Caldera International

Caldera International, Inc.

Company type	Public (until 2002)
Industry	Software
Predecessor	Caldera Systems, Inc.
Founded	August 21, 1998 (1998-08-21) in Orem, Utah, United States
Founder	Ransom Love (CEO)
Defunct	2002
Fate	Renamed The SCO Group in 2002
Headquarters	Orem , United States
Key people	Ransom Love (CEO until 2002), Darl McBride (CEO from 2002)
Products	Caldera OpenLinux, Open UNIX (UnixWare), Volution suite
Number of employees	120 (approximate before SCO acquisition)
Parent	Caldera, Inc. (initially)

Caldera International, Inc., originally known as Caldera Systems, was a U.S.-based software enterprise operating from 1998 until 2002, focusing on operating system solutions built on Linux and Unix platforms.

Established in August 1998 as a spin-off from Caldera, Inc. with Ransom Love serving as CEO, Caldera Systems concentrated on the corporate sector through its flagship product, Caldera OpenLinux. This premium Linux distribution featured a graphical installation process, administrative utilities, and included proprietary software packages. The company was also engaged in the Linux Java software platform community.

In March 2000, Caldera Systems successfully launched an IPO, although its share performance trailed behind rivals such as Red Hat during the peak of the "Linux mania" era.

By August 2000, Caldera Systems had acquired Unix-related technology and services from the Santa Cruz Operation (SCO). Following this acquisition, the company rebranded as Caldera International in May 2001 with the objective of integrating Unix and Linux product lines by utilizing SCO’s UnixWare (renamed Open UNIX) and its broad reseller network. The firm further expanded its enterprise portfolio by creating the Volution suite—comprising system management, messaging, and authentication solutions. Additionally, Caldera International was a participant in United Linux, a consortium of Linux vendors aiming to compete against Red Hat’s dominance.

Despite these initiatives, Caldera encountered ongoing financial difficulties throughout its existence. In June 2002, facing sustained losses, CEO Ransom Love was succeeded by Darl McBride, who rebranded the company as The SCO Group and redirected its business strategy substantially.

Origins and establishment

Caldera, Inc., based in Utah, was founded in 1994 by Bryan Wayne Sparks and Ransom H. Love with initial investment from Ray Noorda's Canopy Group. Its main offering was Caldera Network Desktop (CND), a Linux distribution tailored for business users featuring proprietary enhancements. The acquisition of German firm LST Software GmbH and its LST Power Linux formed the foundation for Caldera OpenLinux (COL).

In 1996, Caldera obtained DR-DOS from Novell, along with an ongoing lawsuit against Microsoft alleging monopolistic practices, illegal tying arrangements, exclusive dealing, and tortious interference in the Caldera v. Microsoft case.

On September 2, 1998, Caldera announced the formation of two Utah-based subsidiaries: Caldera Systems, Inc., incorporated on August 21, 1998, and Caldera Thin Clients, Inc. Caldera Systems assumed responsibility for Linux development, training, services, and support; meanwhile, Caldera Thin Clients (renamed Lineo in 1999) managed DOS and embedded system operations. The parent company Caldera, Inc. retained control over the lawsuit against Microsoft.

"Linux for Business" approach

Headquartered in Orem, Utah, Caldera Systems was led by co-founder Ransom Love as President and CEO and operated its Linux development center through Caldera Deutschland GmbH located in Erlangen, Germany. Drew Spencer joined as Chief Technology Officer in 1999.

Focusing on the Linux software sector, Caldera promoted its distribution—Caldera OpenLinux—with an emphasis on corporate training programs, technical support, and professional services. The company developed certification programs for Linux proficiency and expertise in the KDE desktop environment included in its distribution. In partnership with the Linux Professional Institute, Caldera established Authorized Linux Education Centers worldwide to prepare students for certification exams. Initial courses covered multiple Linux distributions while advanced training concentrated exclusively on OpenLinux.

While Red Hat Software led early market share in the Linux business space with significant investment backing and media coverage, competitors such as SuSE, Turbolinux, and Mandrake Soft were also active. However, none had yet achieved profitability within open source software ventures.

Caldera’s premium Linux distribution incorporated proprietary applications to improve business usability. Included were Novell’s NetWare for Linux networking solutions; Sun Microsystems' Wabi enabling Windows application compatibility under Linux; Corel's WordPerfect; and Applixware productivity software. For users employing dual-boot configurations, PowerQuest's PartitionMagic was bundled to allow safe disk partitioning without data loss.

