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Transform Excel into Enterprise Software.

Modernize your business without leaving Excel behind.

Request a demo
Workbook.xlsx···
app.nooxl.com
Audit trail
Permissions
More performance
Faster than Excel, especially at large data volumes
3–6 weeks
from first workshop to go-live
More affordable
than typical enterprise or custom software
Secure
GDPR-compliant, GRC-ready & fully documented
The problem

Your business runs on Excel. And Excel is starting to crack.

Monster files that take minutes to open, and sometimes don't. Data scattered across countless copies. Formulas nobody dares to touch. Numbers with no audit trail. It works, until the day it doesn't.

The one person who built the model has no time anymore or is leaving.

The auditors are asking questions about the Excel and the process that you can't answer.

Budget season means three weeks of copy-paste.

You've grown. So has your Excel — in complexity and in number.

Budget_2026_v14_FINAL.xlsx
Portfolio_Model_copy(3).xlsx
Consolidation_DO_NOT_EDIT.xlsx
Forecast_OLD_backup.xlsx
Reporting_v2_new_NEW.xlsx
Today → Tomorrow

The same Excel models. A completely new way to work with them.

Today

Consolidation by hand, every month, from files sent by email

Version confusion, nobody is sure which numbers are current

Key-person risk: one expert holds the whole model in their head

No trail of who changed what, when, hard conversations with auditors

Tomorrow

One governed platform, everyone works on the same numbers from anywhere, right in the browser

Reports that are always up to date, with data from all your files, without a single copy-paste

Your models live in the business, fully documented, not in one person's head

Secure: versioning, database, permissions, workflows, and complete change tracking

Continuing with Excel as before is not a solution!

The transformation

Keep Excel. Rebuild nothing. Gain enterprise governance.

Your workbooks, and the years of thinking inside them, stay exactly as they are. Nooxl Apps turns them into governed, browser-based enterprise software.

01

Excel stays

Your experts keep modeling in Excel. And everything can be exported back to Excel at any time with formulas, formatting and charts, not just values.

02

No Rebuild

No migration project, no re-implementation of your logic in someone else's system. We adapt to your process, never the other way around.

03

Governed enterprise software

Your models become browser-based applications with permissions, workflows, and audit trails, ready for auditors, boards, and growth.

Why Nooxl Apps

There's a smarter way than rebuilding.

Most companies think their only options are living with the Excel chaos or rebuilding everything from scratch. There's a third way.

Swipe to compare all three paths
Keep your existing models
No retraining for your team
Governance, Risk & Compliance
Performance at scale
Analysis across all your files
Secure AI access
Adapts to your requirements
Time to launch
Cost
Business risk during transition
Continue with Excel
status quo
crashes and slows down
manual copy-paste
uncontrolled, in file copies
you're already stuck
Hiddenhigh staff effort
growing every day
Rebuild from scratch
with standard or custom software
starts from zero
depends on the vendor
depends on the vendor
Months
Highlicences, consulting, implementation & migration
High
THE ALTERNATIVE
Nooxl Apps
Turn Excel files into enterprise software
Excel-compatible
work much like in Excel with familiar models
incl. review process
directly with MS Excel PivotTables, MS Power BI, Tableau...
secured & central via Nooxl MCP
as flexible as Excel & extensible
Weeks
Predictablelicences, reuse models or build them in Excel
Lowstep by step
On request, we or one of our partners guide you through the rollout (recommended).
Ready-made apps

Ready for your industry. As adaptable as Excel.

Nooxl Apps also come as ready-made industry solutions: proven modules built from best-practice Excel models, tailored to your organization within days. Because everything runs on Excel, every piece of logic stays transparent, understandable, and adaptable by your own team. Off-the-shelf software that adapts to you, not the other way around.

Real estate

Nooxl Apps for real estate

For project developers, housing companies, asset managers, real estate funds, and banks. From property-level cash flow to balance sheet planning, all modules from one source and ready to be linked together.

Cash flow calculation Lease planning Location & portfolio analysis Developer calculation DCF valuation Balance sheet, P&L & consolidation Acquisition & sales planning Financial planning
Explore the real estate apps
HR & controlling

Nooxl Apps for workforce planning

Headcount and personnel cost planning across departments, locations, and entities, including pay scales and salary grades. One number that HR, controlling, and management agree on, with scenarios instead of Excel versions.

Headcount planning Personnel cost planning Scenarios & forecast Budget approvals Reporting
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Your own Nooxl App

Your industry isn't listed? Then we build your app.

With all of your models, together with our industry specialists. Through rapid prototyping, you see your first working app in days, not months.

Request a demo
Who we built Nooxl Apps for

Enterprise financial modeling in a language everyone understands: Excel.

No black box, no proprietary scripting language. Your business teams model in Excel, and Nooxl Apps turns it into transparent, secure enterprise solutions, including Excel risk management: central storage, versioning, and control over every business-critical file.

Real Estate

Portfolio & asset management, funds, one current view of every asset.

Financial Services

Fund management and planning with full auditability.

Consulting

Client models that scale beyond the partner who built them.

Energy

Budget planning across portfolios, projects, and entities.

Infrastructure

Long-horizon planning with governance your investors expect.

