Haml VS Simple Form

Compare Haml vs Simple Form and see what are their differences.


HTML Abstraction Markup Language - A Markup Haiku (by haml)

Simple Form

Forms made easy for Rails! It's tied to a simple DSL, with no opinion on markup. (by heartcombo)
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Haml Simple Form
12 7
3,679 8,012
0.6% 0.3%
2.7 6.1
about 1 month ago 2 months ago
Ruby Ruby
MIT License MIT License
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of Haml. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-09-20.

Simple Form

Posts with mentions or reviews of Simple Form. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-06-20.
  • Styling Simple Form forms with Tailwind
    4 projects | dev.to | 20 Jun 2022
    Simple Form gem
  • From partials to ViewComponents: writing reusable front-end code in Rails
    11 projects | dev.to | 3 Jun 2022
    The biggest unclear area that we saw related to view components were forms. There were glimpses of compatibility issues with Rails form helpers in the documentation and we saw a recent effort of the team to mitigate them. Moreover, we were used to building forms with Simple Form which added another variable to the equation. And, in general, we considered the Rails form builders (as well as the Simple Form builder) a system of form-related components in the first place so we were unsure how this would fit into the View Components ecosystem or whether we should even try to do that.
  • Form error in a rails view
    2 projects | reddit.com/r/rails | 10 Nov 2021
    Consider slim: "Slim - A Fast, Lightweight Template Engine for Ruby" http://slim-lang.com and simple_form "GitHub - heartcombo/simple_form: Forms made easy for Rails! It's tied to a simple DSL, with no opinion on markup." https://github.com/heartcombo/simple_form
  • RoR Gems: Pin To Plane For Developing RoR Application
    12 projects | reddit.com/r/TechnoMation | 28 Feb 2021
    8. Simple Form

What are some alternatives?

When comparing Haml and Simple Form you can also consider the following projects:

Formtastic - A Rails form builder plugin with semantically rich and accessible markup.

Slim - Slim is a template language whose goal is to reduce the syntax to the essential parts without becoming cryptic.

Liquid - Liquid markup language. Safe, customer facing template language for flexible web apps.

Cocoon - Dynamic nested forms using jQuery made easy; works with formtastic, simple_form or default forms

Rails Bootstrap Forms - Official repository of the bootstrap_form gem, a Rails form builder that makes it super easy to create beautiful-looking forms using Bootstrap 5.

Hamlit - High Performance Haml Implementation

Reform - Form objects decoupled from models.

Sanitize - Ruby HTML and CSS sanitizer.

ActiveForm - Create nested forms with ease.


Mustache - Logic-less Ruby templates.

ComfyBootstrapForm - Rails form builder for Bootstrap 4 markup that actually works!