Go OS/
State-of-the-art
ERP agency software
OS/ is the next-generation, best-of-breed solution that radically simplifies project budgeting and controlling.
You can see at a glance where you stand financially and transform hours of spreadsheet work into workflows that take just minutes.
This saves you valuable time in your daily work and finally frees up your mind to focus on your customers and projects.
More than 1,000 industry professionals already rely on OS/ for their project controlling.
The right tool for every task simply makes sense and saves everyone a lot of time.
Moritz von SchrötterManaging Director, Parasol Island GmbH
Free 6-week trial
Try OS/ for free with no obligation — with your entire team, full access to all features, and free support...
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The game changer for project costing and controlling
Get everything you need for a perfect project ERP in one place.
OS/ AI
Ask anything. Get everything done.
Ask OS/AI anything about your agency: How are we tracking against the forecast? Which projects risk going over budget? You get a ready-made analysis instead of raw data.
And OS/AI doesn't just answer—it acts: calculating, creating projects, checking proposals against the briefing, building scenarios, generating reports. Your co-pilot with access to what matters most.
More about OS/ AI
Key figures
Simply perfect project metrics
Give your account and project managers a calculation tool they'll love, and they'll thank you with up-to-date project metrics.
With OS/, you can create even complex project calculations in just a few minutes using drag & drop, keep your project revenues, costs, and agency resources under control while calculating, and juggle multiple projects with ease.
More about project key figures
Project calculation
Calculating at the next level
With drag & drop, you can easily and flexibly calculate even the most short-term customer requests. Service catalog, customer price lists, offer options, service module or offer templates, additional costs, or flat-rate offers: everything is possible.
Calculating with OS/ is so quick and easy, and you'll have more fun, higher quality, and more time for what's important...
Projektcontrolling
Track project costs and progress at a glance
With OS/, you can compare your calculations with actual values in real time at any time, so you can immediately see if a project is not going as you expected. You can maintain full cost control without spending a lot of time and ensure that you deliver your projects on time and within budget to avoid unpleasant surprises at the end of the project.
Forecast
Reading your profitability like a BWA
Forget static Excel lists. The OS/Forecast Report translates your project business directly into a business analysis. This allows you to keep track of your company's financial success in real time and manage your agency based on real data instead of vague estimates.
More about Forecast & Reports
Settlement
Click, click, settled...
Calculating your projects is just as easy as calculating your costs. Simply select all services to be invoiced from the budget overview or create advance invoices and final invoices with a single click. Want to invoice external costs or working hours? It's just as easy, and you can even do it on the same invoice if you want.
Wähle einfach aus der Budgetübersicht alle abzurechnenden Leistungen aus oder erstelle Akontorechnungen und Endabrechnungen mit einem Klick.
Fremdkosten oder Arbeitszeit abrechnen? Das geht genau so einfach, wenn du möchtest, sogar auf der gleichen Rechnung.
More about project settlement
Why our customers love OS/
Easy to use and implement
OS/ can be integrated into your company with remarkable ease. While the intuitive interface immediately saves your project managers time, everything remains the same for the rest of the team: times are recorded without changing systems, simply via voice input in my OS/ or directly in awork.
And if you do encounter any issues, our Customer Success Team guarantees support in under three minutes.
Thorough project finances
Our customers confirm: No other software thinks as entrepreneurially as OS/.
We are convinced that precise project finances form the foundation for your sustainable success. Do you agree? Then it's time you got to know OS/.
Excellent accounting integrations
Don't experiment with your finances. OS/ offers you the perfect symbiosis of technology and expertise: seamless integrations for DATEV, Pleo, and Qonto, as well as support from tax specialists.
GoBD, GDPR, ZUGFeRD: everything on board. Our benchmark: 8,500 receipts per year with only 1 FTE.
my OS/ is the app that understands you
On the go or in the office: simply dictate or write down what you need help with—my OS/ will take care of the rest.
From smart project management to time tracking, OS/ is your agency software app that understands you.
Combine the best of all worlds
At OS/, we believe that every company should use its perfect software ecosystem instead of settling for the compromise of an all-in-one solution.
Discover our integrations or request a personalized demo to see how perfectly OS/ works with your preferred tools.
Can't find the solution you need? No problem, let's talk!
What OMR users say about OS/ agency software
This is how independent OMR users rate OS/.
Agency software: Finally, an AI integration that’s been thought through from start to finish.
OS/Al is by far the most comprehensive and effective integration of AI into agency software that I know of. It has significantly streamlined our entire proposal-writing process as a digital marketing consultancy.
“Eine Software, die sich auf sauberes Projekt-Controlling mit smarten Schnittstellen fokussiert.”
"Viele Anbieter versuchen alles in einer Lösung abzubilden. Dadurch werden sie schwerfällig und verlieren ihr klares Profil. OS/ hat einen klaren Fokus, der nah an den Kunden-Bedürfnissen ständig optimiert wird. Unsere Ansprechpartnerin Julia denkt sich außerdem super schnell in unsere Prozesse ein und liefert hilfreiche Hacks. Features, die aktuell noch nicht Teil der Lösung sind, kommen auf eine Roadmap. So gestalten wir die Entwicklung auch in unserem Sinne aktiv mit."
