Software Alternatives & Startups

Tkinter VS FastAPI

Compare Tkinter VS FastAPI and see what are their differences

Tkinter

Tkinter is a Python wrapper for Tcl/Tk that offers classes to create various graphical user interfaces.

Rating
0 reviews
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?

Based on our record, FastAPI should be more popular than Tkinter. It has been mentioned 315 times since March 2021.

social mentions
41 vs 315
Development popularity
100% vs 0%
alternatives listed
74 vs 240+

Base details

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

Tkinter
FastAPI
Website docs.python.org fastapi.tiangolo.com
Pricing —
Open source Free
Company — Startup from Colombia
Listed in

Features and specs

What each product offers, as listed by its team.

Tkinter 5 features
FastAPI 7 features
  • Built-in Standard Library
    Tkinter comes bundled with Python, so there is no need for additional installations. This makes it highly accessible and quick to set up for projects.
  • Ease of Use
    Tkinter provides a simple syntax and an easy-to-understand system for building GUI applications, making it ideal for beginners who are just starting with programming.
  • Cross-Platform Compatibility
    Tkinter applications can run on multiple operating systems like Windows, macOS, and Linux without modification, which ensures broader audience reach.
  • Strong Community Support
    Being part of Python's standard library means that Tkinter benefits from Python's extensive community support, with plenty of tutorials and resources available online.
  • Object-Oriented Approach
    Tkinter supports an object-oriented programming model, which allows for structuring code in a manageable way, especially for larger applications.

Possible disadvantages

  • Limited Widget Set
    Compared to more modern GUI frameworks, Tkinter has a limited set of widgets and may not support advanced user interface features that newer applications might require.
  • Outdated Look and Feel
    The default Tkinter themes and styles may look outdated by modern standards, which might not be suitable for applications where a contemporary design is important.
  • Performance Limitations
    Tkinter may not perform well with applications requiring high-performance graphics or real-time updates, as it is not optimized for these tasks.
  • Learning Curve for Complex Applications
    While simple to use for basic applications, building more complex UI components can become challenging and might require a deeper understanding of the Tkinter framework.
  • Lack of Advanced Features
    Some advanced features like drag-and-drop, custom widgets, or native look and feel on different platforms might be either missing or require additional work to implement.
  • 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.

Tkinter
FastAPI

No analysis of Tkinter yet.

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.

Tkinter 3 videos + Add
FastAPI 3 videos + Add

Which is Better Kivy Or Tkinter? - Python Kivy GUI Tutorial #42

More videos

  • - Python Programming 93 - Review of Tkinter
  • - Tkinter Course - Create Graphic User Interfaces in Python Tutorial

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
Tkinter
FastAPI
100% 100%
0% 0%
7% 7%
93% 93%
0% 0%
100% 100%

User comments

Share your experience with using Tkinter 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.

Tkinter no reviews yet
FastAPI 5.0 · 1 review

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  • 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.

Tkinter 41 mentions
FastAPI 315 mentions
  • Migrating from Go to Rust
    Python has sqlite3[0], curses (tui) [1], and tkinter[2] in the stdlib. [0] https://docs.python.org/3/library/sqlite3.html [1] https://docs.python.org/3/library/curses.html [2] https://docs.python.org/3/library/tkinter.html. - Source: Hacker News / 5 months ago
  • Stdwin: Standard window interface by Guido Van Rossum [pdf]
    The other popular option for cross-platform UI apps was Tcl/Tk: https://en.wikipedia.org/wiki/Tk_(software) ...which even leaked into other language ecosystems like Python: https://docs.python.org/3/library/tkinter.html. - Source: Hacker News / 7 months ago
  • Vibe coding: Time Zone Clock
    ChatGPT understood the hardware and it's limitations, the touchscreen monitor and along with my requirements, we found and used Tkinter which runs on Python. The benefits were it was lightweight, no web stack, runs fast, no browser, no... - Source: dev.to / 10 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 / 8 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 / 14 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 / 23 days ago

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Alternatives to Tkinter and FastAPI

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