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AngularJS VS Opa

Compare AngularJS VS Opa and see what are their differences

AngularJS logo AngularJS

AngularJS lets you extend HTML vocabulary for your application. The resulting environment is extraordinarily expressive, readable, and quick to develop.

Opa logo Opa

Opa is an open source, simple and unified platform for writing web applications.
  • AngularJS Landing page
    Landing page //
    2022-04-15
  • Opa Landing page
    Landing page //
    2021-10-16

AngularJS features and specs

  • Two-way data binding
    AngularJS's two-way data binding feature synchronizes data between the model and the view components, reducing the amount of boilerplate code required for data manipulation and improving ease of use.
  • Dependency Injection
    The built-in dependency injection mechanism in AngularJS facilitates better organization and management of services, making the code more modular, testable, and reusable.
  • Modular Development
    AngularJS allows developers to break down applications into modules. This modular approach helps in better code organization, easier maintenance, and parallel development.
  • Community and Ecosystem
    Backed by Google, AngularJS has a large and active community. This extensive support system provides a wealth of resources, plugins, and third-party tools that can facilitate the development process.
  • Directives
    Directives in AngularJS allow developers to extend HTML with new attributes and elements, enabling the creation of custom and reusable components with ease.
  • MVVM Architecture
    The Model-View-ViewModel (MVVM) architecture promotes the separation of concerns, allowing developers to work on different parts of the application without interfering with each other.

Possible disadvantages of AngularJS

  • Performance Issues
    AngularJS's two-way data binding can induce performance issues in large applications due to the constant checking and updating of the binding, which can impact the overall application speed.
  • Steep Learning Curve
    The complexity of AngularJS, with its various concepts such as directives, dependency injection, and MVVM architecture, can present a steep learning curve for new developers.
  • Migration Challenges
    Migrating from AngularJS to newer versions like Angular (2+), which are fundamentally different, poses significant challenges and often requires a complete codebase rewrite.
  • Verbose Code
    AngularJS's syntax can sometimes lead to verbose and complicated code, which can be difficult to read and maintain, especially for large-scale applications.
  • Limited Mobile Support
    Despite its strengths, AngularJS does not offer the same level of performance optimization for mobile applications, making it less ideal for mobile-first development compared to some other frameworks.
  • Legacy Framework
    AngularJS is considered a legacy framework with a focus shifted towards Angular (2+). As a result, it receives fewer updates and less community attention compared to newer frameworks.

Opa features and specs

  • Full-Stack Development
    Opa is designed to be a full-stack language, which means it can handle both the client-side and server-side development within a single codebase. This reduces the need for context switching between multiple programming languages and can simplify the development process.
  • Security Features
    Opa includes built-in security features such as automatic data validation and prevention of common web vulnerabilities like XSS and SQL injection, potentially reducing the number of security issues in web applications.
  • Concurrency Support
    Opa natively supports asynchronous programming and concurrency, allowing developers to write efficient, non-blocking code without needing additional frameworks or libraries.
  • Integrated Web Development
    The language integrates multiple aspects of web development such as database, server, and client interactions, aiming to streamline the process and reduce the complexity of managing disparate technologies.

Possible disadvantages of Opa

  • Limited Adoption
    Opa is not widely adopted, which can result in a smaller community and fewer resources, tutorials, or third-party libraries compared to more popular web development languages and frameworks.
  • Learning Curve
    Developers new to Opa might face a steep learning curve due to its unique approach and syntax, which differs considerably from more traditional web development languages.
  • Tooling and Ecosystem
    The tooling and ecosystem around Opa may not be as mature or robust as those surrounding other more established languages, potentially leading to challenges in finding compatible tools or plugins.
  • Performance Overheads
    While Opa abstracts many details for developers, this abstraction can introduce performance overheads compared to languages that allow more fine-tuned control over performance optimizations.

AngularJS videos

What Is AngularJS

More videos:

  • Review - AngularJS Fundamentals In 60-ish Minutes

Opa videos

My food review at Opa of Greece!

