Updated September 2026. Prices and limits below were checked against each vendor’s public pricing page on the date shown in the sources; where a vendor publishes no price, we say so rather than guess.
There are more load testing tools than any team can evaluate, and most “best of” lists are written by the vendor at the top of the list. This one is too — RadView makes WebLOAD — so we have done two things to keep it useful: every claim about a competitor links to that vendor’s own documentation, pricing page, or independent reviews, and each profile says plainly who should not pick that tool, including ours.
The short version: 8 load testing tools at a glance
| Tool | Best for | Scripting | Protocols beyond HTTP | Real-browser tests | Recorder | Public pricing |
|---|---|---|---|---|---|---|
| WebLOAD (RadView) | Enterprise QA and performance teams testing web, API and packaged apps (SAP, Oracle, Salesforce) with one tool | JavaScript | WebSocket, SOAP/REST, JMS, MQTT/AMQP, FTP/SMTP/LDAP/TCP, SAP NetWeaver, Oracle Forms/PeopleSoft/Siebel, Salesforce, SharePoint | Yes (Selenium integration) | Yes, proxy recorder with automatic correlation | Pro from $499/month; Enterprise by quote; 15-day free trial |
| Apache JMeter | Teams with Java skills and no license budget testing APIs and backends | GUI + Groovy/BeanShell/Java | JDBC, JMS, LDAP, FTP, SMTP, TCP; WebSocket/gRPC via plugins | No (protocol level only, no JavaScript execution) | Yes (HTTP(S) Test Script Recorder) | Free (Apache 2.0); scale via BlazeMeter/OctoPerf costs $99–$999+/month |
| Grafana k6 | Developer-led teams running API tests inside CI/CD with Grafana observability | JavaScript/TypeScript | WebSocket, gRPC; SQL/Kafka/Redis via xk6 extensions | Yes (browser module) | Yes since k6 Studio 2.0 (Aug 2026) | OSS free; Cloud free 500 VUh/month, Pro $19/month + $0.15/VUh, Enterprise from $25,000/year |
| OpenText LoadRunner (now “Performance Engineering”) | Large enterprises with legacy estates (SAP GUI, Citrix, mainframe) and dedicated performance engineers | C, Java, .NET; TruClient (JS) | Broadest: SAP GUI, Citrix, RDP, Oracle NCA, Tuxedo, MQTT and more | Yes (TruClient) | Yes (VuGen) | Quote only; free Community Edition capped at 50 VUs |
| Gatling | Dev teams that want test-as-code in Java/Kotlin/Scala/JS | Java, Kotlin, Scala, JS/TS | WebSocket, SSE, JMS, MQTT, gRPC | No | Yes (HTTP recorder) | OSS free (single machine); Enterprise from €89/month |
| Locust | Python teams testing HTTP/APIs who want cheap distributed scale | Python | HTTP core; anything else via custom Python clients | No (manual Selenium/Playwright wiring) | No | OSS free; Locust Cloud usage-based |
| Tricentis NeoLoad | Enterprises testing SAP, Citrix and packaged apps who want codeless design | Codeless + JavaScript, YAML as-code | SAP, Oracle, Citrix, JMS, MQTT, AMQP, RTMP, GWT, packaged apps | Yes (RealBrowser) | Yes | Quote only |
| BlazeMeter (Perforce) | JMeter-invested teams that want a managed cloud with published prices | JMeter .jmx, Taurus YAML, Selenium | Inherits JMeter’s set | Yes (Selenium) | Yes (Chrome extension) | Free 50 users; Basic $149/month; Pro $649/month; Unleashed by quote |
If you only read one row: the tools split into two families. Code-first engines (k6, Gatling, Locust, JMeter) are free or cheap, excellent for API testing in a pipeline, and assume a developer writes and maintains the scripts. Enterprise platforms (WebLOAD, LoadRunner, NeoLoad) cost real money, cover packaged applications and non-HTTP protocols, record scripts instead of hand-writing them, and ship analysis that a QA lead can read without a data engineer. Hybrids like BlazeMeter sell a managed cloud on top of the free engines. Most wrong tool choices come from picking a family that does not match who will actually own the tests.
How we compared them
Eight criteria, weighted by what breaks enterprise evaluations in practice: protocol and technology coverage (can it test what you actually run, not just REST), script authoring and maintenance effort (recorder, correlation, language), real-browser capability, scale and load-generation topology (on-prem, cloud, hybrid), analysis and root-cause tooling (APM integrations, dashboards), CI/CD fit, total cost including the paid layer that “free” tools eventually need, and the honest fit-for-team question. Where a vendor makes a claim we could not verify on its own site or in independent reviews, it is not here.
