SEO Meta Description: Discover how Simplex’s low-code SDK empowers you to automate legacy portals quickly, securely, and at scale with web agents and headless browser capabilities.

The Legacy Portal Dilemma

Many organisations still wrestle with ageing billing, shipping and home-services portals. Manual clicks. Endless logins. Human errors. Training new staff feels like pushing a boulder uphill.

The good news? Workflow automation can turn that boulder into a ball you roll. But not all tools play nicely with legacy systems. Let’s compare two approaches: a popular low-code platform and Simplex’s tailor-made solution for older portals.

Boomi Flow: A Low-Code Leader

Boomi Flow shines in modern app-building:

Visual drag-and-drop canvas
Hundreds of pre-built connectors
Cloud-native, multi-cloud deployment
API-first architecture for custom extensions

Customers praise its speed. They cut development time. They launch partner portals in weeks, not months.

Where Boomi Falls Short with Legacy Systems

Limited web-agent support for non-API portals
No built-in CAPTCHA or anti-bot handling
Session logging is focused on data flows, not user journeys
Scaling headless sessions requires extra configuration

In short: Boomi Flow shines with modern endpoints. But legacy billing or shipping portals? You’ll need workarounds.

Simplex SDK & Web Agents: Built for Legacy Portals

Enter Simplex. We designed our low-code SDK and customizable web agents to tackle ageing systems head-on.

Customisable Web Agents

Automate any portal task: invoice retrieval, shipment updates, order entries
Python and TypeScript SDKs for easy scripting
Tweak agents without rewriting core logic

Headless Browser Automation

Run hundreds of concurrent sessions
Maintain performance under peak demand
Seamless scaling on cloud or on-premise

Advanced CAPTCHA Handling

Automatic CAPTCHA solving
Anti-bot protection bypass
Uninterrupted, 24/7 automation

Session Logging & Reporting Tools

Track every click, form fill, and navigation step
Replay sessions for audit and debugging
Export logs to your BI tools for visibility

Side-By-Side: Boomi Flow vs Simplex

Feature	Boomi Flow	Simplex SDK & Web Agents
Legacy Portal Support	Indirect, via custom scripts	Native web agents for any portal
CAPTCHA & Anti-Bot Handling	Not built in	Automatic solving and bypass
Session Logging & Replay	Focus on data pipelines	Full session replay & detailed logs
Scalability	Multicloud, extra configs needed	Built-in headless scaling
Development Languages	JavaScript, low-code	Python & TypeScript SDKs
Ease of Integration	Great for APIs, limited for screen scrapes	Intuitive SDKs tailored to legacy webs

Real-World Workflow Automation Use Cases

Logistics Companies
Automate shipment status updates from a 10-year-old TMS portal. No API? No problem. Web agents do the heavy lifting.
Accounting Firms
Pull invoices and payment records from outdated billing platforms. Save hours of manual downloads and uploads.
Home Service Providers
Manage customer requests, job scheduling, and invoicing—all without retraining staff on a new portal.
E-Commerce Retailers
Sync inventory and order data between your modern ERP and legacy warehouse system. Reduce stockouts and oversells.

Why You Should Choose Simplex

Tailored for Legacy – No need to rip and replace portals.
Seamless Scaling – Headless browsers handle high concurrency.
Transparent Operations – Detailed logs keep you audit-ready.
Quick Onboarding – Low-code SDKs get you live in days.
Anti-Bot Confidence – Solve CAPTCHAs and avoid throttling.

Your team deserves a solution that fits your existing workflows. Simplex brings modern workflow automation straight to your legacy portals—with minimal fuss and maximum impact.

Ready to Simplify Your Legacy Automation?

Don’t let outdated systems slow you down. Experience true workflow automation that just works—regardless of how old your portals are.

Get started with Simplex today → https://www.simplex.sh