Streamline Your Industrial Automation with Powerful IIoT Solutions

OAS empowers you to visualize, control, and seamlessly integrate data across any industrial device or platform.

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Trusted by thousands of customers worldwide, including:

Pioneering 30 Years of Innovation in HMI, SCADA, and IoT Technology

Over the last 30 years we have been at the forefront of HMI, SCADA, and IoT technology.

Open Automation Software was founded on the premise that user interfaces and database archiving software should be open, should reach beyond the control room, should be easy to implement and be cost-effective. OAS focuses on delivering customers' data with the highest accuracy possible in a reliable and secure transport.

24/7/365
Support

We have technical support available by phone, chat and email

30+ Years
Experience

Product efficiency and continuous market testing

100%
Accurate

Data integrity and connectivity to hardware and services

Why OAS

Transport & Transform Your Data with Advanced IIoT Software

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Universal Data
Connector

A server-based, highly-scalable, network platform that enables the transport and transformation of your data.

Data
Historian

Log data at high speed to most database platforms, and even simultaneously to CSV files.

Visualization
Tools

A server-based, highly-scalable, network platform that enables the transport and transformation of your data.

Device & Data
Connectors

Direct connectivity to Allen Bradley, Siemens, and Modbus devices allows for the highest performance and reliability.

Build and publish interactive UIs, HMIs, and web applications. Zero code required.

Create complex applications within a web browser, and without writing a single line of code, all contained within the OAS server installation.

From simple labels to fully customizable gauges, trend charts, and data grids, display your real time and historical data exactly they way your end users require.

Learn More About UIEngine

OAS UIEngine for no code HMI development and hosting

OAS is so much more than just a SCADA solution. It is an entire suite of packages.

We use it for Data Historian. It offers connections to every kind of database and even CSV files if you need that. You can build your query statements with OAS tags and dynamically populate them with information read from PLC's. With the Recipes feature you can read information from a database and write it to the PLC. You can easily build SCADA screens with the OAS Open UI Engines No-code UI Builder. Features are simple drag and drop to build displays. If you need more complex features, you can integrate with .NET and REST API's. It also offers notifications via text messages and Email. Voice messaging is available thru a Twillio account.

Stephen S.

Lead Engineer

Awesome response to issues or questions from the support team.

I've worked in the industry for over 30 years and being able to discuss issues/feature request with the development team is unheard of. OAS is my go to SCADA software. OAS allows my company to create custom SCADA applications for the Water/Waste Water Industries. OAS allows us to create amazing graphics using VB.NET and Blend that are the best in the industry. Reporting is very easy to implement which most SCADA packages struggle to provide. OAS device drivers all work flawlessly so additional 3rd party drivers are not required.

David S.

System Integrator

Their customer support was the best I have experienced across all software applications.

Technical support was readily available, incredibly knowledgeable, polite and followed up to make sure everything was working properly. I had a couple of calls, and interacted with different support techs. Each was fantastic but more importantly the handoff between them was seamless. Resolution was fast and the tech's provided training so I learned while getting help. FANTASTIC CUSTOMER SUPPORT! The suite is extremely comprehensive. It provides easy preconfigured access to all standard automation systems as well as great IOT support. Our application required Modbus, Bacnet, MQTT, and standard HTTP and API access. OAS did them all, right out of the box. There are a number of wizards that make set up and use of the software fast and simple. It was by far the easiest to get up and running productively.

David M.

CEO

Their support has been un-matched by any other manufacture that I have worked with.

We have used Open Automation software solutions for a variety of projects from SCADA to HMI with custom gauges to data logging with custom report generation. They have always responded very quickly to questions. You don’t get that from any other software provider. The product offering is solid and very scalable. You can start out inexpensively with just collecting your data and archiving it in an open data base format. Add additional features as you deem necessary. Their tag pricing is flexible and reasonable in cost. You can connect unlimited clients to the server, no additional charge to access your data. They have a good set of fast device drivers for the major PLCs, along with connection to OPC and OPC UA data servers. There is an alarm notification feature for texting, emailing, and voice messaging.

Pat D.

Automation Specialist

Highly recommended!

We are offering services of automation to our clients. This is the software we use for our clients and it meets exactly to their requirements. We implement it in three different sites of the pharmaceutical industry and it works excellent to tranfer data and develop communication in between the machines.

Naveed K.

Maintenance Engineer

Support is the absolute best.

Pros: Open architecture and maximum flexibility for customization. Support is the absolute best. Flexible deployment solutions. Cons: I don't really have any cons. The product works exactly how I need it to. Overall, I absolutely love OAS. It is an instrumental tool for me to be able to provide custom solutions for my customers. I would also say that one driving factor behind the success of my Open Automation Software implementations would be their unparalleled support. If we need anything to solve a customer's need, they are eager and willing to enhance the software to make it happen.

Michael J.

System Integrator

OAS is the most comprehensive, easy-to-use, and flexible OPC toolkit for the .NET developer.

Open Automation Software offers unparalleled customer support and timely, reasonably priced custom modifications which can stand up to the most challenging and unique automation programming tasks.

Philip N.

CTO

OAS has the best customer service by far over their competition.

They have an excellent product. From real time data to data logging, data retrieval and writing to PLC's. Alarms, Alarm notification, report generation and email capabilities. With the tags and tag properties the options to construct anything with the data is as unlimited as the users abilities and imagination. The ability to read and write data to PLC's and manipulate it in any way desired is unprecedented. An entire suite of software provides the ability to do anything you need in one software package.

System Integrator

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Industries where we make a difference

Building Automation Smart Cities Agricultural Industry Defense Industry Marine Mining

Infinitely Flexible Secure Networking for IIoT

Built upon a Distributed Network Architecture that enables advanced Edge Computing, reliability, and performance for IIoT, the OAS Platform can be deployed in infinite configurations to meet your needs. Interconnect OAS servers for load balancing, failover, data aggregation from remote clients, and more.

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Seamless Connectivity

Connect to all of your PLCs and devices such as Allen Bradley, Siemens, Modbus, MQTT, MTConnect, OPC UA/DA, and more.

Fast, Reliable Data Logging

Lightning fast data logging, zero data loss. Log to virtually any database platform, reliably and at at high speed with zero data loss, even on unreliable networks.

Transform Data in Real Time

Using the built-in Calculation Engine, combine and transform data from any source into any format, including JSON for use in external endpoints.

Basic Networking

Network clients, either over LAN, WAN, or Internet can communicate directly with an OAS Platform server.

Live Data Cloud

Move data between OAS Platform servers, aggregate data, and secure source data over dynamic IP addresses.

See How We Compare: An Affordable Industrial Automation Solution

The initial cost of OAS is far less than our competitors – but the savings don’t stop there. We work with OEMS and System Integrators to provide perpetual licenses with quantity discounts with flexible tag pricing and unlimited client connections.

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Network Feature

OAS IoT DNA

Typical Cloud

Accurate Live Data

Unlimited Data Usage / No Fees

Data Resolution of 100 Nanoseconds

High Speed Throughput < 50 ms

No Data Loss on Network Failure

Explore News & Articles

Keep up to date with the latest news and information about Big Data, Industrial IoT, Industry 4.0, and how the OAS Product Platform can power your next solution.

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July 16, 2025

Getting Started with Modbus TCP

Summary: Modbus TCP is a simple, Ethernet-based protocol used for industrial device communication. It enables fast, reliable data exchange using...