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locust VS API Tester

Compare locust VS API Tester and see what are their differences

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locust logo locust

An open source load testing tool written in Python.

API Tester logo API Tester

API Tester is the first mobile app to test any type of API on the go. Including REST, GraphQL, WebSocket, SOAP, JSON RPC, XML, HTTP, HTTPS.
  • locust Landing page
    Landing page //
    2021-10-11
  • API Tester Landing page
    Landing page //
    2023-09-06

Main features: - All types of HTTP requests: GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS, COPY, LINK, UNLINK, PURGE, LOCK, UNLOCK, PROPFIND, VIEW. - Powerful GraphQL editor with full-scale experience: body editor with Queries, Mutations, Subscriptions and syntax support; variables editor; documentation explorer; request settings and metadata. - WebSocket testing tool. Handles connection and message exchange via WS or WSS. - API calls with any kind of request data encoding and transfer type (query params, URLEncoded params, FormData, raw data, send files from device storage, cloud, remote server). - Settings. TLS can be skipped, redirects can be disabled, timeouts are adjustable. Weak SSL verification can be enabled and replaced with self-signed certificate. - Import request or collection by curl, link or file from your device. And naturally, there is any type of collection for you: Swagger, OpenAPI, Postman, YAML. - Need to share request in seconds? One tap and done. Deep link and cURL command supported. - Integrations: Shortcuts, Widgets, Apple Watch app.

Additional little things: - Autocomplete for most common headers keys. - Syntax highlighting; Auto formatting. - Optimized for viewing on any device screen. - Cookies. Collect, edit, create. - Request metrics. Measure request duration, response size, status code changing. - History of all request calls. - Request authorisation. Basic Auth with password and username. OAuth with header or query access token.

locust features and specs

  • Scalability
    Locust is designed to distribute the load tests across multiple machines, allowing for high scalability and the ability to simulate millions of users.
  • Python-based
    The tool is written in Python, which makes it highly flexible and suitable for those who are familiar with the language. You can write custom test scenarios easily.
  • Web-based UI
    Locust provides a user-friendly web-based interface that makes it easy to monitor and control the test execution in real-time.
  • Real-time monitoring
    During test execution, you get real-time statistics and charts that help in monitoring the performance and load.
  • Open-source
    Being an open-source tool, Locust allows for community contributions and is free to use, which helps in continuous improvement and support from the user base.

Possible disadvantages of locust

  • Setup Complexity
    Initial setup can be somewhat complex, especially for large scale or distributed tests. Requires experience with Python and potentially other infrastructure setups.
  • Resource Intensive
    Locust can be resource-intensive, requiring significant compute resources, particularly when simulating large numbers of users.
  • Steeper Learning Curve
    Despite its flexibility, the requirement to write test scenarios in Python may present a learning curve for users not familiar with programming.
  • Limited Protocol Support
    Primarily designed for HTTP/HTTPS protocols, Locust might not be suitable for load testing applications that use other protocols without additional customization.
  • Dependence on External Libraries
    While the use of Python offers flexibility, it also means that you might need to rely on external libraries and tools, which can introduce dependency management issues.

API Tester features and specs

  • GraphQL
  • Websocket
  • Debugging APIs

Analysis of locust

Overall verdict

  • Locust is a powerful and flexible tool for load testing, particularly advantageous for teams familiar with Python. Its scalability and ease of setup make it a strong choice for both small and large projects.

Why this product is good

  • Locust (locust.io) is considered a good tool for load testing due to its easy-to-use, scalable, and distributed nature. Written in Python, it allows developers to write simple or complex test scenarios in the same language. It enables the simulation of millions of users by distributing tasks across multiple machines, making it highly valuable for performance testing of websites and applications. The web-based user interface is another advantage, allowing real-time monitoring of test progress and results.

