SIMULATION SOFTWARE LIMITED
Simulation Software Limited develops VariSim, a Windows-based pipeline hydraulic simulator built over 50 years, sold to enterprise pipeline operators in water, oil and petrochemical, gas, district heating, and power industries across the UK, USA, Middle East, and Asia.
- Company typePrivate
- Founded1970
- HeadquartersRipon, United Kingdom
- Headcount11–50
- GTM typeB2B
- OfferingSoftware
What SIMULATION SOFTWARE LIMITED does
Simulation Software Limited (SSL), founded in 1970 and headquartered in Ripon, North Yorkshire, England, is a privately held engineering software company specializing in pipeline hydraulic simulation and pipeline management systems. The company operates as part of the broader Hydraulic Analysis Group, alongside sister company Hydraulic Analysis Ltd., and serves enterprise customers across five industrial verticals: water utilities, oil and petrochemical pipeline operators, natural gas transmission, district heating networks, and power generation (steam). Its core product is VariSim, a Windows-based pipeline hydraulic simulator built on 50 years of continuous development within the Hydraulic Analysis Group, offering both steady-state and true transient analysis for single-phase fluids (liquids, gases, steam). VariSim's distinguishing technical features include variable wave-speed and variable timestep simulation, fluid property variation modelling (composition, density, viscosity, thermal), and conformance with API 1130/1155 standards for leak detection.
The VariSim engine operates inside the broader VariSuite platform, which combines the simulator with the VariView SCADA-style graphical user interface, the VariSim-RI remote client, the SSL Message Broker middleware (transferring tens of thousands of datapoints per second), and an OPC Client/Server for SCADA/PLC connectivity. Plug-in modules include Performance Studies (flow assurance and surge analysis), Monitoring (fluid, physical, and virtual tracking), E-RTTM Leak Detection (neural net-based pattern recognition), Batch and Capacity Management, Optimisation, and Training Simulators. The system supports both desktop study workflows and online real-time digital twin operation driven by SCADA and historian data. SSL holds ISO 9001:2015 and ISO 27001:2013 certifications and is listed on FPAL/UVDB procurement databases, satisfying enterprise supplier prerequisites.
SSL earns revenue through a mix of one-time enterprise software licences (VariSim, VariView, VariSuite, Data Broker), recurring maintenance and support contracts (including 24/7 options), training services, and consultancy delivered via its sister company Hydraulic Analysis Ltd. The go-to-market is direct enterprise field sales, supplemented by a global channel partner network — NovaTech in the UAE, Indusup in Turkey, and BDSSTL in China — and wholly-owned subsidiaries in the USA (Houston), Indonesia (Jakarta), and UAE (Dubai). The company employs 11–50 staff, operates from UK offices in Ripon and Leeds, and presents itself as an approved supplier to major pipeline operating companies, consultants, and contractors, though customer references are only disclosed upon request.
SIMULATION SOFTWARE LIMITED firmographics
Firmographics- Name
- SIMULATION SOFTWARE LIMITED
- Legal name
- Simulation Software Limited
- Website
- http://www.ssl-int.com
- Company type
- Private
- Founded year
- 1970
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Simulation Software Limited develops VariSim, a Windows-based pipeline hydraulic simulator built over 50 years, sold to enterprise pipeline operators in water, oil and petrochemical, gas, district heating, and power industries across the UK, USA, Middle East, and Asia.
- Ownership category
- akta.pro rank
Where SIMULATION SOFTWARE LIMITED is headquartered
LocationHeadquarters
- HQ city
- Ripon
- HQ country
- United Kingdom
- HQ region
- Europe
Offices5 records
Markets served
SIMULATION SOFTWARE LIMITED business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure
Revenue model
- Software Licenses and Subscriptions: Pipeline hydraulic simulation software including VariSim desktop simulator and VariSuite real-time management system. Professional Windows-based software with enterprise deployment capabilities.
- Maintenance and Support Contracts: Tailored support contracts ranging from telephone support to comprehensive maintenance and support contracts with varying degrees of commitment. Includes 24/7 cover options and replicated system assessment.
- Training Services: VariSim Training Courses, Pipeline Management Training Courses, and Pipeline Hydraulic Behavior Training Courses. Available at UK offices or worldwide on request.
- Consultancy Services: Online system analysis, leak detection system consultation, flow assurance and surge analysis studies, and pressure testing services. Provided through sister company Hydraulic Analysis Ltd.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| One time/ perpetual license | Multi-year contract | Enterprise software licensing with customized deployment |
Go-to-market motion2 records
Distribution channels3 records
Marketing channels6 records
SIMULATION SOFTWARE LIMITED product offering
Product offeringCore offering
SIMULATION SOFTWARE LIMITED develops and licenses pipeline hydraulic simulation software, centered on its VariSim Windows-based simulator and complementary VariView GUI and VariSuite Pipeline Management Systems framework. Its software is used by pipeline operators and engineers in the water, oil and petrochemical, gas, district heating, and steam power industries for steady-state and transient analysis, real-time monitoring, leak detection, batch/capacity management, optimisation, and operator training. The company also offers training, consultancy, and customer support services around its software products.
Product overview
Simulation Software Limited offers VariSim, a PC-based pipeline hydraulic simulator, as the core of its product portfolio. The VariSim Simulator provides steady state and transient hydraulic analysis for single-phase fluid pipelines across water, oil/petrochemical, gas, heating, and power industries. The product ecosystem consists of VariSim as the core simulation engine, paired with VariView GUI for operator displays and VariSim-RI for remote interface access. These components operate within the VariSuite framework, which includes communications middleware (Data Broker, OPC Client/Server) and additional plug-in modules: Performance Studies (Flow Assurance and Surge Analysis), Monitoring (Fluid, Physical, and Virtual Tracking), Leak Detection (E-RTTM method), Batch and Capacity Management, Optimisation, and Training Simulators. The system can operate as a standalone desktop simulator or as an online real-time/digital twin environment connected to SCADA systems.