This combination of proprietary components sparked discussion concerning product purity. Red Hat CEO Bob Young expressed concerns about Caldera’s dependence on licensed third-party software. In response, Caldera maintained that integrating open-source with commercial products provided a practical enterprise-ready Linux solution.

Additionally marketed retail at $49 USD via CD-ROM for IBM PC compatible installations, April 1999 saw the release of OpenLinux 2.2 featuring a fully graphical installer developed by Caldera Deutschland named Lizard. This innovation greatly simplified installation—a critical factor influencing distribution choice—and could be launched directly from a Windows partition. The installer continued to receive favorable reviews well after launch.

Industry analyst Hal Plotkin praised Caldera’s product development efforts; OpenLinux garnered several accolades including Linux Journal’s Product of the Year award for 1999.

Additional products and initiatives

Caldera Systems created a variety of Linux enhancements to fill voids left by other commercial providers. In 1999, it introduced the Caldera Open Administration System (COAS), a comprehensive, modular graphical user interface tool for system administration designed to support scalability and compatibility across numerous Linux distributions.

From 1999 through 2001, Caldera was the sponsor of the Webmin project, a web-based Unix management tool, becoming the first Linux distribution to bundle Webmin as a default system administration utility.

As an early adopter of Java technology on Linux, Caldera supported the Blackdown Java project, which offered some of the initial Java ports for the Linux platform. In 2000, Caldera earned a seat on the inaugural Java Community Process (JCP) Executive Committee for Java SE/EE, representing both Linux and open source communities. Following its rebranding to Caldera International, it maintained this position and also championed Java adoption on SCO Unix systems.

Caldera played a role in advancing just-in-time compilation for SCO Unix through Sun’s "Classic JVM." The company took leadership in several Java Specification Requests (JSRs), such as JSR 140 (Service Location Protocol API for Java) and contributed to JSR 48 (WBEM Services Specification), highlighting its influential role in Java development within its sector.

Funding and public offering

Caldera Systems operated at a loss, reporting deficits of $7.9 million against $1.05 million in revenue during 1998, and $9.3 million losses on $3.05 million revenue in 1999. Nevertheless, the surge of investor enthusiasm during the late 1999 "Linux boom" buoyed interest in companies like Red Hat, Cobalt Networks, and VA Linux with notable IPO successes.

On January 10, 2000, three significant developments occurred simultaneously: Caldera settled the Caldera v. Microsoft lawsuit with Microsoft agreeing to pay approximately $280 million; Caldera Systems secured $30 million in private equity funding from investors including Sun Microsystems, Novell, and Citrix to support operations and accelerate Linux adoption; and it announced intentions to pursue an initial public offering. CEO Ransom Love clarified that the Microsoft settlement would not provide direct financial benefit to Caldera Systems beyond resolving brand confusion with Caldera, Inc.

Caldera Systems reincorporated in Delaware on March 6, 2000. Despite favorable product reviews and strong industry partnerships, public recognition remained limited. IDC analyst Dan Kusnetzky observed that most consumers were unfamiliar with the company’s name.

The IPO debuted on March 21, 2000 under ticker CALD. Shares opened at $14 and closed at $29.44 with an intraday peak of $33, raising $70 million and valuing the firm at $1.1 billion. Although this capital raise was successful amid heightened Linux market interest, analysts noted waning enthusiasm as competitors such as Red Hat continued to dominate North America with over half the market share.

Purchase of SCO UNIX

On August 2, 2000, Santa Cruz Operation divested its Server Software and Services Divisions—including UnixWare—to Caldera Systems in a transaction valued between $110 million and $114 million based on Caldera’s stock price. The acquisition was structured with cash, equity, and loans. While SCO was substantially larger with around 900 employees compared to Caldera’s 120, it faced financial difficulties due to competition from Linux. As reported by Forbes, this acquisition provided SCO’s UnixWare software business with a temporary lifeline.

Caldera considered Unix and Linux complementary technologies; SCO Unix targeted back-office and database environments while Linux excelled at networking applications. The deal also brought partnerships with Compaq Computer and IBM, positioning Caldera as the largest Unix license vendor globally. SCO’s broad vertical market applications and involvement in Project Monterey aligned well with Caldera’s strategy for 64-bit computing.