“Intuitive und praxisnahe Software”
"Sehr übersichtliches und intuitives Tool – besonders das Drag-&-Drop bei Projekten macht die Arbeit richtig angenehm. Die Eingangsrechnungsverarbeitung läuft super zuverlässig, und die Integration mit awork und DATEV funktioniert reibungslos. Das System wird laufend weiterentwickelt – neue Funktionen kommen regelmäßig und bringen echten Mehrwert."
"Endlich ein Tool, das meine Controlling Schmerzen lindert"
"OS/ bietet mir ein übersichtliches Projektcontrolling mit der gewünschten Detailtiefe. Zusätzlich sind Angebots- und Rechnungsstellung sehr simpel und schnell. Das Konstentracking (auch über externe Tools) für Projekte funktioniert sehr gut, so dass ich zu jeder Zeit volle Budgetkontrolle und Einsicht über unsere Projekte erhalte. Unser Workflow hat sich von der Projekterstellung über das Controlling, bis hin zum Projektabschluss und unserer Buchhaltung deutlich verbessert. Mehr Kontrolle & Einsicht bei parallel weniger Aufwand."
"Mir gefällt der Ansatz, das os/ keine all-in-one Lösung sein möchte sondern sich stattdessen darauf fokussiert solide Schnittstellen für einen überschaubaren Tool-Stack anzubieten und so für einfache und effektive Workflows zu sorgen."
"Klare Struktur, starke Features, mega Team"
"OS ist extrem gut durchdacht, bleibt immer übersichtlich, ist klar strukturiert und hat einen klaren Fokus: Transparente Projekt- und Agentur-Controlling in Echtzeit. Bei weitem das beste ERP-System, dass wir seit mehr als einem Jahrzehnt gesehen haben. Zudem lobend zu erwähnen: das mega Team hinter OS, das wirklich an Feedback und Weiterentwicklung interessiert ist."
“OS/ helps us to keep an overview”
"Creating and managing projects, including preparing quotations - Tracking times for projects and the associated budget analyses - The options for hiring team members"
“OS/ is great, makes my calculations faster and easier to control. A great tool!”
"The software is incredibly fast and easy to use. I can use it to create calculations within a very short time and work on them synchronously with colleagues. The way the controlling is structured is also very helpful. You can rely on being able to see a precise actual status of the project and get an outlook on how the project will be completed."
“OS simplifies our everyday life enormously”
"From clear resource planning to detailed budget planning & controlling. The drag & drop function of all elements also makes it very user-friendly and quick to edit."
“Top software for transparent project controlling”
"OS/ offers the possibility of precise project controlling - recorded hours & supplier invoices reduce the revenue of the respective project. Incoming invoices can be entered using drag & drop and the software also offers full resource planning and time recording - a real game changer!"
“OS/ has enabled us to really measure our project performance.”
"The enormous simplicity of OS/ - it didn't take a day to familiarize ourselves with it and set up the relevant employee accounts. This simplicity has enabled us to ensure that everyone tracks their project times properly and that we can keep track of our project performance. The support is also incredibly fast - questions are answered in no time at all, even at the weekend."
“Specialized agency software for controlling projects and finances”
"User-friendly operation, intuitive design and simple but precise visualization of projects. In addition, the software has hardly any bugs and simply works. I also particularly like the calculation of resource costs and visualization of how it affects projects."
“A real relief in everyday agency life!”
"314OS is an absolute game changer for us!
The software is very easy to use, clearly structured and provides us with excellent support for budgeting and project planning. As someone from the accounting department, I particularly appreciate the seamless connection to Pleo and DATEV - this saves an enormous amount of time and reduces sources of error. The customer service is also great: always friendly, competent and quick to get in touch if there are any questions or minor problems. A real highlight: you can register for training courses on individual topics free of charge, which makes it extremely easy to get started and deepen your knowledge. For us, everything is just right: functionality, user-friendliness and value for money. A clear recommendation for all agencies that want to work more efficiently and in a more structured way!"
Known from leading industry magazines
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Your data is in safe hands.
Enterprise-Security
At OS/, we take the protection of your data very seriously.
Security and reliability are ensured by regular backups and ongoing checks and optimizations of our infrastructure by the renowned SySS GmbH.
Enterprise-Grade-Hosting
We rely on professional hosting and high-quality infrastructure products from AWS, the undisputed market leader.
TISAX® Ready
Thanks to our professional data protection and IT security principles, OS/ meets the strict requirements for use in TISAX®-certified companies.
GoBD & DSGVO
OS/ is GoBD-certified, and our platform is fully compliant with EU data protection laws.
You can find details in our data protection section.
Privacy policy
Is OS/ right for you? Let's find out.
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