
Secure Requirements Management Software for Mission-Critical Systems
Next generation requirements management software delivered by Stell meets the needs of highly-complex and regulated industries. Crafted by aerospace engineers, Stell can transform static documentation into actionable workflows, all while focusing on U.S.-based security, cross-team collaboration, and cutting-edge simplicity.

Why Aerospace Teams Choose STELL Over Legacy Tools
Aerospace engineers teamed together to create a platform for simplifying the chaos of traditional tools. Stell can transform long and highly-technical specifications into a collaborative and trackable workflow. Stell helps teams across industries avoid missing requirements and reduce risk, all while ensuring on-time delivery to customers. Engineering tools built for the next generation should not only be powerful, but also collaborative and user-friendly – a principle Stell was founded upon.
Document-to-Matrix Workflow
Toggle quickly between original documents and a dynamic compliance matrix with Stell’s dual-view system. You will never miss a clause with Stell because our platform highlights every requirement and links standards automatically and quickly. Stell’s powerful text search tool enables rapid identification of key phrases across specifications, standards libraries, manuals, and other statements of work effortlessly.
PDF Import Revolution
Stell enables instant conversion of sizable technical contracts into interactive and beautiful compliance matrices. No other requirements management tool on the market can automatically import and digitize PDF specifications. Stell saves engineers hours of manual work and enables cross-team collaboration from day one.
US-Based & Secure
Stell implements a defense-in-depth approach meeting stringent government security requirements including SOC 2 Type 2 certification and NIST 800-171 compliance. Our platform supports the handling, storage, and transmission of Controlled Unclassified Information (CUI) in accordance with DoD and NIST standards, with a FedRAMP High ATO in progress under U.S. Space Force sponsorship. Stell enables secure in-app collaboration between teams, preserving an audit trail of all actions taken by users to ensure complete accountability and traceability across your data. Stell also seamlessly preserves an audit trail for all changes, all within a single compliant platform. Learn more about our cybersecurity.
Hardware-First Design
Stell doesn’t just treat requirements as an audit trail like generic software. Stell boosts connection between business development, program managers, and systems engineers all within one platform. Specifically architected for systems engineering and compliance in high-stakes industries, Stell uniquely aligns customers and suppliers at every step, providing real-time collaboration on all your technical documents.

The ROI of Modern Requirements Management Tools
Avoid costly mistakes, reduce risk, and save time. Stell improves collaboration and audit readiness simultaneously.
Stop Costly Compliance Errors
Stell helps prevent “One-Million Dollar Mistakes” by scanning for hidden standards and requirements from the start. Stell helps prevent scope creep and ensures accuracy throughout a program’s lifecycle by preserving requirements and documents early.
Preserve Critical Knowledge
Critical team members moving on to other avenues should not let knowledge walk out the door. Stell tracks past compliance strategies and is highly traceable, ensuring that information is retained and can be reused for faster future projects and proposals.
Accelerate Operational Efficiency
Stell effortlessly automates the process of cross-team and cross-platform collaboration, so no more cutting and pasting between Word and Excel. Stell makes it easy to find anything you need, on demand.
Ensure Audit Readiness
Stell’s highly-traceable platform and matrices help you demonstrate compliance during customer audits and reviews. Nothing can fall through the cracks with built-in parent-child linking and verification evidence tracking.
The Modern Solution to Outdated Engineering Workflow
Stell features a clean, intuitive, and user-friendly platform that substitutes siloed tools, outdated software, and manual workarounds. Built for team-wide adoption, Stell is intuitively built to assist with revision control, traceability, and secure collaboration.
Stell can replace complex and siloed requirements management tools. Stell’s simple and delightful UI/UX will have your team collaborating on requirements instead of sending documents to one super-user engineer. Stell can also replace workarounds like Excel and Word to add collaboration, revision control, change control, and complex linking.

Industry Veterans, Next-Generation Requirements Management
We’ve seen it all. As engineers who have experienced the pain of traditional tools, we crafted Stell to ease the burden of paperwork and innovation on excel. Stell puts engineers first with real-time collaboration and instant compliance matrices, all backed by built-in security.