More videos:

  • Review - Classic Game Room - OPA OPA review for Sega Mark III

Category Popularity

0-100% (relative to AngularJS and Opa)
Javascript UI Libraries
Web Frameworks
0 0%
100% 100
JavaScript Framework
93 93%
7% 7
Developer Tools
74 74%
26% 26

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare AngularJS and Opa

AngularJS Reviews

Top JavaScript Frameworks in 2025
AngularJS is an open-source framework used for developing web applications. Google developed it and made it open-source in 2010. It is one of the top choices of developers when it comes to building web applications using JavaScript. Hire web developers from SolGuruz and allow us to help you build white-label solutions.
Source: solguruz.com
20 Next.js Alternatives Worth Considering
Yes, Angular Universal provides server-side rendering capabilities for Angular applications. This tool allows Angular apps to benefit from SSR, improving performance and SEO by rendering pages on the server before sending them to the client.
The 20 Best Laravel Alternatives for Web Development
NestJS is a Node.js framework that’s inspired by Angular, and guess what? It’s written in TypeScript. Building with Typescript is like you’re navigating with the stars. It’s all about sturdy architecture, a server-side framework that enjoys the scripting superness while piling on extra sturdiness.
Top 9 best Frameworks for web development
The best frameworks for web development include React, Angular, Vue.js, Django, Spring, Laravel, Ruby on Rails, Flask and Express.js. Each of these frameworks has its own advantages and distinctive features, so it is important to choose the framework that best suits the needs of your project.
Source: www.kiwop.com
9 Best JavaScript Frameworks to Use in 2023
Angular.js is a powerful JavaScript-based web development framework. It has been designed to make web development more efficient and easy to use. Angular.js is based on the Model-View-Controller (MVC) architecture, which makes it easy to develop dynamic web applications. It also provides many features that make web development more efficient, such as data binding, dependency...
Source: ninetailed.io

Opa Reviews

We have no reviews of Opa yet.
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Social recommendations and mentions

Based on our record, AngularJS seems to be a lot more popular than Opa. While we know about 50 links to AngularJS, we've tracked only 3 mentions of Opa. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

AngularJS mentions (50)

  • Between Diapers and Development – How My Blog Came to Life with Eleventy
    To maximize learning, I could choose something new. Normally, I consider that a valid reason. But given my limited time, that wasn't a priority for me. Another criterion could be long-term viability: Is there a large core team and an active community? Well, who still remembers AngularJS? From Google? And didn’t Facebook/Meta start Jest? I wouldn’t rely too much on that. - Source: dev.to / about 1 month ago
  • 11 Quick and Easy Tips for Optimizing AngularJS Performance
    AngularJS is an open-source JavaScript framework that developers use to build frontend applications. It comes with modular support, an extensive community, and all the tools that help develop and manage dynamic frontend web apps. - Source: dev.to / 4 months ago
  • Angular Tutorial: Host Element Binding
    Ok, what we'll use now is something that existed back in the day, after we switched from AngularJS to Angular 2 or modern Angular. We'll use the old/new host property on the component decorator. - Source: dev.to / 10 months ago
  • ⏰ It’s time to talk about Import Map, Micro Frontend, and Nx Monorepo
    Just to give you more context, I led the migration of several AngularJS applications to the newer Angular Framework. My client finally decided to make that move following the AngularJS deprecation announcement (stay up to date please 🙏)️. - Source: dev.to / about 1 year ago
  • JS Toolbox 2024: Essential Picks for Modern Developers Series Overview
    The next post in the series provides a thorough comparison of popular frameworks like React, Vue, Angular, and Svelte, focusing on their unique features and suitability for different project types. - Source: dev.to / about 1 year ago
View more

Opa mentions (3)

  • Imba – The friendly full-stack language
    I remember Opa http://opalang.org/ tried something similar at the time when MongoDB was new and modern. - Source: Hacker News / over 1 year ago
  • Ask HN: What web frameworks/technologies did not succeed as per your expectation
    We come across some web frameworks and technologies that we think will succeed, but they wither away as time passes by and don't succeed to the level we expected. Which web frameworks and or technologies did you come across that you thought would succeed but did not as per your expectations? For example, I thought that Opa Lang[0] and UrWeb[1] would succeed but did not, even though the ideas were sound. [0]... - Source: Hacker News / almost 2 years ago
  • Modern JavaScript:Everything you missed over the last 10 years(ECMAScript 2020)
    I think the Opa language was doing JSX-like code in the frontend before JSX http://opalang.org/ Both Opa and JSX were created in 2011. Opa had other innovations as well, such having the same code base run on both client and server (like Next.js). Unfortunately it didn't get traction and was abandoned by the creators. - Source: Hacker News / almost 4 years ago

What are some alternatives?

When comparing AngularJS and Opa, you can also consider the following products

Vue.js - Reactive Components for Modern Web Interfaces

Ruby on Rails - Ruby on Rails is an open source full-stack web application framework for the Ruby programming...

React - A JavaScript library for building user interfaces

ASP.NET - ASP.NET is a free web framework for building great Web sites and Web applications using HTML, CSS and JavaScript.

ember.js - A JavaScript framework for creating ambitious web apps

Backbone.js - Give your JS App some Backbone with Models, Views, Collections, and Events