What changes

What changes in day-to-day work.

And one promise behind all of them: we adapt to your process, never the other way around.

Less manual work

Consolidation, distribution, and collection happen on the platform, not in inboxes.

Faster reports

Management reporting on numbers that are current by definition, not by deadline.

Compliance & audit-proof

Every figure traceable to who entered it, when, and why. Auditors get answers, not shrugs.

Security

Permissions decide who sees and edits what, your most sensitive models stop travelling by email.

More productive collaboration

Teams, entities, and partners work on one set of numbers, with workflows instead of reminders.

How it works

From first workshop to go-live, in weeks, not months.

A guided implementation project isn't mandatory, but it's the fastest route. From go-live on, the platform is yours: your team adapts and extends the models on its own, in Excel, without having to ask us. If you'd like, our training courses get your team up to speed.

1

Workbook review

We look at your most business-critical workbook together. No preparation needed on your side.

2

Prototype

Your own model, running as a governed browser application. Real numbers, not a slide deck.

3

Step-by-step rollout

Team by team, process by process. Everyone keeps working in Excel while we transition.

Go-live

One governed platform with permissions, workflows, and a full audit trail. From here on, you extend and adapt it yourself, anytime, in Excel.

Proof

Trusted where the numbers matter.

Selected clients & partners
LBBW Immobilien
Bayerische Hausbau
Deloitte
Gewobag
Münchner Wohnen
LBBW Immobilien
Bayerische Hausbau
Deloitte
Gewobag
Münchner Wohnen
Partners

Not going it alone.

Partnership with Deloitte

Deloitte is a customer, cooperation partner and reseller of Nooxl Apps. Joint implementations with one of the world's leading audit and advisory firms are possible.

Deloitte

Implementation partners

We also work with consulting firms and industry specialists who support on-site rollouts when needed.

Fits your IT

You decide where Nooxl Apps runs.

Hosted by us in the Microsoft Cloud in Europe, in your own cloud, or on-premises in your data center. Same software, same models, your rules. Wherever the server sits, your users only need a browser.

Hosted

Nooxl Apps Cloud on Microsoft Azure, data center location Europe. Get started without your own infrastructure.

Your cloud

Run it in your own environment on Azure, AWS, or a comparable platform.

On-premises

Entirely in your data center, under your control. The standard for our largest customers.

SSO & SQL Server

Sign-in via Microsoft Entra ID / Active Directory. All data in Microsoft SQL Server, directly queryable by your BI tools.

Integration

Not an island. Data in, data out, your way.

Nooxl Apps comes with flexible interfaces that fit into existing system landscapes. Which connections make sense is something we work out together during implementation.

Data in

  • Users import Excel, CSV, or text files, such as market data or yield curves
  • Systems deliver automatically: ERP, property, and accounting systems via database, file, or API

Data out

  • Fully calculating Excel for users, with formulas, formats, and charts
  • Pivot tables and BI dashboards directly on the database
  • Export to consolidation and reporting systems, data lake, or data warehouse

Automation

  • APIs for third-party software and your own scripts
  • Workflow tools like Power Automate trigger runs and collect results
  • AI assistants via MCP, controlled and traceable, see below
AI in Nooxl Apps

AI that works in your models. Not beside them.

Ask your numbers. AI assistants like Claude explain variances, compare scenarios, and make suggestions, in seconds. In Nooxl Apps, they do this directly in your governed environment: with your data, in your models, within your permissions. Those authorized can even let the AI evolve models, in a separate version, with review before release. Every change stays traceable.

Claude · AI assistant
Update the Q3 plan with the new rental income.
Done — changed 2 values in “Plan Q3”. Both changes are documented in the audit trail.
MCP
secure MCP channel
app.nooxl.com
Audit trail
AI · updated “Plan Q3” · 14:32 · v12
M. Weber · approved · 11:05
AI · computed scenario B · 09:47 · v11
T. Fimmel · permissions updated · Mon

MCP (Model Context Protocol): a secure, standardized connection between AI assistants and Nooxl Apps.

Secure MCP access

AI reaches Nooxl Apps only through the controlled channel, within your roles and permissions.

Traceable changes

Who changed what, when, every AI change with audit trail and versioning.

GDPR-compliant operation

Your data stays in your environment, whether cloud in Europe or on-premises, and is never used to train public models.

Membership

Nooxl is a member of KI Park e.V.

A European ecosystem for applied AI, where we exchange ideas with research, industry, and policymakers on how AI can be used responsibly in the enterprise.

KI Park e.V.
Experience AI in Nooxl Apps →
The people behind Nooxl

Every Nooxl Apps implementation is led personally, from first workshop to go-live.

Backed by many years of experience in planning, controlling and IT projects. Complemented, where needed, by industry specialists from our implementation partners.

René Wallat
René Wallatin
CEO
Torsten Fimmel
Torsten Fimmelin
COO

Let's look at your spreadsheets together.

Bring your most business-critical workbook. We'll show you what it looks like as enterprise software, with nothing rebuilt.

Book a workbook review
45 minutes · no preparation needed · EN | DE
NOOXL

Transform Excel into enterprise software, without leaving Excel behind.

Request a demo
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