A significant motivator was SCO’s robust reseller network that complemented Caldera’s value-added reseller (VAR) focus aimed at achieving higher margins through free software alternatives to Microsoft Windows NT. The combined channels sought to overcome reseller resistance despite Linux’s superior performance metrics. Industry experts identified this reseller base as the principal asset acquired.

Although concerns existed due to SCO’s recent quarterly loss of $19 million, CEO Ransom Love pledged ongoing support for SCO Unix products post-acquisition. Nonetheless, opposition from parts of the Linux community emerged and licensing constraints prevented full open-sourcing of UnixWare code. Intel notably opposed releasing it as open source, restricting Caldera’s original objectives.

Instead, emphasis was placed on SCO’s Linux Kernel Personality (LKP), which allowed Linux applications to operate natively on UnixWare while improving performance for advanced symmetric multiprocessing systems. This feature offered distinct advantages over native Linux deployments for specific enterprise workloads.

While closing faced delays stemming from SEC inquiries, support organizations merged earlier in the process. In February 2001, the agreement expanded to include SCO OpenServer, involving revenue-sharing modifications and increased cash payments from Caldera. Analysts expressed doubts about managing multiple operating systems under one corporate umbrella.

Financially, Caldera Systems recorded a loss of $39.2 million against revenues of $4.3 million for fiscal year 2000 ending October 31, reflecting ongoing fiscal challenges amid integration efforts.

"Integrating Unix and Linux for Enterprise"

Originally functioning under the umbrella of Caldera, Inc., the company declared at the CeBIT event on March 26, 2001, that it would transition to Caldera International following the acquisition of SCO. The lengthy acquisition process created tensions with several long-established SCO clients and collaborators.

The transaction was completed on May 7, 2001, officially forming Caldera International. Post-merger, the organization retained significant offices in Utah, Santa Cruz (California), Murray Hill (New Jersey), and Watford (England), alongside additional locations spanning 16 countries. Backed by investments from Fujitsu and Hitachi, Caldera launched its Japanese branch, Caldera K.K., headed by Makoto Asoh, thereby broadening its international presence. This expansion capitalized on SCO’s global network—operating in 80 countries—complementing Caldera Systems’ primarily US-based operations.

Adopting the tagline "Unifying Unix with Linux for Business," the company introduced the Caldera Developer Network to offer developers early exposure to UNIX and Linux technologies across multiple platforms.

Caldera International rebranded UnixWare as Open UNIX 8 (corresponding to UnixWare 7.1.2), aligning it with the OpenLinux and Open Server product lines. This rebranding, however, led to customer confusion and compatibility challenges with existing build scripts. Subsequently, The SCO Group reinstated the original UnixWare name with version 7.1.3.

In August 2001, Caldera International took steps toward open source by releasing components of UnixWare’s codebase—including the regular expression parser and essential command utilities—under the GNU General Public License. Additionally, it introduced an "Open Access to Open UNIX 8" initiative that granted developer partners read-only access to unencumbered source code sections.

Despite these efforts, Caldera International confronted a typical business dilemma: managing a mature SCO Unix product line dependent on repeat customers and cloned sites while pursuing growth through Linux adoption. The value-added reseller (VAR) ecosystem posed challenges because former SCO resellers earned substantially more from Unix sales than from Caldera OpenLinux products, reducing their incentive to migrate clients toward Linux solutions. Even those resellers supportive of Linux often favored marketing Red Hat Enterprise Linux over Caldera offerings.

Volution

The Volution initiative was designed to enhance both Linux and Open UNIX 8 by establishing a unified management framework. It consisted of four core elements: Volution Manager, Volution Messaging Server, Volution Online, and Volution Authentication Server, all intended to deliver a seamless user experience. As founder Ransom Love explained, "Volution is a complex and extensive platform."

In January 2001, Caldera Systems introduced Volution Manager—a web-based system administration tool aimed at service providers and enterprise clients. Built upon OpenLDAP and Novell eDirectory technologies, it offered advanced capabilities but initially featured a limited interface and came with a relatively high price point.

By February 2001, Caldera collaborated with Acrylis, Inc., launching a subscription service that allowed system administrators to remotely monitor and update Linux systems while receiving upgrade notifications. This effort aimed to rival Red Hat Network and establish recurring revenue streams. In May 2001, Caldera International acquired Acrylis’s WhatifLinux technology and rebranded the offering as Volution Online.

