Critical Tools, Inc. is a venerable software developer based in Austin, Texas, specializing in project management visualization tools. Since its founding in the early 1990s, the company has established itself as a niche leader by providing the 'missing visual link' for Microsoft Project users. Their flagship product, WBS Schedule Pro, is the result of decades of refinement, merging two of their most successful tools—WBS Chart Pro and PERT Chart EXPERT—into a single, modern platform. The company has maintained a consistent focus on simplicity and performance, avoiding the trend toward overly complex, high-latency cloud applications in favor of a lean, high-speed Windows native experience. Critical Tools serves a diverse global clientele, ranging from individual consultants to massive government agencies like the US Department of Veterans Affairs, all of whom rely on the software's ability to turn complex project data into clear, actionable diagrams.
Critical Tools, Inc. was founded in 1991 by Jim Spiller in Austin, Texas. Spiller, an expert in project management methodologies, recognized that while Microsoft Project was becoming the industry standard for scheduling, it lacked the visual brainstorming and charting capabilities essential for effective project initiation. The company's first major success came with WBS Chart Pro, which allowed users to 'see' their project outline in a tree structure. This was soon followed by PERT Chart EXPERT, which provided advanced logic and dependency visualization. For over 30 years, the company has remained privately held and founder-led, maintaining its headquarters in the Austin tech hub and sticking to its core mission of simplifying the project planning process through visualization.
Critical Tools, Inc. is a classic example of a successful, bootstrapped software company. It has remained entirely unfunded throughout its 30-plus-year history, eschewing venture capital or external private equity. This financial independence has allowed the company to focus on long-term product stability and customer-driven features rather than aggressive quarterly growth targets. By operating profitably from its early years, Critical Tools has been able to fund all of its product development—including the major migration from separate products to the integrated WBS Schedule Pro suite—entirely through its own revenue streams and license sales. This stability is a key selling point for enterprise and government customers who require long-term vendor reliability.
The company's primary offering is the WBS Schedule Pro software suite, which is available in three distinct editions to meet varying user needs. The 'Complete' version is the full-featured package that provides WBS Charts, Network Charts, Gantt Charts, and Task Sheets, along with full MS Project integration. For users with more specialized needs, the 'WBS Version' offers only the hierarchical charting and planning tools, while the 'PERT Version' focuses exclusively on network diagrams and logical dependency mapping. In addition to the software itself, Critical Tools provides comprehensive maintenance updates and a seamless upgrade path for users moving between editions or upgrading from legacy versions of WBS Chart Pro or PERT Chart EXPERT. The company also offers Enterprise-Wide Site Licenses for large organizations looking to standardize their project visualization tools.
While based in Austin, Texas, Critical Tools has achieved significant global reach through its digital-first distribution model. The software is used in over 100 countries, with major market penetration in North America, Europe, and Australia. Its expansion has been driven largely by its deep compatibility with localized versions of Microsoft Project; the software integrates with MS Project in numerous languages including Chinese (Simplified and Traditional), Japanese, German, French, Spanish, and even Hebrew. This technical flexibility has allowed the company to support international projects and teams without the need for physical satellite offices. The software's ability to scale from small boutique consultancies to large-scale federal agencies has ensured its presence across diverse geographic and industrial sectors.
Recent development cycles for WBS Schedule Pro have focused on maintaining compatibility with the evolving Microsoft ecosystem and improving the user experience within Windows 10 and 11. A major milestone was the release of version 5.1, which introduced a modernized ribbon-style interface and significantly improved the speed of the MS Project integration. The latest updates have added full compatibility with Microsoft Project 2021 and Project 2024, as well as enhanced support for High DPI displays to ensure charts remain crisp on modern high-resolution monitors. Other recent enhancements include improved Excel import/export routines, more flexible 'Notes' field handling when linked to Project, and updated printing engines that better handle the complex scaling required for massive, multi-page project diagrams.
Critical Tools maintains a culture of technical excellence and customer-centricity. As a small, privately-held firm, the company avoids the bureaucracy typical of large software corporations, allowing for direct communication between the development team and the user base. This lean structure fosters a high degree of accountability; feedback from project managers on the ground often finds its way into the next product revision. The work environment is focused on long-term sustainability and quality over speed, which is reflected in the product's reputation for being bug-free and highly reliable. The company values its long-term relationships with customers, many of whom have been using Critical Tools products since the 1990s, and its culture is geared toward supporting these legacy users while adapting to modern project management needs.
The WBS Schedule Pro community consists of a global network of professional project managers, PMPs, and consultants. While the company does not host a traditional social forum, it maintains a robust online presence through its extensive Customer Portal, where users can access training resources, version updates, and a comprehensive knowledge base. The software is a staple in project management certification courses and is frequently cited in textbooks and academic curricula as the standard tool for teaching Work Breakdown Structures. Users often share templates and 'best practice' chart layouts through various professional PM forums and LinkedIn groups. Additionally, Critical Tools supports its community through highly responsive direct email support, often provided by senior technical staff who have deep expertise in both the software and project management theory.
WBS Schedule Pro
By Critical Tools, Inc.
