Services
Custom, Local & Installable Software
When browser-only tools aren’t enough, we engineer cryptographically signed installable software, background OS services, and local on-premise applications for Windows, macOS, and Linux. From air-gapped factory floor systems and LAN databases to fleet-wide endpoint agents like the Denwen RMM Windows Agent, we build software that runs close to the metal.
The challenge
Where most businesses get caught out
Many critical operations cannot rely on public cloud SaaS — whether due to strict data sovereignty, high-latency factory and laboratory environments, direct hardware/serial peripheral control, or deep Windows OS integration. Yet finding a UK software partner who can engineer signed MSI/EXE installers, resilient Windows services, and local LAN/air-gapped software is notoriously difficult.
What is included
What you get with Custom & Local Software
Signed Installable Desktop Applications
Native and cross-platform desktop software (.MSI, .EXE, .DMG, .DEB) cryptographically signed with code-signing certificates for zero SmartScreen warnings.
Local, On-Premise & Air-Gapped Software
Self-contained business software and PostgreSQL/SQLite engines that run 100% on your local LAN or air-gapped servers with zero external cloud dependency.
Windows Services & Endpoint Agents
Low-overhead background daemons and system services for telemetry, automated remediation, hardware monitoring, and policy enforcement — proven by our Denwen RMM Agent.
Silent Fleet Deployment & Auto-Updaters
Single-command silent installers compatible with Microsoft Intune, Group Policy (GPO), and RMM rollout, plus cryptographic delta auto-update channels.
Offline-First Sync & Local Caching
Resilient local-first databases for field engineers, construction sites, and clinics that operate seamlessly offline and sync conflict-free when connectivity returns.
Hardware, Serial, PLC & Peripheral Integration
Direct integration with barcode/RFID scanners, label printers, smartcard readers, medical devices, and industrial Modbus/OPC-UA/PLC controllers.
Cryptographic Command & Data Channels
Every remote command, update package, and local credential vault is cryptographically verified before execution — matching the architecture of rmm.denwen.co.uk.
Legacy Desktop & Access/VB Modernisation
Replace brittle Microsoft Access databases, complex Excel macro systems, and ageing WinForms/VB6 desktop tools with fast, supported local or hybrid software.
How it works
How we get you there
Every engagement starts with a conversation and a look at what you already have. No changes until you have agreed the plan.
Step 1: Environment & Hardware Audit
We inspect your target OS versions (Windows 10/11, Server 2016–2025, Linux, macOS), network topology, peripheral interfaces, and security policies.
Step 2: Systems & Installer Architecture
Design of the local database, background service privileges, cryptographic update mechanism, and silent MSI/Intune packaging.
Step 3: Clean-Room Engineering & Code Signing
Reproducible builds, automated integration testing across virtualised OS estates, and cryptographic binary signing.
Step 4: Pilot Rollout & Lifecycle Support
Staged deployment to pilot machines, telemetry verification, and long-term OS compatibility maintenance.
FAQ
Custom & Local Software questions
Can’t see your question? Call or email us and an engineer will answer it.
Free IT & security review
Find out where your IT is exposed — in 30 minutes
A senior engineer reviews your setup, security and backups, then gives you a plain-English action list. No obligation, no hard sell.