Recommended for

  • Development teams looking for a scalable load testing tool.
  • Organizations that prefer open-source solutions.
  • Projects requiring custom test scenarios in Python.
  • Teams needing real-time monitoring and distributed testing capabilities.

locust videos

+ Add

Locust review - GTA Online guides

More videos:

  • Review - GTA Online: Ocelot Locust Review
  • Review - GTA 5 - DLC Vehicle Customization - Ocelot Locust and Review

API Tester videos

+ Add

7 Reasons Why You Should Become An API Tester | 100% Salary Hike Possible? | TheTestingAcademy

More videos:

  • Review - Talend API Tester: Technical Overview
  • Tutorial - How To Use DevTools As an API Tester? | API Testing Tutorial | Day 29

Category Popularity

0-100% (relative to locust and API Tester)

locust

API Tester

Monitoring Tools
100 100%
Monitoring Tools
0% 0
Developer Tools
0 0%
Developer Tools
100% 100
Website Testing
100 100%
Website Testing
0% 0
APIs
0 0%
APIs
100% 100

User comments

Share your experience with using locust and API Tester. For example, how are they different and which one is better?
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Social recommendations and mentions

Based on our record, locust should be more popular than API Tester. It has been mentiond 61 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

locust mentions (61)

  • 3 Types of Chaos Experiments and How To Run Them
    Use load testing tools like JMeter, Gatling, or Locust to simulate demand spikes and verify that your auto-scaling rules work as expected. This will ensure that your system can handle real-world traffic patterns. - Source: dev.to / about 2 months ago
  • Outgrowing Postgres: How to identify scale problems
    Use load testing tools like Apache JMeter, Gatling, or Locust to measure your application's throughput under various loads and compare it to historical data. - Source: dev.to / 4 months ago
  • Five Advanced Techniques to Improve Automated Testing by 50%
    You should also incorporate performance testing into your daily builds to catch performance regressions early. For this, you can use Locust for load testing. You can also implement performance budgets in your CI/CD pipeline. This will allow you to fail builds that don't meet performance criteria, ensuring performance doesn't degrade over time. - Source: dev.to / 5 months ago
  • Why your FastAPI (or Flask) App performs poorly with high loads
    These tests were done on GCP Cloud Run using a single processor, and 512M RAM machine, and we used Locust, an incredible tool (for Python, LoL). - Source: dev.to / 8 months ago
  • How MySQL Tuning Can Dramatically Improve WordPress Performance
    Our test duration was 2 days. To handle this longer testing period, we switched from BlazeMeter (max test duration of 20 minutes) to Locust, an open-source load-testing tool. - Source: dev.to / 12 months ago
View more

API Tester mentions (18)

  • How to Test APIs for Beginners-API Testing Best Practices🔥
    Manual API testing involves directly interacting with the API using tools like Apidog, API Tester or any other available online tools. - Source: dev.to / 4 months ago
  • All about Postman Collection
    You can also import this collection to the mobile app and test it. This is possible by using the API Tester. - Source: dev.to / over 1 year ago
  • Defect life cycle in API testing ⚙️
    It is worth noting that detecting bugs is not as simple as it may appear at first.That’s why developers and testers must have good testing tools for this. I suggest you try API Tester; you’ll love it! - Source: dev.to / over 2 years ago
  • Status codes in API Testing🆗🆘
    How successful response code looks like in API Tester app. - Source: dev.to / over 2 years ago
  • Top 5 cryptocurrency APIs for developers ©️
    Do you know what is common to all the aforementioned APIs? You can easily access any of them by using the greatest app – API Tester :). - Source: dev.to / over 2 years ago
View more

What are some alternatives?

When comparing locust and API Tester, you can also consider the following products

Apache JMeter - Apache JMeter™.

Postman - The Collaboration Platform for API Development

Loader.io - Loader.io is a simple cloud-based load testing service

Insomnia REST - Design, debug, test, and mock APIs locally, on Git, or cloud. Build better APIs collaboratively for the most popular protocols with a dev‑friendly UI, built-in automation, and an extensible plugin ecosystem.

gatling.io - Gatling is an open-source load testing framework based on Scala, Akka and Netty

Hoppscotch - Open source API development ecosystem

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