1. WebLOAD (RadView)
What it is: A commercial load and performance testing platform, on the market since 1993, that records user journeys through a proxy, generates JavaScript scripts, and runs them from on-premises load generators, the customer’s own cloud account, or as SaaS. Used by enterprises including GE HealthCare, Digital River, eBay and CBC.
Where it is strong: Breadth without a per-protocol price tag — HTTP/2, WebSocket, SOAP/REST, JMS, MQTT/AMQP, plus packaged applications such as SAP NetWeaver, Oracle Forms, PeopleSoft, Siebel, Salesforce and SharePoint are covered in one license (full list on the supported technologies page). The correlation engine recognizes server-side dynamic values (session IDs, order numbers) and client-side ones (timestamps) and replaces them automatically, which is the single biggest time sink when teams move off JMeter. Real-browser testing runs through a Selenium integration, so front-end-heavy SPAs are measured as users experience them, not just at the protocol level. Root-cause analysis integrates with Dynatrace, AppDynamics, New Relic and Nagios, and an AI “Explainer” turns dashboard graphs into plain-language findings. Jenkins, Git and CI pipelines are supported.
Where to look elsewhere: If your entire estate is REST APIs owned by developers who live in Git and Grafana, k6 or Gatling will feel more native and cost less. WebLOAD’s strongest returns come when the test surface is mixed — web, API, packaged apps, WebSocket — and when the people running tests are QA or performance engineers rather than the developers who wrote the service.
Pricing: Published on the pricing page: a 15-day free trial with no credit card, a Pro monthly subscription from $499/month, and Enterprise licensing scoped from 100 to 100,000+ virtual users with SLA support. Unlike most enterprise tools in this list, the entry price is public.
2. Apache JMeter
What it is: The open-source workhorse since 1998, Apache 2.0 licensed, with the largest community and plugin ecosystem in the category. Current stable release is 5.6.3 (January 2024); JMeter 6.0 exists only as nightly builds as of this writing (jmeter.apache.org).
Where it is strong: Native samplers for HTTP/S, JDBC, JMS, LDAP, FTP, SMTP, TCP and Java requests, so backend and database load tests need no license. Everything is customizable in Java or Groovy, CI/CD integration is mature, and if you have a JMeter skill on the team, getting a first test running is fast.
Where it hurts: JMeter works at the protocol level and does not execute JavaScript, so single-page apps built in React or Angular cannot be tested as a browser would experience them (reference). GUI mode is for authoring only — the documented default heap is 1 GB and running load from the GUI will freeze it. Correlation of dynamic values is manual (regex and JSON extractors), reporting is a static HTML dashboard, and distributed testing is a hand-built master/worker topology. Reviewers on TrustRadius summarize it as “resource-intensive” with a UI that “can be improved a lot.”
The real cost of free: Teams that outgrow a single load generator typically buy a JMeter-as-a-service layer. BlazeMeter’s published tiers run $149/month (1,000 users) to $649/month (5,000 users); OctoPerf starts at $99 per test and $999/month for unlimited runs. Budget for that, or for the engineer-hours that replace it. See our JMeter alternative page for a migration path.
3. Grafana k6
What it is: A Go-based, open-source load testing engine scripted in JavaScript or TypeScript, owned by Grafana Labs, with a managed cloud (Grafana Cloud k6). Natively supports HTTP/1.1, HTTP/2, WebSocket and gRPC (docs), with a browser module for real-browser tests and an extension system (xk6) for SQL, Kafka, Redis and more.
Where it is strong: Efficiency and developer ergonomics. Practitioners report tens of thousands of virtual users from one machine at a fraction of JMeter’s memory. Tests are plain code in Git, run from the CLI, and stream results into Grafana, Prometheus or Datadog. The k6 Studio 2.0 release (August 2026) added browser recording and AI-assisted autocorrelation, closing the long-standing “no recorder” gap.
Where it hurts: JavaScript-only scripting is a barrier for QA staff who are not developers, and the most common G2 complaints are exactly that plus “reporting can be limiting” outside Grafana Cloud. There is no native support for SAP GUI, Citrix or other desktop and packaged-app protocols — the official protocol list stops at HTTP, WebSocket and gRPC. UI-level load testing is newer and, per reviewers, weaker than API testing.