Differentiator
Problem solved
Functional benefit
Brands
- VariSim Simulator: Professional Windows-based pipeline hydraulic simulator for steady state and transient hydraulic studies
- VariView GUI
- VariSuite
- VariSim-RI
- E-RTTM
Products and services
- Training Services Structured training programmes for customers using VariSim, VariView, and VariSuite, aimed at pipeline engineers and operators in the water, oil and petrochemical, gas, heating, and power sectors.
- VariSim Simulator Windows-based pipeline hydraulic simulator used by pipeline operators and engineers to model and analyse pipeline networks. Supports steady-state and transient hydraulic analysis across the water, oil and petrochemical, gas, district heating, and steam power industries.
- VariView GUI Graphical user interface / display package that provides visualisation of pipeline networks and simulation results, used together with the VariSim Simulator.
- VariSuite (Pipeline Management Systems framework) Software framework for Pipeline Management Systems that hosts supplementary modules for performance studies, monitoring, leak detection (E-RTTM), batch and capacity management, optimisation, and training simulation.
- VariSim-RI (Remote Interface) Remote Interface that connects the VariSim simulator to external systems, enabling integration with operational control and pipeline management environments.
- Consultancy Services Consultancy services leveraging the company's pipeline hydraulic simulation expertise to support customers with modelling, analysis, and pipeline management projects across process industries.
- Customer Support Ongoing technical support and maintenance service for users of the VariSim, VariView, VariSuite, and VariSim-RI products.
Quantifiable outcome
- Pipeline Management Applications provide commercial payback to pipeline operating companies in a matter of months
- +2 more outcomes
Companies that use SIMULATION SOFTWARE LIMITED
Customer profileNamed customers1 record
Segments5 records
Ideal customer profiles1 record
SIMULATION SOFTWARE LIMITED technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration6 records
AI capability5 records
Feature6 records
SIMULATION SOFTWARE LIMITED partnerships and signals
Strategic signalPartnerships
Six partnerships are on record, tiered core and regional.
- Hydraulic Analysis Ltd.coreSister company within the Hydraulic Analysis Group. Provides flow assurance studies, surge analysis, pressure testing, and site services. Located in UK with shared expertise and development history since 1970.
- Hydraulic Analysis Inc.coreSubsidiary company in USA (Houston, TX) providing local support and services for North American clients.
- P.T. Hydraulic Analysis IndonesiacoreSubsidiary company in Jakarta, Indonesia providing regional support and services for Southeast Asian clients.
- NovaTechregionalPartner office in Abu Dhabi, UAE (Nawat Tower). Represents Simulation Software Limited products in the UAE market.
- IndusupregionalPartner office in Istanbul, Turkey (Taşyoncası Sok., Maslak). Represents Simulation Software Limited products in the Turkey market.
- BDSSTLregionalPartner office in Beijing, China (Gaolan Mansion, Chaoyang District). Represents Simulation Software Limited products in the China market.
Scale indicators2 records
Recent moves6 records
Expansion highlights5 records
SIMULATION SOFTWARE LIMITED competitors and assessment
Company assessmentMarket position
Competitive moat5 records
Key highlights7 records
Customer concentration
SIMULATION SOFTWARE LIMITED social profiles
Digital presenceSIMULATION SOFTWARE LIMITED compliance and trust
Trust signalCompliance2 records
SIMULATION SOFTWARE LIMITED financial estimates
Financial estimateRevenue estimate
Valuation estimate
SIMULATION SOFTWARE LIMITED leadership team
Management profileNumber of profiles
Profiles2 records
SIMULATION SOFTWARE LIMITED subsidiaries and ownership
Company hierarchySubsidiaries4 records
SIMULATION SOFTWARE LIMITED funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
SIMULATION SOFTWARE LIMITED M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about SIMULATION SOFTWARE LIMITED
What does SIMULATION SOFTWARE LIMITED do?
SIMULATION SOFTWARE LIMITED develops and licenses pipeline hydraulic simulation software, centered on its VariSim Windows-based simulator and complementary VariView GUI and VariSuite Pipeline Management Systems framework. Its software is used by pipeline operators and engineers in the water, oil and petrochemical, gas, district heating, and steam power industries for steady-state and transient analysis, real-time monitoring, leak detection, batch/capacity management, optimisation, and operator training. The company also offers training, consultancy, and customer support services around its software products.
Is SIMULATION SOFTWARE LIMITED a public or private company?
SIMULATION SOFTWARE LIMITED is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was SIMULATION SOFTWARE LIMITED founded?
SIMULATION SOFTWARE LIMITED was founded in 1970. It employs 11 to 50 people.
Where is SIMULATION SOFTWARE LIMITED based?
SIMULATION SOFTWARE LIMITED is headquartered in Ripon, United Kingdom, in the Europe region.
How does SIMULATION SOFTWARE LIMITED make money?
Four revenue lines are on record. Software Licenses and Subscriptions are the primary driver. The others are maintenance and Support Contracts, training Services and consultancy Services.
Does SIMULATION SOFTWARE LIMITED have an API?
Yes. The data broker product facilitates rapid data transfer between applications and third party packages through an available API. The SSL message broker is a middleware piece of software dedicated to the controlled distribution of messages and data between different applications. It facilitates data acquisition and can transfer tens of thousands of datapoints per second.