Software Alternatives & Startups

Processing VS FastAPI

Compare Processing VS FastAPI and see what are their differences

Processing

C++ and Java programming at the speed of thought.

Rating
0 reviews
Pricing
Open source
FastAPI

FastAPI is an Open Source, modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints.

Rating
5.0 · 1 review
Pricing
Open source Free
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Which is more popular?

Processing might be a bit more popular than FastAPI. We know about 346 links to it since March 2021 and only 315 links to FastAPI.

social mentions
346 vs 315
3D popularity
100% vs 0%
alternatives listed
65 vs 240+

Base details

Website, pricing, platforms and company facts side by side.

Processing
FastAPI
Website processing.org fastapi.tiangolo.com
Pricing
Open source
Open source Free
Company — Startup from Colombia
Listed in

About Processing and FastAPI

In their own words, as submitted to SaaSHub.

Processing
FastAPI

We recommend LibHunt Processing for discovery and comparisons of trending Processing projects.

Read more about Processing

No description of FastAPI yet.

Features and specs

What each product offers, as listed by its team.

Processing 6 features
FastAPI 7 features
  • Ease of Use
    Processing has a simple and straightforward syntax, making it accessible for beginners and quick for prototyping.
  • Visualization Capabilities
    Processing excels at creating visually appealing graphics, animations, and interactive content.
  • Active Community
    Processing has a large, active community that contributes tutorials, examples, libraries, and forums support.
  • Cross-Platform
    Processing is cross-platform, allowing developers to run their sketches on Windows, macOS, and Linux.
  • Educational Focus
    Processing is designed with teaching in mind and is widely used in educational settings to teach programming concepts.
  • Integration with Other Tools
    Processing can be easily integrated with other creative coding tools and software such as Arduino.

Possible disadvantages

  • Performance Limitations
    Processing may not be the best choice for highly performance-critical applications, especially those requiring intense computation.
  • Limited Functionality
    While great for graphics and animation, Processing might be limited for other types of development like database-driven applications.
  • Java Dependency
    Processing is built on top of Java, which may not be ideal or preferred for all users, especially those who do not wish to work with Java.
  • Scalability Issues
    Processing sketches might face challenges when scaling up to large or more complex projects.
  • Basic IDE
    The Processing IDE is quite basic compared to more advanced development environments, potentially limiting for complex project management.
  • High Performance
    Built on Starlette and Pydantic, FastAPI is one of the fastest frameworks for Python, providing high performance due to its asynchronous request handling.
  • Automatic Interactive API Documentation
    FastAPI automatically generates interactive API documentation via Swagger UI and ReDoc, which are very helpful for development and testing.
  • Type Checking and Validation
    With Pydantic models and Python type hints, FastAPI provides automatic data validation and type checking, reducing the chance of runtime errors.
  • Ease of Use
    Its syntax and design make it easy to learn for Python developers, offering a smooth development experience while reducing boilerplate code.
  • Asynchronous Support
    FastAPI supports asynchronous programming, allowing for better performance for I/O-bound operations, making it optimal for handling many simultaneous connections.
  • Extensive Documentation
    It has comprehensive and well-structured documentation, which is very useful for both beginners and advanced users.
  • Community and Ecosystem
    FastAPI has a growing community and ecosystem, with many plugins and integrations available to extend its functionality.

Possible disadvantages

  • Learning Curve for Asynchronous Programming
    Although FastAPI itself is easy to learn, grasping the concepts of asynchronous programming in Python can be challenging for beginners.
  • Complex Dependencies
    Using Pydantic for advanced validation can make the request models complex, requiring a deeper understanding of Pydantic and its functionalities.
  • Early Stage Libraries
    Some third-party libraries and extensions specifically tailored for FastAPI might still be in early stages of development and lack long-term stability.
  • Limited Real-World Examples
    Although the documentation is extensive, there might be limited real-world examples and case studies readily available compared to more mature frameworks.
  • Deployment Complexity
    Deploying FastAPI applications might be more complex in comparison to traditional synchronous frameworks, mainly due to the need for asynchronous server setups.

Analysis

An editorial look at what each product does well and who it suits.

Processing
FastAPI

Overall verdict

  • Yes, Processing is considered to be good, especially for artists, designers, and beginners who are interested in creative coding. Its simplicity and focus on visual output make it an excellent entry point for those looking to merge programming with art.

Why this product is good

  • Processing is a flexible software sketchbook and a language for learning how to code within the context of the visual arts. It's highly appreciated for its simplicity and ease of use, making it accessible for beginners. Additionally, it has a strong community and a wealth of tutorials and examples that help users to quickly get started with creating visual art and interactive media.

