VCLAVIS
4.5/10Web-based software for designing pressure vessels and heat exchangers to ASME VIII Div 1, EN13445, PD5500 and AD2000, used by mechanical engineers and fabricators.
Data last updated November 2026 · Our methodology
Overview
VCLAVIS is a cloud application for mechanical design calculations on pressure vessels and heat exchangers. It runs in the browser, so engineers do not have to install anything. It supports four design codes: ASME VIII Division 1, EN13445, PD5500 and AD2000. Beyond the basic vessel and stability analysis, it handles rigging analysis with dynamic load factors for trunnion and tailing lug setups. It also covers seismic, wind, blast, acceleration, snow and live loads using Eurocode and ASCE data, local load checks to WRC 537, WRC 297 and code-specific rules, and simplified code-based fatigue analysis. The output is a set of PDF calculation reports, and the vendor quotes a customer who got Notified Body approval for an EN13445 vessel designed with the tool. The product is made in the EU, with Greek contact details, and directory listings say it was founded in 2025. It suits small fabricators, engineering consultancies, inspectors and refinery engineering teams who want code calculations without a large desktop licence. Pricing is a single subscription paid monthly, every six months or yearly. Prices exclude VAT, there is a free trial, and every plan includes the same features. No integrations or API are documented, and there is no CAD modelling or document management. Its main limitation is that it is very new: it has almost no independent reviews, and it lacks the track record and wide code coverage of established tools such as PV Elite or Codeware COMPRESS.
Our Rating
Who VCLAVIS is best for
Best software for Engineering FirmsGood fit
It is built for mechanical engineers who run pressure vessel code calculations.
Vessel and heat exchanger fabricators can produce code calculation reports for approval.
Less suited
A browser-based monthly subscription suits independent design engineers.
Directory listings name refineries among its users, but the product covers only equipment design.
Pros & Cons
Pros
- It covers four major pressure vessel codes in one tool: ASME VIII Div 1, EN13445, PD5500 and AD2000.
- It includes specialised load cases such as rigging, blast, seismic and WRC 537 and WRC 297 local loads.
- It runs in the browser with nothing to install, and a free trial is available.
- Its monthly subscription is much easier to start with than the perpetual licences of desktop rivals.
- The vendor cites Notified Body acceptance of a vessel designed to EN13445 with the tool.
Cons
- The product launched in 2025, so it has a short track record and almost no independent reviews.
- No integrations, API or CAD export are documented.
- The pricing page shows two unlabelled prices for each plan, which makes the actual cost unclear.
- No security or compliance information is published for this cloud tool.
- The interface is in English only, according to SourceForge.
Key Features
VCLAVIS Pricing
Monthly
- PDF reports
- Excludes 24% VAT
- Material libraries
- Stability algorithm
- Web-based application
- The pricing page also shows a lower, unlabelled figure of 119 EUR, apparently a discount
Annual
- Excludes 24% VAT
- Same features as the other plans
- The pricing page also shows a lower, unlabelled figure of 499 EUR, apparently a discount
Semi-Annual
- Same features as the other plans
- 1400 EUR per 6 months, excluding VAT
- The pricing page also shows a lower, unlabelled figure of 249 EUR
Frequently Asked Questions
It supports ASME VIII Div 1, EN13445, PD5500 and AD2000. Local load checks also cover WRC 537 and WRC 297.
Yes. You can register for a free trial through the web app.
The list prices are 250 EUR a month, 1400 EUR for six months or 2500 EUR a year, all excluding VAT. The pricing page also shows lower, unlabelled discount figures for each plan.
No. It is a cloud web application that runs in the browser.
Support is available by email and phone, and the vendor provides a knowledge base, an FAQ, and app update notes.
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Ranked near VCLAVIS in Industrial & Infrastructure Software
See VCLAVIS in the listVCLAVIS is #330 in Industrial & Infrastructure Software by our score.
