Your operations team wants to pilot a web SCADA solution — but which vendors actually let you try before you buy? Some platforms offer genuine free trials, some hide evaluation behind a sales process, and some offer something better than a trial: a structured pilot on your real equipment. This guide maps the evaluation options across the major SCADA vendors and lays out a 30-day proof-of-concept plan that produces a defensible buy/no-buy decision.
Most major SCADA vendors offer some evaluation path, but the formats differ enough to change your whole evaluation timeline. Ignition is publicly downloadable with a resettable trial mode, VTScada publicly lists a free small-system edition, AVEVA and FactoryTalk are evaluated through sales-led demos and distributor channels, and Merobix runs a guided demo followed by a structured pilot on your own sites.
| Platform | Evaluation Format | Publicly Listed / Commonly Cited Limits | Best Suited For |
|---|---|---|---|
| Merobix | Guided demo + 30-day pilot on your equipment | Cloud live in 3–5 days; pilot runs on real sites | Operators who want proof on real wells, tanks, and plants |
| Ignition | Free public download, resettable trial mode | Trial mode commonly cited as 2-hour sessions, unlimited resets | Engineers who want unsupervised hands-on time |
| VTScada | Free small-system edition | Publicly listed 50 I/O tag cap on the free edition | Very small systems and desktop evaluation |
| AVEVA | Sales-led demo, integrator-arranged evaluation | No open download; timeline set by the sales process | Enterprise deployments with integrator support |
| FactoryTalk View | Demo and trial media via Rockwell distributors | Arranged through the distributor channel | Plants already standardized on Allen-Bradley |
Ignition by Inductive Automation deserves genuine credit here: its full installer is publicly downloadable, and the software runs in a trial mode that resets on a timer as many times as you like. For a controls engineer who wants to build screens and connect a test PLC over a weekend with no sales contact, it is the most developer-friendly evaluation in the industry. The catch is that a self-driven trial proves the software runs — it does not prove your remote sites will stay connected over cellular, that your pumpers will actually use it, or what the deployed system will cost. See our full Merobix vs Ignition comparison for where each platform wins.
VTScada publicly lists a free edition capped at 50 I/O tags — a legitimate way to learn the toolset on a small system, though 50 tags rarely covers even a single well pad once you count pressures, temperatures, levels, runtimes, and alarms.
AVEVA and Rockwell FactoryTalk follow the traditional enterprise model: evaluation happens through scheduled demos with sales engineers and, where a trial license is warranted, through integrator or distributor arrangements. That process works for large capital projects with long procurement cycles; it is slow for an operations team that wants an answer this quarter.
Merobix takes the pilot-first path. A guided demo walks your team through the live platform on realistic oil and gas data, and the follow-on pilot connects one or two of your actual sites. Because the cloud platform goes live in 3–5 days with no servers to install, a complete proof of concept — real tags, real alarms, real operators — fits comfortably inside 30 days.
These three evaluation formats answer different questions, and mixing them up is the most common reason SCADA evaluations stall. A trial proves the software works; a demo proves the vendor understands your problem; only a proof of concept proves the platform works for your operation.
A downloadable trial or developer license answers: "Can my engineers configure this?" It is the right tool for evaluating scripting, screen-building, and driver setup. It cannot answer questions about field connectivity, alert reliability at 2 AM, or total cost of ownership — a lab PC with a simulator is not a wellhead on LTE.
A guided demo answers: "Does this platform handle operations like mine?" A good demo uses data that looks like yours — tank levels, casing pressures, compressor runtimes — and shows the exact workflows your operators will live in: alarm acknowledgment, callout escalation, trend analysis, and daily reports. If a vendor can only show a generic manufacturing dashboard to an oilfield operator, that is a signal.
A pilot answers the only question that matters: "Does this work on my equipment, with my people, at a cost I can defend?" It connects a subset of real sites, runs for a fixed window against written success criteria, and ends with a decision. For web-based SCADA this is dramatically easier than it used to be — our web SCADA guide covers why a browser-delivered platform can be piloted without touching your IT infrastructure.
A 30-day PoC succeeds when it is scoped like an engineering test, not a sales activity: written success criteria first, a representative tag sample, deliberate alarm tests, daily operator use, and a TCO comparison at the end. Here is the week-by-week structure we recommend regardless of which vendor you evaluate.
If the criteria are not written before the pilot starts, the pilot cannot fail — which means it also cannot prove anything. Keep the list short and measurable:
Do not pilot your easiest site — pilot your most representative one. Pick one or two sites that cover your real protocol mix (Modbus RTU on an older RTU, EtherNet/IP on a newer PLC) and your real communications path, usually cellular. A sample of 50–200 tags per site is enough to exercise trending, alarming, and reporting without turning configuration into the whole pilot. Ask the vendor how many protocol drivers ship included — Merobix includes 20 drivers across 7 protocol families in every plan, so a mixed-vendor site is not a change order.
