Free SCADA Software — awtSCADA (2026)

Looking for free SCADA software that actually works with industrial protocols? awtSCADA is a complete SCADA/HMI system that runs from a single HTML file — no installation, no server, no license fees for the demo version.

Try Live Demo Download Free (20 MB)

What Makes awtSCADA Different

Traditional SCADA	awtSCADA
$10,000 - $100,000 license	Free demo, $15K full source
Windows server required	Any browser, any OS
Days/weeks to install	Open file → ready in 1 second
Vendor lock-in	You own the HTML file
Requires training	Familiar drag-and-drop interface

Supported Industrial Protocols (9)

IEC 61850 — MMS, GOOSE, Sampled Values (unique for browser SCADA)
OPC UA — universal industrial connectivity
Modbus TCP/RTU — PLCs, sensors, power meters
MQTT — IoT devices and edge computing
SNMP — network equipment monitoring
BACnet IP — building automation
DNP3 — utilities and water/wastewater
IEC 60870-5-104 — power grid telecontrol
REST API — custom integrations (15 endpoints)

Features

53 function blocks (PID controllers, timers, logic, math, filters, interlocks)
65 graphic elements (pumps, valves, motors, tanks, pipes, sensors, gauges)
Built-in SQLite database for trends, alarms, and operator logs
10,000 tags per second processing speed
100ms minimum update cycle
CSV export for reporting
User authentication and access levels

Free SCADA Comparison 2026

Software	Price	Protocols	Installation	IEC 61850
awtSCADA	Free demo	9	None	Full
FUXA	Free (OSS)	5	Node.js server	No
ScadaBR	Free (OSS)	3	Java server	No
OpenSCADA	Free (OSS)	4	Linux	No
RapidSCADA	Free (OSS)	3	.NET server	No

Who Uses Free SCADA Software

Small water treatment plants — monitoring pumps, levels, flow rates
Solar farms — inverter monitoring, energy production tracking
Building automation — HVAC, lighting, access control
Educational institutions — teaching industrial automation
Startups — prototyping IoT dashboards
Security researchers — ICS/SCADA lab environments

Getting Started

Download awtSCADA Demo (20 MB ZIP)
Extract the archive
Open SCADA_IEC61850_v8.html in Chrome, Firefox, or Edge
The demo project loads automatically with a built-in equipment emulator
To connect real equipment: start the Python Gateway

Need Full Source Code?

For companies that need to customize, integrate, or deploy at scale:

Full source code: JavaScript + Python
Commercial license: $15,000 one-time payment
Includes: all protocols, gateway, documentation
No recurring fees, no per-tag licensing

GitHub Repository