Software Alternatives, Accelerators & Startups

CircuitSim VS HttpMaster

Compare CircuitSim VS HttpMaster and see what are their differences

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CircuitSim logo CircuitSim

Design and simulate electronic circuits in your browser. Full SPICE engine, 3,000+ components, schematic editor, and waveform charts. Free to get started.

HttpMaster logo HttpMaster

HttpMaster is a professional software tool for testing and debugging HTTP applications, primarily aimed at REST API applications and web services.
  • CircuitSim Circuit Editor
    Circuit Editor //
    2026-08-11
  • HttpMaster Main window
    Main window //
    2024-06-13

Core HttpMaster features are: * HttpMaster project to store complete definition of API calls in one single place. * Broad set of http properties. * Dynamic parameters to simulate variations of input data or create global API values. * Response data validation with logical expressions. * Request chaining to use data from previous request with the next request. * Extensive data upload support, including 'multipart/form-data'. * Request data builder for creating request body with an optional dynamic parameters. * Request item execution with detailed progress monitoring. * Execution groups to create batches of requests. * Comprehensive execution data review and management. * Additional tools (basic request tool for ad-hoc execution, command line interface, OpenAPI import, etc).

CircuitSim

$ Details
freemium $2.99 / Monthly (15 Components per circuit)
Platforms
-

CircuitSim features and specs

  • Free and accessible
    CircuitSim is a free, browser-based (and downloadable) digital logic circuit simulator, making it easy for students and hobbyists to access without any cost or licensing barriers.
  • Educational focus
    Designed primarily for teaching digital logic design, it provides an intuitive way to build and test circuits, making it popular in academic settings like computer science and engineering courses.
  • Simple, intuitive interface
    The drag-and-drop interface for placing gates, wires, and components is user-friendly, especially for beginners learning digital logic concepts for the first time.
  • Subcircuit support
    Users can create subcircuits and reuse them as components in larger designs, which helps in building more complex systems in a modular and organized way.
  • Open-source project
    CircuitSim is open-source, allowing developers and educators to inspect, modify, or contribute to the tool, and fostering community-driven improvements.

HttpMaster features and specs

  • HttpMaster project to store complete definition of API calls in one single place
  • Broad set of http properties
  • Dynamic parameters to simulate variations of input data or create global API values
  • Response data validation with logical expressions
  • Request chaining to use data from previous request with the next request
  • Extensive data upload support, including 'multipart/form-data'
  • Request data builder for creating request body with an optional dynamic parameters
  • Request item execution with detailed progress monitoring
  • Execution groups to create batches of requests
  • Comprehensive execution data review and management
  • Basic request tool
  • Command line interface
  • OpenAPI import
  • Prepare cURL commands

Analysis of HttpMaster

Overall verdict

  • Overall, HttpMaster is a solid choice for individuals and teams looking for a reliable and efficient tool to test, debug, and document web applications and services.

Why this product is good

  • HttpMaster is considered a good tool because it offers comprehensive testing capabilities for web services and REST APIs. It provides developers and testers with features such as request chaining, parameterization, data validation, and response validation. It supports a wide array of HTTP methods and enables easy automation of testing processes with its command line interface. Additionally, it has a user-friendly interface that simplifies the construction of HTTP requests.

Recommended for

    HttpMaster is well-suited for developers, QA engineers, and testers who need to perform end-to-end testing of web APIs. It's particularly beneficial for those who require a versatile testing solution with both automated and manual testing features. It's also ideal for teams that need to validate the functionality, performance, and security of their web apps through an intuitive platform.

CircuitSim videos

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HttpMaster videos

Testing with HttpMaster 02

More videos:

  • Tutorial - Web Services Testing with HTTP Master

Category Popularity

0-100% (relative to CircuitSim and HttpMaster)
Circuit Simulators
100 100%
0% 0
API Tools
0 0%
100% 100
Circuit Design
100 100%
0% 0
Developer Tools
0 0%
100% 100

Questions & Answers

As answered by people managing CircuitSim and HttpMaster.

How would you describe the primary audience of your product?

CircuitSim's answer

Educators and students, mostly. The core user teaches circuits somewhere that desktop software is not an option: community college electronics programs, university ECE labs, online courses, and K-12 engineering classes where students are on Chromebooks. Outside the classroom, hobbyists and working engineers use CircuitSim for quick analog and digital simulation without installing anything. A large share of new users right now are instructors moving their courses over from Digilent's Multisim Live before it retires in September 2026.

HttpMaster's answer:

Developers and testers.

Who are some of the biggest customers of your product?

CircuitSim's answer

Community college electronics and engineering technology programs University ECE departments running browser-based circuit labs K-12 engineering and CTE courses on Chromebooks Instructors migrating classes from Digilent's Multisim Live ahead of its September 2026 retirement

HttpMaster's answer:

  • Microsoft
  • Oracle
  • Google

Why should a person choose your product over its competitors?

CircuitSim's answer

CircuitSim earns the choice when the constraint is the browser: students on Chromebooks, online courses, schools where IT will not install desktop software. Within that space, CircuitSim pairs true SPICE simulation with classroom licensing, private student seats that need no login, and an importer for Digilent's Multisim Live files.

HttpMaster's answer:

Performance, simple UI, resource friendly.

Which are the primary technologies used for building your product?

HttpMaster's answer:

Microsoft .NET.

What makes your product unique?

CircuitSim's answer

CircuitSim runs a real SPICE engine entirely in the browser. Simulation results match what desktop SPICE tools produce, with nothing to install. On top of the simulator there is a large searchable component catalog and classroom groups with private student seats: a teacher shares a join link and students work without creating accounts, which keeps classes clear of the student-privacy problems that come with provisioning accounts. CircuitSim also imports designs from Digilent's Multisim Live, which matters right now because Digilent is retiring Multisim Live in September 2026.

User comments

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What are some alternatives?

When comparing CircuitSim and HttpMaster, you can also consider the following products

Multisim - Multisim is industry standard SPICE simulation and circuit design software for analog, digital, and power electronics in education and research.

Hoppscotch - Open source API development ecosystem

CircuitLab - Sketch, simulate, and share your circuits, entirely in your browser -- no install required.

API Fortress - API performance, accuracy, and uptime testing. Without code.

DCACLab - Electronic circuit simulator for STEM works online, Simulate and troubleshoot broken circuits in a rich simulation environment, easy to learn.

Postman - The Collaboration Platform for API Development