Caldera also developed Volution Messaging Server—a Linux-based alternative to Microsoft Exchange Server targeting small and medium-sized enterprises. Released in late 2001 for both Caldera OpenLinux and Open UNIX 8 with LKP integration, it included features such as shared calendaring, SSL-secured email support, easy configuration, and Microsoft Outlook compatibility. Despite these functionalities, the product struggled against established Linux mail servers and saw limited traction within business markets.

Drawing on its proficiency in Web-Based Enterprise Management (WBEM) and Kerberos authentication protocols, Caldera International created the Volution Authentication Server. This solution unified authentication management across Unix and Linux systems while integrating with Microsoft Active Directory to address interoperability issues between Windows and Unix environments. Notably, Caldera’s OpenWBEM implementation received the Best Open Source Project Award at the LinuxWorld Conference and Expo in February 2002.

United Linux and ongoing downturn

In June 2001, Caldera OpenLinux 3.1 Workstation introduced licensing based on per-seat usage, which drew criticism from segments of the open source community. Richard Stallman, founder of the Free Software Foundation, referred to Caldera's CEO Ransom Love as "a parasite." In response, Love highlighted his substantial investment in Linux and underscored his commercially focused strategy aimed at enhancing product value.

United Linux emerged in May 2002 as a collaboration between SuSE, Turbolinux, Conectiva, and Caldera International to develop a consolidated enterprise Linux distribution intended to rival Red Hat. The distribution was mainly derived from SuSE Enterprise Linux, with Caldera’s offering rebranded as "Caldera OpenLinux powered by United Linux." The initiative received backing from major hardware manufacturers such as Hewlett-Packard, Intel, and AMD. Nevertheless, industry observers remained doubtful, perceiving United Linux as more of a marketing alliance among struggling vendors than a formidable competitor. Rumors about per-seat licensing further distanced the wider Linux community, although SuSE publicly denied these allegations.

Caldera International experienced a steep financial decline, with combined SCO–Caldera revenues plummeting from $170 million in 1999 to $70 million by 2001. The company reported persistent losses; for instance, in the third quarter of 2001, it recorded an $18.8 million net loss on revenues of $18.9 million. A major asset impairment followed due to overvaluation of acquisitions inherited from SCO. For the fiscal year ending October 31, 2001, Caldera posted a $131.4 million loss on $40.4 million in revenue, which included $98.6 million in write-downs and restructuring expenses. The Linux division was notably unprofitable, expending four dollars for every dollar earned, while Red Hat remained the sole successful Linux vendor.

Caldera’s UnixWare and OpenServer offerings targeted small to medium-sized enterprises and were implemented at retail chains such as CVS Pharmacy, Kmart, Pizza Hut, Pep Boys, and Nasdaq. For example, McDonald's utilized SCO OpenServer at each location to manage point-of-sale data collection and provide corporate connectivity. Shoppers Drug Mart employed Linux Kernel Personality to run SilverStream Software applications atop UnixWare.

The company’s difficulties were intensified by the dot-com crash and early 2000s economic downturn, which reduced IT budgets and dampened investor enthusiasm for money-losing startups. Many customers postponed new acquisitions, negatively affecting SCO’s sales.

Caldera’s share price dropped below one dollar, placing it at risk of NASDAQ delisting. To counter this threat, the firm executed a 1-for-4 reverse stock split in March 2002 and moved its headquarters from Orem to Lindon, Utah. Several rounds of layoffs followed: 32 employees were cut in April 2001; an 8% reduction occurred in September 2001; targeted layoffs took place in Santa Cruz in April 2002; and a broader 15% workforce reduction happened in May 2002 that shuttered offices in Chelmsford, Massachusetts and Erlangen, Germany—previously important development centers—and resulted in CTO Drew Spencer’s exit. The company discontinued its annual Forum conference for the SCO Unix community and replaced it with GeoForum events held internationally.

Despite measures such as the reverse stock split and share repurchase program, Caldera received another NASDAQ delisting warning in June 2002 amid rapidly diminishing cash reserves—enough to sustain operations for less than four months—placing the company in what Wired characterized as "an almost hopeless predicament."

