Since the early 1990s, Digi International has acquired numerous companies. In the 1990s, Digi acquired companies including Arnet Corp, Stargate and Milan Technologies, Lan Access, Aetherworks, Centrall Data Corp, and German-based ITK International Inc.
In 2000, Digi acquired Texas-based USB connectivity manufacturer Inside Out Networks, and phased the brand out in 2006. In 2002, the company acquired Net Silicon, a fabless manufacturer of ARM-based microprocessors.
In 2005, Digi acquired Rabbit Semiconductor, a manufacturer of Z180 based silicon, embedded modules and single-board computers. In the same year, the company acquired processor module manufacturers FS Forth-Systeme GmbH of Breisach, Germany, and Logroño, Spain-based Sistemas Embebidos S.A.
In 2006, the company acquired Wireless technology company MaxStream, for $38.8M. Two years later, in 2008, Digi acquired Cellular router manufacturer Sarian Systems Ltd. for $30.5 million. In the same year, Digi also acquired wireless technology design services company Spectrum Design Solutions Inc.
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In 2009, Digi acquired Mobiapps, a fabless manufacturer of satellite modems on the Orbcomm satellite network.
In 2012, Digi acquired Cloud computing services provider Etherios.
Digi acquired Toronto-based temperature monitoring company Bluenica in 2015. A year later, in 2016, Digi acquired FreshTemps, temperature monitoring and task management for the food industry.
In 2017, Digi acquired SMART Temps and TempAlert, two temperature and task management providers for retail, education, food service, healthcare, and industrial applications. A year later, in 2018, Digi acquired Network equipment company Accelerated Concepts.
Digi acquired Utah-based Opengear, a computer network technology company in 2019.
In 2021, Digi acquired Haxiot, a provider of wireless connection services; Ctek, a company specializing in remote monitoring and industrial controls; and Ventus Holdings, a telecommunications company.
In 2025, Digi acquired Jolt Software for $145.5 million.
In 2026, Digi acquired Particle, an IoT hardware and software company.
