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Flask vs Sinatra: What are the differences?

What is Flask? a microframework for Python based on Werkzeug, Jinja 2 and good intentions. Flask is intended for getting started very quickly and was developed with best intentions in mind.

What is Sinatra? Classy web-development dressed in a DSL. Sinatra is a DSL for quickly creating web applications in Ruby with minimal effort.

Flask and Sinatra can be categorized as "Microframeworks (Backend)" tools.

"Lightweight" is the primary reason why developers consider Flask over the competitors, whereas "Lightweight" was stated as the key factor in picking Sinatra.

Flask and Sinatra are both open source tools. It seems that Flask with 44.8K GitHub stars and 12.6K forks on GitHub has more adoption than Sinatra with 10.6K GitHub stars and 1.89K GitHub forks.

reddit, Lyft, and MIT are some of the popular companies that use Flask, whereas Sinatra is used by SendGrid, thoughtbot, and New Relic. Flask has a broader approval, being mentioned in 502 company stacks & 509 developers stacks; compared to Sinatra, which is listed in 92 company stacks and 33 developer stacks.

What is Flask?

Flask is intended for getting started very quickly and was developed with best intentions in mind.

What is Sinatra?

Sinatra is a DSL for quickly creating web applications in Ruby with minimal effort.

Want advice about which of these to choose?Ask the StackShare community!

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    What are some alternatives to Flask and Sinatra?
    Django is a high-level Python Web framework that encourages rapid development and clean, pragmatic design.
    By using non-blocking network I/O, Tornado can scale to tens of thousands of open connections, making it ideal for long polling, WebSockets, and other applications that require a long-lived connection to each user.
    Express is a minimal and flexible node.js web application framework, providing a robust set of features for building single and multi-page, and hybrid web applications.
    Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient, perfect for data-intensive real-time applications that run across distributed devices.
    Lots of people use React as the V in MVC. Since React makes no assumptions about the rest of your technology stack, it's easy to try it out on a small feature in an existing project.
    See all alternatives
    Decisions about Flask and Sinatra
    No stack decisions found
    Interest over time
    Reviews of Flask and Sinatra
    Avatar of mjhea0
    Software Engineer at TestDriven Labs
    Review ofFlaskFlask

    Flask is a light, yet powerful Python web framework perfect for quickly building smaller web applications. It's a "micro-framework" that's easy to learn and simple to use, so it's perfect for those new to web development as well as those looking to rapidly develop a web application.

    How developers use Flask and Sinatra
    Avatar of datapile
    datapile uses SinatraSinatra

    Scalatra (we had to pick Sinatra on StackShare since Scalatra is has not yet been officially added) is the slickest (not to be confused with Slick for Scala) web/applet server framework we've had the pleasure of playing with in Scala.

    For all intensive purposes, Scalatra is the Scala version of Sinatra (which for anyone who doesn't know is a Ruby web server DSL).

    Avatar of Jack Littleton
    Jack Littleton uses FlaskFlask

    I use Flask for times when I need to create a REST API that interfaces with other Python code, or there is no specific reason why I'd want to use Node.JS. I prefer Flask because of its small learning curve, allowing me to get started coding as quickly as possible

    Avatar of Cloudify
    Cloudify uses FlaskFlask

    This lightweight web framework enables quick REST API development while enabling easy clustering, and the usage of multiple worker processes required to scale the REST API service to meet high volume requirements.

    Avatar of Sail Tactics
    Sail Tactics uses FlaskFlask

    Service to query NOAA weather forecasts data and service to build tidal current forecast maps using AWS EC2 and Geoserver

    Avatar of Karma
    Karma uses SinatraSinatra

    We use Sinatra a lot. I love Sinatra for APIs. It's really simple, really lightweight. It's awesome.

    Avatar of OnlineCity
    OnlineCity uses FlaskFlask

    Flask drives our APIs, both the Website APIs and the majority of the REST Messaging APIs

    Avatar of papaver
    papaver uses FlaskFlask

    used flask for a few personal projects. enjoyed its simplicity and ease of use.

    Avatar of David Sugar
    David Sugar uses SinatraSinatra

    Typically used for web api services such as in piwitch

    Avatar of EdgeTheory
    EdgeTheory uses SinatraSinatra

    Microservices, RESTful APIs

    Avatar of Satoru Ishikawa
    Satoru Ishikawa uses SinatraSinatra


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