This is the phase most evaluations skip, and it is where platforms fail. Force real alarm conditions: close a valve to trip a pressure alarm, kill power to a gateway, let a tank level cross a setpoint. Time every notification. Test escalation — leave an alarm unacknowledged and verify it walks up the callout chain. Then hand the platform to the people who will use it: give pumpers and operators their own logins, put the mobile dashboard on their phones, and ask them to run their normal route with it. Operator resistance discovered after purchase is a failed project; operator resistance discovered in week 2 of a pilot is free information.
Convert pilot results into a five-year cost picture: subscription or license cost, gateway hardware ($300–$800 per site), server and IT burden if on-premise, integration hours, and the downtime you expect to avoid with faster alarms. Our ROI calculator structures this comparison. Then hold the decision meeting inside the pilot window while the data is fresh — a PoC that drifts past 60 days without a decision usually means the success criteria were never real.
Merobix does not offer an anonymous self-serve trial, and that is deliberate: a SCADA evaluation on simulated data answers the wrong question. Instead, the path is a guided demo — a live walkthrough of the dashboard, alarming, historian, and reporting on realistic operational data — followed by a pilot scoped to your sites, your protocols, and your success criteria.
The pilot economics work because deployment is fast: cloud deployments go live in 3–5 days, so the evaluation window is spent evaluating, not installing. The platform carries a 99.9% uptime SLA, delivers SMS and email alarms in under 30 seconds, and every plan is flat and all-inclusive — no per-tag, per-client, or per-protocol fees, so the price you validate in the pilot is the price at full rollout. The full feature matrix across Starter, Professional, and Enterprise is on the plans page; pricing is custom-quoted for your operation.
Operations that cannot send data offsite can pilot the same platform on-premise — Merobix deploys on customer servers or VMs, air-gapped compatible, with full data residency. And if your security team gates the pilot, the security page documents the platform's architecture and controls up front, and why operators choose Merobix summarizes how the platform compares on the criteria above.
Pilot negotiation tip: Before any SCADA pilot begins, get three things in writing from the vendor: the go-live date for your pilot sites, the alert-delivery commitment you will be measuring, and the full-rollout price with the fee model spelled out. Vendors who hesitate on any of the three are telling you how the production relationship will go. Compare how the leading platforms stack up in our best cloud SCADA systems comparison, or request a guided Merobix demo to scope a pilot.
Most major SCADA vendors offer some evaluation path, but the format varies widely. Ignition by Inductive Automation is publicly downloadable and runs in a resettable two-hour trial mode — the most developer-friendly free trial in the industry. VTScada publicly lists a free edition limited to 50 I/O tags. AVEVA and Rockwell FactoryTalk are typically evaluated through sales-led demos and distributor-arranged trial licenses rather than open downloads. Merobix offers a guided demo followed by a structured pilot on your own equipment — because the cloud platform goes live in 3–5 days, a full proof of concept on real wells or plants fits inside 30 days.
Yes, for some platforms. Ignition's full installer is publicly downloadable and runs in a two-hour trial mode that can be reset unlimited times, which is excellent for engineers who want hands-on time. VTScada publicly lists VTScadaLIGHT, a free edition capped at 50 I/O tags. Most enterprise platforms — AVEVA, FactoryTalk — do not offer open free trials; evaluation goes through sales reps or distributors. For cloud SCADA like Merobix, the equivalent of a free trial is a guided demo plus a pilot on a sample of your real sites, which tests the platform against your actual PLCs, alarms, and operators rather than a lab simulation.
Thirty days is the right target for most operations. That is long enough to connect a representative tag sample, capture several weeks of real trend data, fire live alarm tests, and let operators use the dashboards day to day — but short enough to keep the evaluation focused and the vendor accountable. If a platform cannot get your PoC sites online within the first week, that delay is itself a data point about deployment complexity. Merobix cloud deployments go live in 3–5 days, which leaves more than three weeks of the PoC window for actual evaluation instead of setup.
For sales-led platforms (AVEVA, FactoryTalk, most enterprise SCADA), request a demo through the vendor's website and expect a scheduled call with a sales engineer. For Ignition, you can skip the call entirely and download the software yourself. For Merobix, request a guided demo at merobix.com/demo — a live walkthrough of the dashboard, alarming, and historian using realistic oil and gas data, followed by a pilot proposal scoped to your sites. Come prepared with your site count, PLC and RTU models, protocols in use, and your top three monitoring pain points so the demo covers what actually matters to your operation.
Yes — and you should insist on more than a screen-share. A cloud SCADA demo should show the live web dashboard, mobile access, alarm configuration, and historian trending. The stronger test is a pilot: connect one or two real sites through a gateway and run the platform against production equipment for 30 days. Because cloud SCADA requires no server installation, a pilot takes days rather than months to start — Merobix pilots are typically live in 3–5 days. Verify alert delivery speed (Merobix commits to SMS and email alerts in under 30 seconds), the uptime SLA, and data export options so you are never locked in.
Guided demo, then a 30-day pilot on your own sites — live in 3–5 days, custom-quoted, no per-tag fees.