats for Windows, macOS, and Linux, with select titles also on iOS and Android.

ToneBoosters has 17 products cataloged on Equipboard, including Saturation Plugins, FX Bundle Plugins, and EQ Plugins. Their gear is featured by 3 artists, with the strongest followings in Electronic, Rock, and Hip Hop. Notable users include Virtual Riot, emma essex, and Dan Duncan.