What does a client portal cost in 2026? Honest price bands
Client portal price bands for 2026: from 15,000 euros for an MVP to 150,000+. What drives cost and how to calculate ROI.
Jordan Munk22 Jul 2026 · 11 min read
Insights On Workflows,
Automation, And Execution
Insights, updates, and practical thinking on building modern workflows, automating execution, and using AI to reduce operational friction.
All articles
Dutch Cybersecurity Act: requirements your clients will push
From 15 August 2026, in-scope clients push MFA, logging and incident SLAs onto suppliers. What you must be able to prove.
Sidney de Geus22 Jul 2026 · 12 min read
Functional design template for custom software
Practical FD template for custom software: chapters, acceptance criteria, and how to prevent scope creep before build starts.
Jordan Munk22 Jul 2026 · 11 min read
WordPress wp2shell: why a default CMS can be a security risk
Emergency patches for wp2shell, a pre-auth RCE in WordPress core. What it means for your business and when headless or custom is safer.
Sidney de Geus22 Jul 2026 · 11 min read
The Dutch Tax Authority Is Enforcing False Self-Employment Rules: What It Means for Software Hiring
Since 2026 the Dutch tax authority can impose penalty fines for false self-employment, with back taxes to January 1, 2025. Why long-term freelance developers are a risk profile and how to get software built without DBA worries.
Jordan Munk7 Jul 2026 · 9 min read
AI Agents Are Putting the SaaS Model Under Pressure: What Gartner Sees and What to Do
Gartner warns that AI agents threaten up to $234 billion in SaaS spending through agentic arbitrage. What that means for companies choosing software now, viewed soberly from our build practice.
Sidney de Geus7 Jul 2026 · 8 min read
Mandatory E-Invoicing Is Coming: What SMEs Need to Know About ViDA Now
The Dutch government decides this summer whether e-invoicing becomes mandatory for domestic B2B invoices. What ViDA, Peppol and EN16931 mean for your administration and software, and which steps to take now.
Jordan Munk7 Jul 2026 · 9 min read
Integrating Exact Online With Your Own Software: When, How and What It Costs
A practical guide to an Exact Online integration: when it pays off, what is technically possible via the REST API, OAuth 2.0, pitfalls and what an integration costs.
Sidney de Geus15 Jun 2026 · 10 min read
What Does Custom Software Maintenance Cost Per Year?
An honest view of custom software maintenance costs: the 15 to 20 percent rule of thumb, what maintenance covers, retainer models and what happens if you skip it.
Jordan Munk15 Jun 2026 · 10 min read
Mollie or Stripe for Your Platform: An Honest Comparison
Mollie or Stripe for your webshop, SaaS or platform? A practical comparison on iDEAL, subscriptions, international growth and marketplaces, from our build practice.
Sidney de Geus15 Jun 2026 · 9 min read
Building an AI Agent for Your Business Processes: What Works in 2026
In 2026 AI agents go beyond a chatbot: they perform tasks inside your systems. What makes an agent different from a chatbot, why MCP and context engineering are the turning point, and how to have a reliable AI agent built for your business processes.
Jordan Munk29 May 2026 · 13 min read
Digitalisation Subsidies 2026: How to Partly Fund Custom Software
In 2026 several Dutch subsidies partly cover custom software and digitalisation, from the Sprint subsidy to the JTF scheme and the WBSO tax incentive. Which schemes cover software, how a digitalisation advisory works, and how to set up a subsidy-eligible project.
Jordan Munk26 May 2026 · 12 min read
12 of 77 articles
This page lists 77 articles on custom software, AI tooling and development workflows. They are written from inside live projects at MG Software in Haarlem, not from research papers or hyped twitter threads. Each piece starts with a concrete question we recently hit in a client call or pull request, and ends with a decision we actually shipped (including trade-offs that turned out worse than expected).
Current breakdown: 19pieces on AI & automation (Cursor, Claude Code, MCP, agentic coding), 27 engineering deep-dives (Next.js 16, Postgres, Supabase, Three.js patterns), 13 workflow guides for founders and PMs, and 18 updates on Refront and client work. Filter via the tabs above, or subscribe to the RSS feed to get each new post automatically. No newsletter popups, no tracking pixels, no affiliate links.
How we run this blog
Every post is written by Jordan Munk or Sidney de Geus, both co-founders of MG Software. We publish around two pieces a week and stick to three rules: the topic comes from a real project (not from an AI-generated topic list), numbers and screenshots are our own material or linked to a primary source, and when we are uncertain about something we write that down instead of implying a stronger claim than we can defend.
The content tracks what we build day to day. In Q4 2025 our stack moved from the Vercel AI SDK to Anthropic Claude Code for server-side agents, and that transition is documented in a series on agentic patterns, MCP tooling and code review. For productive refactors we have used Cursor 2.0 with composer-2-fast as the default model since early 2026. What we learn in those migrations lands here directly, so you can read along before you need to make the same call.
Want to suggest a topic?
Missing a post on a specific tool, framework or architectural decision? Email info@mgsoftware.nl with the question or frustration, and if it fits our experience we will add it to the queue. Posts are never bought or sponsored; we can only write about what we have built ourselves or evaluated thoroughly.
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