Pricing: The open-source engine is free. Grafana Cloud k6 offers 500 virtual-user-hours per month free, a Pro tier at $19/month plus $0.15 per VUh, and an Enterprise tier with a $25,000/year minimum. Note the unit: 1,000 VUs for one hour is 1,000 VUh, or $150 on Pro — cheap for short API tests, expensive for long soak tests. We compare the two developer favorites in detail in k6 vs JMeter vs WebLOAD.
4. OpenText LoadRunner (Professional / Enterprise / Core Performance Engineering)
What it is: The incumbent enterprise suite, renamed by OpenText in 2024–25 to Professional Performance Engineering (formerly LoadRunner Professional), Enterprise Performance Engineering (LoadRunner Enterprise) and Core Performance Engineering (LoadRunner Cloud) — OpenText’s own explanation is that the products are unchanged under new names.
Where it is strong: Nobody matches the protocol depth — SAP GUI, Citrix, RDP, Oracle NCA, Tuxedo, mainframe terminals and dozens more (protocol reference). The Controller and Analysis modules are mature, the 2025 releases added “Aviator” AI assistants for scripting and analysis, and for a regulated enterprise with a 15-year-old SAP landscape it is often the only tool that can record the workflow.
Where it hurts: Cost and friction. Pricing is quote-only across all editions (TrustRadius), licensed per virtual user and, historically, per protocol bundle. The most consistent review themes on G2 and PeerSpot are “the price can be aligned to more competitive,” a steep learning curve with C-based VuGen scripting, Windows-only tooling, and support quality. The free Community Edition is capped at 50 virtual users.
Who should switch: Teams paying enterprise LoadRunner renewals to test mostly web and API workloads are paying for protocols they never use. That is the case we lay out on our LoadRunner replacement page, including how recorded scenarios migrate.
5. Gatling
What it is: An open-source, code-first engine (Java, Kotlin, Scala, and now JavaScript/TypeScript) with a paid Enterprise layer for distributed runs, dashboards and SLA assertions. Protocols: HTTP/2, WebSocket, SSE, JMS, MQTT, gRPC (docs).
Strengths and limits: Very efficient per load generator and natural for teams who treat tests as code in CI. No real-browser mode, and the open-source edition is limited to a single machine — distributed testing requires Gatling Enterprise, priced from €89/month (60k VUs, 1-hour tests, 2 seats) to €356/month (180k VUs, 5-hour tests, 10 seats) and custom above that. G2 reviewers flag the learning curve for non-developers and the effort of dynamic data extraction.
6. Locust
What it is: A Python framework where a load test is a Python class. Event-driven (gevent), so it is light on memory, with built-in master/worker distribution and a real-time web UI. A hosted Locust Cloud now exists with usage-based pricing and a small free tier.
Strengths and limits: If your team writes Python, there is nothing simpler to start with, and distributed scale is nearly free. The core is HTTP-only; every other protocol means writing a client. There is no recorder, no real-browser mode, and reporting is deliberately basic (G2). It is the right answer for API load in a Python shop and the wrong answer for a QA team without Python.
7. Tricentis NeoLoad
What it is: An enterprise platform with codeless (drag-and-drop) design, YAML “as-code” descriptors for developers, RealBrowser testing, and very wide packaged-app coverage — SAP, Oracle, Citrix, JMS, MQTT, AMQP, GWT, SharePoint, Dynamics, Guidewire (supported technologies).
Strengths and limits: The closest functional competitor to LoadRunner and WebLOAD for legacy estates, with a friendlier GUI. Pricing is quote-only with no public list anywhere (TrustRadius), and reviewers describe it as “not suitable for small projects because of cost.” Reporting customization and tiered support consistency are the recurring complaints on TrustRadius. We compare the two directly in WebLOAD vs NeoLoad.
8. BlazeMeter (Perforce)
What it is: A SaaS platform that runs your existing JMeter, Taurus and Selenium tests on managed cloud load generators, with a Chrome-extension recorder and CI plugins.
Strengths and limits: The cleanest upgrade path for a JMeter-invested team, and one of the few enterprise-adjacent vendors with public pricing: a free plan (50 concurrent users, 20-minute tests), Basic at $149/month for 1,000 users, Pro at $649/month for 5,000 users, and Unleashed by quote. Because it inherits JMeter’s engine it also inherits JMeter’s protocol gaps, and TrustRadius reviewers call the default reporting “very basic and shallow” and note that cost escalates quickly past roughly 1,000 concurrent users.
Which load testing tool should you pick?
Developer-owned API and microservice testing in CI/CD: k6 first, Gatling if your services are on the JVM, Locust if the team is Python-native. Budget for the cloud tier once you need more than one load generator or shared dashboards.