Management transition, rebranding, and strategic realignment

On June 27, 2002, Caldera International named Darl McBride as its new CEO, bringing with him extensive leadership experience from Novell, FranklinCovey, and various startups, succeeding Ransom Love. At the same time, the company reacquired shares previously owned by Tarantella, Inc. and MTI Technology, thereby eliminating royalty payments tied to OpenServer revenues. Meanwhile, Love redirected his efforts toward Caldera's involvement in the United Linux consortium.

Under McBride’s guidance, Caldera International underwent a rebranding on August 26, 2002, adopting the name The SCO Group, signaling a strategic pivot toward Unix-based offerings that constituted the bulk of the company’s income. The official legal formalization of this transition was completed in May 2003.

The company’s principal Linux distribution was renamed from Caldera OpenLinux to "SCO Linux powered by UnitedLinux," with other Caldera product lines receiving comparable updates. The Volution Messaging Server continued under the new brand as SCOoffice Server, while other Volution-related products were divested into separate companies such as Volution Technologies and Vintela.

Early in his leadership period, McBride began investigating claims over proprietary rights to segments of Linux code, despite Love’s earlier advice cautioning against antagonizing the Linux developer community. By October 2002, SCO formalized its intellectual property licensing initiatives, subsequently launching legal actions alleging unauthorized use of Unix intellectual property within Linux and halting sales of its own Linux distribution. This assertive corporate approach triggered the notorious SCO–Linux conflicts and attracted widespread adverse attention from the technology sector.

In a 2003 interview, Ransom Love conceded that there might be contractual bases supporting SCO’s claims but criticized the lawsuit strategy as counterproductive and inconsistent with his own preferred business direction.

Legacy

Caldera significantly influenced the development of Linux by contributing to the creation of a commercially viable, enterprise-focused platform emphasizing reliability and professional support, all built upon the Linux kernel. Alongside industry leaders such as Red Hat and SuSE, it stood as one of the foremost commercial Linux distributions. As highlighted in Rebel Code: Linux and the Open Source Revolution, Caldera Systems' 2000 purchase of SCO Unix—whose origins trace back through Unix System Laboratories and AT&T—represented a critical milestone in Linux's ascendancy over conventional Unix systems.

From a corporate perspective, however, the Caldera acquisition of SCO is frequently regarded unfavorably. In 2016, ZDNet listed this transaction as the ninth worst merger or acquisition within the technology sector. The true commercial triumph among enterprise Linux providers was Red Hat, which strategically positioned itself against Microsoft rather than rivals like Caldera. Red Hat established significant revenue standards for open-source enterprises before being acquired by IBM for $34 billion in 2018.

One important technological offshoot from Caldera International was the Volution Authentication Server. Marketed under the Vintela brand, it achieved notable commercial traction and was purchased by Quest Software for $56.5 million in 2005. Vintela’s solutions subsequently became a core component of Quest’s One Identity portfolio.

Dave Wilson, Vintela’s CEO, recognized Caldera Systems’ foundational role in legitimizing Linux as a serious enterprise technology, noting that numerous former Caldera personnel continue to contribute innovation across multiple organizations.

Products

• Caldera OpenLinux, a Linux distribution augmented with proprietary software elements
• UnixWare, a UNIX operating system originally created by AT&T, Univel, Novell, and The Santa Cruz Operation. UnixWare 7 merged UnixWare 2 with OpenServer 5 and was based on System V Release 5. Subsequent releases carried the OpenUNIX 8 designation.
• SCO OpenServer, a UNIX OS derived from SCO UNIX and XENIX lineages, with OpenServer 6 offering compatibility on an updated SVR5-based kernel.
• Smallfoot, an operating system and development toolkit designed specifically for point of sale application creation
• Volution Manager, a web-based platform for systems administration
• Volution Online, a subscription-based service providing networked Linux system testing and updates
• Volution Messaging Server, an integrated mail and messaging server solution for Linux and Unix environments
• Volution Authentication Server, technology facilitating authentication management for Linux and Unix systems through Microsoft server integration

External links

• Archived web resources for Caldera Systems, Inc. (calderasystems.com), Caldera Holdings, Caldera International, Inc., and The SCO Group (caldera.com and sco.com) documenting key phases from 1999 through 2004.
• Archived websites for LST Software GmbH and Caldera Deutschland GmbH (lst.de and caldera.de) covering European subsidiaries’ activities from 1997 to 2001.