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OOTI
OOTI is practice management software for architecture, interior design and engineering firms. It brings opportunities, projects, time tracking, fee budgets, resource planning and invoicing into one platform, replacing the spreadsheets many studios use to run the business side of practice. Partners and office managers see project profitability and workload in real time, while staff log hours against phases. Founded in Paris in 2017, OOTI serves more than 900 firms and is now part of Milient Software.
Categories
Project ManagementAccounting and PaymentCRM (Customer relationship management)
OOTI Overview
OOTI is a business management platform (often described as an ERP) built for architecture and engineering practices. It connects the commercial side of a firm, from leads to fee proposals, with day-to-day delivery and billing, so leaders can see which projects make money and where the team's time goes. It was founded in 2017 by Maxime Riahi and is based in the Paris region.
Key features
- Opportunity management – track leads, assign win probabilities and convert them into projects
- Project and phase tracking – monitor phases, deadlines, collaborators and task priorities
- Time and budget tracking – log hours by phase and compare them against fee budgets to catch overruns early
- Resource planning – view team availability and workload across projects
- Invoicing – bill by phase, handle co-contractors and generate branded PDF invoices
- Financial dashboards – see revenue, costs and profitability at firm and project level
- API – connect OOTI data to other tools
Who it's for
OOTI suits architecture studios, interior design practices and engineering offices, from small teams to firms with dozens of staff, that want one system for fees, time and billing. It is used mostly in France and continental Europe, with a sales presence in Canada. A 14-day free trial is available, and firms with five or more users get a custom quote.
Company
OOTI reported more than 900 client firms and about 3.1 million euros in annual subscription revenue in 2025. It was acquired by Milient Software, a Nordic provider of project and time management software for consultancies, with founder Maxime Riahi remaining involved in the business.
OOTI is a business management platform (often described as an ERP) built for architecture and engineering practices. It connects the commercial side of a firm, from leads to fee proposals, with day-to-day delivery and billing, so leaders can see which projects make money and where the team's time goes. It was founded in 2017 by Maxime Riahi and is based in the Paris region.
Key features
- Opportunity management – track leads, assign win probabilities and convert them into projects
- Project and phase tracking – monitor phases, deadlines, collaborators and task priorities
- Time and budget tracking – log hours by phase and compare them against fee budgets to catch overruns early
- Resource planning – view team availability and workload across projects
- Invoicing – bill by phase, handle co-contractors and generate branded PDF invoices
- Financial dashboards – see revenue, costs and profitability at firm and project level
- API – connect OOTI data to other tools
Who it's for
OOTI suits architecture studios, interior design practices and engineering offices, from small teams to firms with dozens of staff, that want one system for fees, time and billing. It is used mostly in France and continental Europe, with a sales presence in Canada. A 14-day free trial is available, and firms with five or more users get a custom quote.
Company
OOTI reported more than 900 client firms and about 3.1 million euros in annual subscription revenue in 2025. It was acquired by Milient Software, a Nordic provider of project and time management software for consultancies, with founder Maxime Riahi remaining involved in the business.
OOTI Pricing
PRICING PLANS
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Gallery
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OOTI Alternatives
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BQE CORE
An All-in-one Firm Management platform designed by architects and engineers for architects and engineers, to streamline firm operations by automating project management, accounting, time tracking, billing, resource management, and more, enabling firms to focus on serving clients while improving profitability and performance analysis.
WyattERP
WyattERP is an agentic AI platform for AEC and GovCon firms. Describe what you need in plain language and its agents build it—custom apps, automated workflows, and live dashboards—all with native access to your project, financial, and time data. Specialized agents handle timekeeping, accounts payable, financial analysis, project tracking, and more, while enterprise-grade security keeps your data isolated and protected. Less time wiring up systems and chasing reports, more time building. WyattERP turns the data and systems you already have into working software, on demand.
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