The project-based business world is consistently evolving, especially within architecture, engineering, and construction firms. Choosing the right software is no longer a luxury but a necessity. Firms struggling with shifting scopes, field work, multiple stakeholders, and tight budgets need digital platforms that can keep pace with the way they deliver their work.
This is why many AEC companies. Moving away from rigid legacy tools and toward modern B2B SaaS platforms designed to offer real-time visibility, project-centric financials, and seamless resource management.
Below, we run through seven of the best SaaS platforms supporting project-based organizations in 2025. Whether you’re in AEC Consulting or another professional service, these resolutions empower your team with smarter tools for planning, execution, and growth.
Unit4
Best for: Financial visibility and cost control in complex project environments
Unit4 leads the list for firms in architecture, engineering, and construction. Those who need a robust system for project-based financial control will be happy with this particular piece of software. Its standout strength lies in giving architectural and engineering firms the tools they need to understand real-time costs versus original estimates. These estimates go across fees, materials, subcontractors, and more.
Unit4 enables project-centric accounting, helping users to manage budget forecasting and revenue recognition aligned with contract milestones. This means that your financial reports are more accurate and useful for decision-making. It’s especially useful for firms facing shifting project scopes or frequent client change requests, thanks to flexibility in modifying workflows and budgets without heavy customisation.
Combine this with powerful resource planning, field work capabilities, and mobile-friendly interfaces, and you’ve got a platform that keeps your overhead low while keeping your team’s focus on delivery and design, which is right where their expertise matters the most.
PSOhub
Best for: Automating project management for small-to-mid professional services
PSOhub is an ideal choice for smaller AEC or consulting firms that want to automate time tracking, project management, and budgeting without the need for a full-blown ERP system. It works to integrate seamlessly with HubSpot, making it perfect for firms that want to connect their CRM, invoicing, and project planning into one workflow. Smart automation features such as self-driving, time tracking, and contractor project conversion help to reduce the admin burden and keep small teams focused on client work.
Unanet
Best for: Government contractors and compliance-driven firms
Unanet serves firms that operate in compliance-heavy environments such as government contracting, defense, and engineering. Its platform covers project accounting, resource management, and time and expense tracking, all while staying aligned with complex reporting requirements.
Firms that work under regulations like DCAA or FAR find Unanet invaluable. The software’s audit-ready architecture means that finance and project managers can trust their data and focus more on strategy and delivery.
Projector PSA
Best for: Improving billability and resource utilization
Projector PSA focuses on helping consulting and professional services firms track performance metrics like billable utilization, project profitability, and resource allocation. Modular dashboards give decision makers insight into how their workforce is being used and where they may be slipping through the cracks.
Projector also integrates with accounting platforms such as QuickBooks and NetSuite, which offer a comprehensive view from frontline delivery all the way through to financial close. Its simple user interface and role-based access make it easy for teams to adopt.
FunctionFox
Best for: Creative and small agency project tracking
FunctionFox is a user-friendly solution that is aimed at creative teams that are smaller design firms and boutique agencies. What makes it effective is its time tracking and project scheduling tools that don’t require hours of onboarding to master.
It includes tools for assignments, budget tracking, and timesheet approvals, which allows all creative professionals to spend more time producing and less time on admin. It’s especially helpful for tracking multiple clients and campaigns simultaneously.
VOGSY
Best for: Google Workspace users needing PSA functionality
VOGSY is a professional services automation tool that works natively within Google Workspace. This makes it ideal for architectural, engineering, and consulting firms already built around Google tools.
It connects your G Drive, Gmail, and Google Sheets with project tracking, budgeting, invoicing, and resource planning. The USP here is simplicity. VOGSY brings enterprise-level reporting into a Google native interface. Mid-sized professional service firms benefit the most, especially if they’re scaling and want to avoid bloated legacy software.
Mavenlink by Kantata
Best for: Managing project lifecycle from proposal to payment
Mavenlink is now a part of Kantata, and they provide an end-to-end platform for managing everything from client proposals to allocating resources and project delivery. Its strength lies in real-time collaboration, performance tracking, and the ability to forecast project margins before you get started.
It is best suited for medium to large professional service firms that need to optimize margins across multiple projects and teams. Mavenlink’s analytics helps leaders to proactively address overutilization or project slippage before it hits the bottom line.
Conclusion
Project-based firms, from architectural and engineering to consultancy and beyond, need tools that deliver more than simple task tracking. They require integrated intelligence systems that offer real-time insights, flexibility, and automation across the full life cycle of a project.
For architecture and engineering firms in particular, Unit4 delivers a purpose-built solution. By focusing on project-centric cost control, resource management, and mobile fieldwork capabilities, Unit4 enables smarter decisions, faster invoicing, and fewer admin headaches.
Still, there is no one-size-fits-all solution. Firms have to consider their size, regulatory environment, existing tools, and desired outcomes. Whether you’re a smaller agency or a global firm, the right B2B SaaS platform helps you to do what you do best. Deliver excellent work on time and within budget. Look to evaluate your processes, involve your teams, and make sure that you look ahead to which software you need the most.