QA or performance team testing web applications, APIs and packaged apps together: WebLOAD. One license covers the protocol mix, the recorder and correlation engine keep script maintenance manageable for non-developers, and pricing starts at a published $499/month rather than a six-figure quote.
Regulated enterprise with SAP GUI, Citrix, or mainframe workflows: LoadRunner or NeoLoad if those specific protocols are on the critical path and the budget exists; WebLOAD for SAP NetWeaver, Oracle and Salesforce-class packaged apps at a materially lower price point. Run the protocol checklist against your actual applications before you run the demo.
Already invested in JMeter scripts and short on engineers: BlazeMeter or OctoPerf to add scale and reporting without rewriting, or migrate the highest-value scenarios to a platform with automatic correlation once maintenance becomes the bottleneck.
Total cost: what “free” actually costs
A useful exercise before any tool decision is to price a realistic quarter of testing: say 20 test runs a month at 2,000 virtual users for one hour, plus one four-hour soak test. On Grafana Cloud k6 Pro that is roughly 48,000 VUh, or about $7,200/month at the published $0.15/VUh rate before volume discounts. On BlazeMeter it requires the Pro tier ($649/month) and fits inside its 80,000 annual VUh only if you stay under about 6,700 VUh a month, which this scenario does not. A self-hosted JMeter or Locust grid costs nothing in licenses and roughly one engineer-week a month in maintenance. WebLOAD Pro at $499/month covers the monthly subscription tier; Enterprise pricing for 2,000 VUs is quote-based, like every enterprise vendor here. The point is not that any one number wins — it is that the cheapest tool on the license line is rarely the cheapest tool per test hour once the engineers and the cloud meter are counted.
Frequently asked questions
There is no single best tool. For developer-owned API testing in CI/CD, k6 and Gatling lead. For QA teams testing web, API and packaged applications together, WebLOAD offers the broadest coverage at a published price. For SAP GUI, Citrix and mainframe workloads, LoadRunner and NeoLoad remain the reference, at enterprise prices.
Yes for protocol-level API and backend tests when you have Java or Groovy skills and no license budget. Its limits are no JavaScript execution (so no true single-page-app testing), manual correlation, basic reporting and heavy memory use per thread. The last stable release was 5.6.3 in January 2024.
For web, API and packaged-app estates, WebLOAD and NeoLoad are the closest functional replacements; WebLOAD publishes its entry pricing while NeoLoad and LoadRunner are quote-only. For pure API workloads owned by developers, k6 or Gatling replace LoadRunner at a fraction of the cost. If SAP GUI, Citrix or mainframe protocols are on the critical path, verify coverage before switching.
k6 if your team writes JavaScript, tests mostly HTTP, WebSocket or gRPC APIs, and wants results in Grafana; it uses far less memory per virtual user. JMeter if you need JDBC, JMS, LDAP or FTP samplers out of the box, prefer a GUI, or already have a script library. k6’s browser module can drive real Chromium sessions at a much higher cost per virtual user; JMeter has no browser mode at all.
JMeter, k6, Gatling and Locust are open source and free to run on your own machines. Grafana Cloud k6 includes 500 virtual-user-hours a month free, BlazeMeter’s free plan allows 50 concurrent users for 20-minute tests, LoadRunner’s Community Edition is capped at 50 virtual users, and WebLOAD offers a 15-day free trial with no credit card.
Try the enterprise option without the enterprise sales cycle
The fastest way to settle a tool debate is to record one real user journey in each candidate and compare the script you get. WebLOAD’s 15-day free trial needs no credit card, or book a 60-minute demo and bring the application you actually need to test. Pricing is on the pricing page.
Related guides
- What is load testing? Types, tools and how to run one
- k6 vs JMeter vs WebLOAD
- Replacing LoadRunner: what migrates and what doesn’t
- API load testing guide
- How to choose a performance testing tool
Sources
- RadView — WebLOAD supported technologies; WebLOAD pricing
- Apache JMeter downloads and release notes; JMeter component reference
- Grafana Cloud pricing; k6 protocols; k6 Studio 2.0 announcement
- OpenText — What happened to LoadRunner; LoadRunner supported protocols; TrustRadius pricing
- Gatling pricing; Gatling scripting reference
- Locust Cloud pricing; Locust on GitHub
- NeoLoad supported technologies; TrustRadius — NeoLoad pricing
- BlazeMeter pricing; OctoPerf pricing
- Reviews: G2 — k6, G2 — LoadRunner, TrustRadius — JMeter, TrustRadius — BlazeMeter, TrustRadius — NeoLoad