Recommended for

  • Artists and designers who want to learn coding
  • Educators looking for a tool to teach coding in a visual context
  • Beginners interested in interactive graphics and visualizations
  • Developers who want to quickly prototype visual ideas

Overall verdict

  • FastAPI is widely regarded as a good choice, especially for applications that require high performance, scalability, and modern Python features. It is suitable for both simple and complex projects, making it a versatile tool in the web development ecosystem.

Why this product is good

  • FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.7+ based on standard Python type hints. It is built on top of Starlette for web framework capabilities and Pydantic for data validation and settings management. FastAPI is known for its excellent performance, automatic generation of interactive API documentation (with Swagger and Redoc), and support for asynchronous programming. Developers appreciate its ease of use, detailed documentation, and helpful error messages.

Recommended for

  • Developers building RESTful APIs
  • Teams looking for a high-performance ASGI-based web framework
  • Projects that require asynchronous programming capabilities
  • Applications needing automatic generation of interactive API documentation
  • Python developers who prefer utilizing type hints for code clarity and validation

Videos

Walkthroughs and reviews on video.

Processing 3 videos + Add
FastAPI 3 videos + Add

Processing - Kickstarter Board Game Review

More videos

  • - Processing or p5.js? My opinions
  • - Processing: A Game of Serving Humanity Review

FastAPI from the ground up

More videos

  • - 30 Days of Python - Day 14 - Web App with Flask, FastAPI, ngrok, and Invictify - Python TUTORIAL
  • - [PT] Python - API com FastAPI - Chat | twitch.tv/codeshow

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
Processing
FastAPI
100% 100%
3D
0% 0%
0% 0%
100% 100%
100% 100%
0% 0%
0% 0%
100% 100%

User comments

Share your experience with using Processing and FastAPI. For example, how are they different and which one is better?

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Reviews and articles

External articles and on-site reviews we used to compare the two products.

Processing no reviews yet
FastAPI 5.0 · 1 review

We have no reviews of Processing yet. Be the first one to post

  • Rated 5/5 by Kurslog team
    SaaSHub review
    · Apr 2026

    When our backend team needs to build services for data parsing, aggregators, or high-load APIs, FastAPI is our absolute go-to choice. It completely lives up to its name-development speed is outstanding. The...

  • The 20 Best Laravel Alternatives for Web Development
    tms-outsource.com · Jan 2024

    FastAPI, as the name hints, is a swift mover. Built on Starlette, it’s all about speed and performance with Python. Crafting API masterpieces at the speed of light, now that’s something.

  • 25 Python Frameworks to Master
    kinsta.com · Oct 2023

    Since its release in 2018, it has rapidly gained popularity due to its great performance and simplicity. In fact, according to PyPi Stats, FastAPI has over 9 million monthly downloads, surpassing even full-stack...

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Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

Processing 346 mentions
FastAPI 315 mentions
  • Ink and Switch Interactive Homepage
    I don’t really mind the inconsistencies, it is just something fun and playful to discover and I believe the imperfections add to the charme of such things. It reminds me of the little sketches I made with Processing[1] years ago, when... - Source: Hacker News / 22 days ago
  • Generative Art over the Years
    Reading this makes me want to fire up Processing [1] again. I remember spending hours and days with it in my early twenties. The immediacy of writing a few simple commands, hitting "Run" and seeing graphical output is still unsurpassed... - Source: Hacker News / 6 months ago
  • I got paid minimum wage to solve an impossible problem.
    I built a visual editor in Processing (a Java tool for people who like making things look cool), so I could easily map out the store and export the resulting graph. - Source: dev.to / 9 months ago

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  • Clean Architecture in Python with FastAPI, FastStream, and Dishka
    Using FastAPI, FastStream, and dishka lets us follow Clean Architecture principles and almost avoid leaky abstractions. The prototype also used Pydantic and SQLAlchemy. I do not focus on them because these technologies are already... - Source: dev.to / 6 days ago
  • QueuePool Limit Reached - When FastAPI Runs Out of Database Connections
    If your FastAPI app talks to a database through SQLAlchemy, chances are high you will meet it sooner or later. Not on your machine, of course. It shows up in production, after a few quiet hours, under load. And the reflex is always the... - Source: dev.to / 12 days ago
  • ContexteTech is now open source: a hub for everything that adapts an AI model
    API: FastAPI with async SQLAlchemy, PostgreSQL 17 for data, Redis for caching and rate limits. The cache is invalidated by a single version counter bumped on every write: no fine-grained purging to manage. - Source: dev.to / 21 days ago

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Alternatives to Processing and FastAPI

When comparing Processing and FastAPI, you can also consider the following products.