Software Alternatives, Accelerators & Startups

Active Admin VS Fly.io

Compare Active Admin VS Fly.io and see what are their differences

Active Admin logo Active Admin

The administration framework for business critical Ruby on Rails applications.

Fly.io logo Fly.io

Edge computing is the new frontier.
  • Active Admin Landing page
    Landing page //
    2023-07-30
  • Fly.io Landing page
    Landing page //
    2023-11-16

Active Admin features and specs

  • Rapid Development
    Active Admin allows for rapid development of back-end administration dashboards without having to code everything from scratch. It provides a default set of controllers, routes, and views that can be easily customized.
  • Rails Integration
    Built specifically for Ruby on Rails applications, Active Admin leverages Rails conventions and integrates seamlessly with its ecosystem, enabling a familiar and efficient development experience for Rails developers.
  • Rich Features
    Active Admin comes with a wide range of features like authentication, authorization, filtering, searching, and custom actions which can be customized to fit business requirements.
  • Community and Documentation
    Active Admin has a strong community and well-maintained documentation which provides support and resources for developers. The community contributes by sharing plugins and solutions to common problems.

Possible disadvantages of Active Admin

  • Customization Complexity
    Once you move beyond basic customizations, making extensive changes to the default behavior or appearance can be complex and require a deeper understanding of both Active Admin and Rails.
  • Performance
    Due to the abstraction and additional layers provided by Active Admin, it might not be the best choice for high-performance applications, especially when dealing with large datasets.
  • Dependency on Rails
    Active Admin is tightly coupled with Rails, which means it cannot be used for non-Rails applications, limiting its use for projects not based on this framework.
  • Version Compatibility
    As both Rails and Active Admin evolve, there might be compatibility issues between different versions, which could require upgrades or modifications in your existing codebase.

Fly.io features and specs

  • Global Deployment
    Fly.io enables developers to deploy applications geographically close to users, reducing latency and improving performance.
  • CLI and Git-based Deployment
    Fly.io offers a command-line interface and Git integration for quick and efficient application deployment.
  • Automatic SSL
    Fly.io provides automatic SSL/TLS certificates, simplifying secure traffic management.
  • Scalability
    Applications deployed on Fly.io can scale both vertically and horizontally to handle varying loads.
  • Built-in Storage
    Fly.io offers persistent storage solutions such as Fly Volumes, which seamlessly integrate with applications.
  • Integrated Monitoring
    Fly.io provides built-in monitoring tools to track application performance and health.

Possible disadvantages of Fly.io

  • Learning Curve
    New users may find the platform's concepts and deployment methods unfamiliar, requiring time to learn.
  • Documentation
    Users have reported that the documentation can sometimes be lacking in detail or difficult to navigate.
  • Cost
    While Fly.io offers a free tier, the cost can become significant as you scale your applications.
  • Limited Language Support
    Fly.io supports fewer runtime environments and languages compared to more established platforms like AWS or Azure.
  • Platform Maturity
    As a relatively new platform, Fly.io may lack some advanced features and ecosystem integrations offered by more mature competitors.
  • Debugging
    The debugging tools and processes can be less comprehensive compared to traditional cloud providers.

Analysis of Fly.io

Overall verdict

  • Fly.io is a strong choice for developers looking to enhance application performance through global deployment without the complexities often associated with managing multiple infrastructure locations. Its ease of use and robust features make it a competitive option in the edge computing space.

Why this product is good

  • Fly.io is known for its edge computing solutions that allow developers to deploy applications closer to users, resulting in reduced latency and improved performance. It supports a wide range of programming languages and frameworks, and offers a straightforward platform for deploying full-stack applications globally. Fly.io's pay-as-you-go pricing model can also be cost-effective for projects of various sizes.

Recommended for

  • Developers looking to deploy applications globally with minimal latency.
  • Teams needing a scalable and flexible infrastructure that can grow with their needs.
  • Projects that benefit from a serverless approach without sacrificing control over the code and environment.
  • Applications that require rapid deployment and ease of management.

Active Admin videos

Harry Potter and the Active Admin

Fly.io videos

We FLY a SPACESHIP! Video Game FLY.io Computer App with HobbyKidsTV

Category Popularity

0-100% (relative to Active Admin and Fly.io)
Developer Tools
4 4%
96% 96
Cloud Computing
0 0%
100% 100
Data Dashboard
100 100%
0% 0
No Code
100 100%
0% 0

User comments

Share your experience with using Active Admin and Fly.io. For example, how are they different and which one is better?
Log in or Post with

Reviews

These are some of the external sources and on-site user reviews we've used to compare Active Admin and Fly.io

Active Admin Reviews

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

Fly.io Reviews

Heroku Free Tier Gone โ€” 10 Alternatives Still Free in April 2026
Yes! Several platforms offer real free tiers in 2026. SnapDeploy gives you free containers (no time limits) with no credit card required โ€” and your hours only count when your app is running. Render offers free web services with 512 MB RAM (but they spin down after inactivity). Railway gives new users a $5 one-time trial credit. Fly.io offers trial credits for new users,...
Source: snapdeploy.dev
5 Free Heroku Alternatives with Free Plan for Developers
Fly.io is one the best free alternatives to Heroku that you can use. Itโ€™s designed for developers and students to run small applications for free and scale costs affordably as you grow. Just like Heroku it comes with CLI applications and there are other tools in it that you can use to easily deploy your apps. For advanced users, it has premium plans but for now, due to its...

