Selecting SCADA software is one of the most consequential decisions in any industrial automation project. The right platform will serve your operations for 10-20 years; the wrong choice means expensive migration projects, integration headaches, and a system your operators never fully trust. This guide covers what to evaluate, the leading platforms, and how to match software capabilities to your application requirements.
What SCADA Software Actually Does
Modern SCADA software serves several interconnected functions: real-time data acquisition from field devices via industrial protocols; process visualization through animated graphics and dashboards; alarm management — detecting, annunciating, and logging process abnormalities; historical data logging to a process historian; reporting and analytics; and increasingly, integration with enterprise systems (ERP, MES) and cloud platforms.
Key Evaluation Criteria
Tag Capacity and Scalability
SCADA platforms are typically licensed by tag count — the number of data points (I/O) the system monitors. Match your current tag count with 50-100% growth headroom. Enterprise platforms can scale to hundreds of thousands of tags; smaller packages may cap at a few thousand. Understand whether licensing is perpetual or subscription-based and what tag expansion costs look like.
Protocol Support
Native drivers for your field device protocols are essential. Most platforms support Modbus, OPC-DA/OPC-UA, and DNP3. Verify native support for your specific PLC vendor protocols (Allen-Bradley EtherNet/IP, Siemens S7, Mitsubishi MC Protocol). Third-party driver toolkits (Kepware, Matrikon) can fill gaps but add cost and complexity.
Historian Integration
Process historians store time-series data for trending, reporting, and compliance. Some SCADA packages include built-in historians (Wonderware InTouch/Historian, iFIX/Historian). Others integrate with standalone historians like OSIsoft PI (now AVEVA PI), Canary Labs, or InfluxDB. Evaluate whether you need a dedicated historian or whether the built-in historian meets your data retention and query requirements.
Redundancy and High Availability
For critical processes, hot-standby redundancy — where a backup server takes over instantly if the primary fails — is non-negotiable. Evaluate: server redundancy, network redundancy, client failover behavior, and whether the redundancy license adds significant cost. Some platforms handle redundancy elegantly; others bolt it on awkwardly.
Security Architecture
Modern SCADA software should support: role-based access control (RBAC) with Active Directory integration, encrypted communications between clients and servers, audit logging of all configuration changes and operator actions, and support for security hardening (disabling unnecessary services, running as non-admin). Ask vendors how they handle security patching cadence — monthly? quarterly? — and what their track record is for ICS-CERT vulnerability disclosures.
Mobile and Web Clients
Many organizations want operators to monitor processes from tablets or access dashboards from a browser without installing thick clients. Evaluate whether web/mobile clients are included or require additional licensing, and whether they provide full functionality or limited read-only views.
Leading SCADA Software Platforms
AVEVA System Platform / InTouch (formerly Wonderware)
One of the most widely deployed SCADA/HMI platforms globally. Strong historian integration, object-oriented graphics, and a large installed base mean extensive third-party support and readily available talent. Well-suited for large, complex applications.
Ignition by Inductive Automation
A modern, web-based platform that has disrupted the traditional SCADA market with unlimited tag licensing (no per-tag fees), browser-based development and visualization, and a Java-based architecture that runs on any OS. Popular for organizations moving toward IIoT and cloud integration. Strong OPC-UA and MQTT support.
GE iFIX / Cimplicity (now Emerson)
Established platforms with deep roots in manufacturing and utilities. iFIX has a strong track record in pharmaceutical and regulated industries where CFR 21 Part 11 compliance (electronic records) is required.
Rockwell FactoryTalk View
The natural choice for facilities with heavy Allen-Bradley PLC investments. Deep integration with Studio 5000 programming environment and Logix controllers. Best in class for tight PLC-SCADA integration in Rockwell ecosystems.
Siemens WinCC
The standard choice for Siemens S7 environments. WinCC Unified is the modern web-based successor to the classic WinCC platform. Excellent integration with TIA Portal engineering environment.
Open Source and Low-Cost Options
For budget-constrained applications or lab environments, open-source platforms like OpenSCADA, ScadaBR, and Node-RED (for lightweight IIoT applications) provide functional alternatives. These require more technical expertise to deploy and maintain but carry no licensing costs.
Find Your SCADA Software at SCADA.Store
Browse our SCADA software collection including licensed SCADA platforms, historian software, OPC server products, and development tools from leading vendors. Pair software with the right SCADA hardware and training resources for a complete solution. Not sure which platform is right for your application? Contact our team — we can help you evaluate options based on your specific requirements.