What stays
We retain agreed workflows, important business rules and data.
Legacy software modernization
Your legacy software still works. But no one can maintain it anymore?
We rebuild outdated business applications on modern technology while preserving familiar screens, critical workflows and essential business logic. In many cases, we can begin even when the original source code is no longer available.
Does this sound familiar?
- 01Your business relies on a custom application developed 10–20 years ago.
- 02The original developer is unavailable.
- 03The software depends on aging infrastructure, new integrations are difficult, and replacing it would force employees to relearn processes they already know by heart.
Modern technology. Familiar way of working.
We do not start by asking your team to adopt a completely different system. We first study how your application is used and which interactions matter most. We aim to preserve screen layouts, navigation, tables, keyboard shortcuts and daily workflows wherever practical.
Illustrative demonstration
| No. | Date | Client | City | Amount, € | Status |
|---|---|---|---|---|---|
| 1046 | 2026-11-08 | Trial Agro Ltd | Stara Zagora | 1,735.40 | Confirmed |
| 1045 | 2026-11-07 | Mockup Build Ltd | Burgas | 5,120.00 | New |
| 1044 | 2026-11-06 | Demo Trade Ltd | Varna | 2,415.00 | Confirmed |
| 1043 | 2026-11-05 | Test Logistics Inc | Ruse | 980.00 | New |
| 1042 | 2026-11-04 | Sample Co | Plovdiv | 3,860.50 | Shipped |
| 1041 | 2026-11-03 | Example Ltd | Sofia | 1,240.00 | Paid |
| Total (6 orders) | 15,350.90 |
Order No. 1044
- Client
- Demo Trade Ltd
- Date
- 2026-11-06
- Delivery
- Varna, warehouse 2
- Status
- Confirmed
- Amount, €
- 2,415.00
| No. | Date | Client | City | Amount, € | Status |
|---|---|---|---|---|---|
| 1046 | 2026-11-08 | Trial Agro Ltd | Stara Zagora | 1,735.40 | Confirmed |
| 1045 | 2026-11-07 | Mockup Build Ltd | Burgas | 5,120.00 | New |
| 1044 | 2026-11-06 | Demo Trade Ltd | Varna | 2,415.00 | Confirmed |
| 1043 | 2026-11-05 | Test Logistics Inc | Ruse | 980.00 | New |
| 1042 | 2026-11-04 | Sample Co | Plovdiv | 3,860.50 | Shipped |
| 1041 | 2026-11-03 | Example Ltd | Sofia | 1,240.00 | Paid |
| Total (6 orders) | 15,350.90 |
Order No. 1044
- Client
- Demo Trade Ltd
- Date
- 2026-11-06
- Delivery
- Varna, warehouse 2
- Status
- Confirmed
- Amount, €
- 2,415.00
Illustrative demonstration with invented data, not a client project. The same Orders screen is shown in an old desktop application and on a modern web foundation. The columns, the sorting, the edit form, the report total and the F2, F4 and F9 keys stay in the same places. The visual and technical foundation is what changes.
What stays — and what changes
What changes
We replace outdated foundations with a maintainable architecture, documented code, tests and a clear path for future integrations and improvements.
No source code? That does not necessarily mean starting from zero.
With an operational installation and authorized access to the relevant data, we can often examine how a legacy application behaves. We map screens, database structures, user actions and observable outcomes to establish a verifiable specification.
A technical assessment defines what can be reconstructed reliably and where uncertainty remains.
Our process
- 01
Initial feasibility assessment
Understand the system, access, risks and constraints.
- 02
Legacy discovery
Map workflows, screens, data, dependencies and edge cases.
- 03
Representative prototype
Validate a new implementation with a familiar interface.
- 04
Development and verification
Rebuild agreed features and compare observable results.
- 05
Controlled migration
Test data transfer, backups, rollout and operational readiness.
What do you get after the initial technical analysis?
- A clear picture of the system and its main dependencies
- a confirmed and an unconfirmed functional scope
- the main risks
- a recommended approach (gradual replacement or full reconstruction)
- an indicative plan and a proposal for the next step.
Frequently asked questions
Can you rebuild our system if we don't have the source code?
In many cases, it is possible to recreate its key functions if you have a working installation and the necessary authorized access to its data and everyday workflows. What can be rebuilt is determined after a technical assessment, and not every function can be identified automatically.
Will the interface stay the same?
We aim to keep the familiar layout, navigation, shortcuts and everyday working habits. Some agreed changes may be needed for security, accessibility or technical reasons.
Will we lose our data?
We work with a planned migration, backups, test transfers and consistency checks. The exact plan depends on how your data is structured and on its condition.
Do we have to stop working during the project?
Development can usually happen separately from your production system. The final switchover may need a window for synchronization or downtime, which is planned in advance.
What if the original developer is no longer available?
We can assess the system from the installed application, its infrastructure, data and documentation, and from what your users know. The rights and conditions for analyzing and replacing it are checked in advance.
How long will it take and what will it cost?
It depends on the number of modules, hidden logic, integrations and data quality. After the first conversation, we propose a technical assessment that a realistic plan is built on.
Do we have to move to the cloud?
Not necessarily. The architecture is chosen based on security, infrastructure, integrations, offline needs and budget. On-premises, cloud and hybrid solutions are all possible.
Can the modernization be done in stages?
Yes, when the existing system and its integrations allow it. In other cases, a separately built system with a controlled rollout is the safer choice.
Keep what works. Replace what holds you back.
Tell us what your existing application does and where it is becoming a risk. We will discuss whether it can be rebuilt and how to approach the transition without unnecessary disruption.
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