Social recommendations and mentions

Based on our record, Fly.io seems to be a lot more popular than Active Admin. While we know about 482 links to Fly.io, we've tracked only 12 mentions of Active Admin. 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.

Active Admin mentions (12)

  • Goravel: A Go framework inspired by Laravel
    Same reason IDEs โ€” when you really know them โ€” allow for quicker development compared to using primitive text editors with a bunch of third-party plugins duck-taped together. When you understand the framework, everything is written to the same standard, behaves in similar ways, and is where you expect it to be. Adding things like background job processing requires changing one line of config. Also, one... - Source: Hacker News / over 1 year ago
  • Use Rails
    Rails is absolutely fantastic for projects below 10,000 lines with 1 or 2 contributors, especially if you want a classic forms-based UI. And you can get a huge amount done under those constraints in Rails. But as of couple of years ago, Rails came with a number of drawbacks: 1. There was no really viable system of static typing that a significant number of people were enthusiastic about. See... - Source: Hacker News / over 2 years ago
  • Ask HN: Why aren't Django Admin style dashboards popular in other frameworks?
    Can you clarify what's the "tremendous value" you're getting out of the Django admin? At Heii On-Call https://heiioncall.com/ we are using Active Admin https://activeadmin.info/ for Ruby on Rails, which seems quite similar to the Django admin. In my experience, it's mostly useful as a fairly basic read-only view of what's in the database. In Rails, it's so easy to whip together a custom view that we tend to do... - Source: Hacker News / almost 3 years ago
  • View code coverage (active_admin and orther .arb file)
    For those who know [https://activeadmin.info/](https://activeadmin.info/) it uses a file format [https://github.com/activeadmin/arbre](https://github.com/activeadmin/arbre). Source: almost 4 years ago
  • Show HN: Build Ruby on Rails apps 10x faster โ€“ Avo
    Very neat! My first thought was that this was a competitor to https://bullettrain.co/. Looking into it a bit more, it seems more aimed at building admin panels than whole apps. I guess it competes against tools like https://activeadmin.info/? - Source: Hacker News / about 4 years ago
View more

Fly.io mentions (482)

  • Best alternatives to Heroku in 2026
    Fly.io opens up two things Heroku keeps at arm's length: real multi-region deployment and full control over the runtime. Heroku's Common Runtime offers two regions (US and EU), and Private Spaces gets you one region at a time from a wider list. Fly runs Firecracker microVMs across eighteen regions on six continents, and replicas can be pinned to specific cities. If your Heroku app has global users and you've been... - Source: dev.to / 29 days ago
  • Building an autonomous Slack agent with OpenCode
    The gateway is the web service that receives requests. I host it on Fly. It accepts Slack events, automation API calls, trigger requests, Composio webhooks, Inngest calls, and runtime calls. - Source: dev.to / about 2 months ago
  • It Worked on My Machine (Literally)
    The tunnel was never meant to be permanent (it runs off my laptop, and the URL changes every time it restarts), so the next step was deploying somewhere real. I built the Docker image for Fly.io, set my username, and shipped it. - Source: dev.to / 2 months ago
  • I Built a Zero-Knowledge Encrypted Habit Tracker with Elixir & Phoenix LiveView
    Three independent encryption layers at rest: client-side E2E, Cloak AES-256-GCM in Postgres, and LUKS disk encryption on Fly.io. - Source: dev.to / 4 months ago
  • One honojs file for entire web scraping API
    I'll also provide github repository in the end, which you can use easily to launch your own scraping APIs on vercel, Cloudflare, netlify or, fly.io or even on a Docker container. - Source: dev.to / 4 months ago
View more

What are some alternatives?

When comparing Active Admin and Fly.io, you can also consider the following products

RailsAdmin - A Rails engine that provides an easy-to-use interface for managing your data

Render - Render is a unified platform to build and run all your apps and websites with free SSL, a global CDN, private networks and auto deploys from Git.

Slick - A jquery plugin for creating slideshows and carousels into your webpage.

Railway - Made for any language, for projects big and small.

Sequel Pro - MySQL database management for Mac OS X

Vercel - Vercel is the platform for frontend developers, providing the speed and reliability innovators need to create at the moment of inspiration.