Atheos IDE AlternativesIDEs & Code Editors like Atheos IDE

Atheos IDE is described as 'Atheos is a web-based IDE framework with a small footprint and minimal requirements, built on top of Codiad by FluidByte and the Codiad Team' and is a IDE in the development category. There are more than 25 alternatives to Atheos IDE for a variety of platforms, including Web-based, Self-Hosted, Mac, Windows and Linux apps. The best Atheos IDE alternative is Eclipse, which is both free and Open Source. Other great apps like Atheos IDE are CodePen, PhpStorm, JSPad and UltraEdit.

Atheos IDE iconAtheos IDE
  6
  • IDE
  • Free • Open Source
  • ...

Atheos is a web-based IDE framework with a small footprint and minimal requirements, built on top of Codiad by FluidByte...

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Atheos IDE alternatives page was last updated Apr 8, 2025
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  1. Eclipse icon

    Eclipse

     1143 likes
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    Eclipse is an extensible development platform with runtimes and application frameworks for building, deploying and managing software across the entire software lifecycle. Many people know Eclipse as a Java IDE, but it is much more than that- Eclipse actually consists of over 60...

    147 Eclipse alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    eclipse on windows 10

    Top Eclipse Features

    1.  Extensible by Plugins/Extensions
    2.  Java IDE
    3.  C++
    4.  Refactoring
    5.  Autocompletion
    6.  Syntax Highlighting
    7.  Portable
    8.  No registration required
    9.  Code Formatting
    10.  Batch Editing
    11.  Works Offline
    12.  Spell Checking

    Eclipse VS Atheos IDE

     

    • Eclipse is the most popular Windows, Mac & Linux alternative to Atheos IDE.

    • Eclipse is the most popular Open Source & free alternative to Atheos IDE.

    • Eclipse is Free and Open SourceAtheos IDE is also Free and Open Source
  2. CodePen icon

    CodePen

     117 likes
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    CodePen is a communal front-end development platform providing real-time HTML, CSS, and JavaScript previews. Users can build projects, test code, and enhance skills through challenges. Features include Presentation Mode for conferences and a vast active community for sharing and discovery.

    66 CodePen alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Online
    Auto Updating Previews: As you code, the preview updates automatically. Unless you don't want it to.

    Properties

    1.  Support for Themes

    Features

    1.  Live Preview
    2.  Running code
    3.  Sandbox
    4.  HTML/CSS/JS rendering
    5.  Code Formatting
    6.  Autocompletion
    7.  Syntax Highlighting
    8.  No registration required
    9.  Extensible by Plugins/Extensions
    10.  Support for MarkDown
    11.  Dark Mode
    12.  Real time collaboration

    CodePen VS Atheos IDE

     

    • CodePen is the most popular Web-based alternative to Atheos IDE.

    • CodePen is Freemium and ProprietaryAtheos IDE is Free and Open Source
  4. PhpStorm icon

    PhpStorm

     255 likes
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    Enjoy productive PHP and web development with PhpStorm. Take advantage of deep code understanding, top-notch coding assistance, and support for all major tools and frameworks.

    46 PhpStorm alternatives

    License model

    Application types

    Country of Origin

    • CZ flagCzechia
    • European Union flagEU

    Platforms

    • Mac
    • Windows
    • Linux
    PhpStorm screenshot 1

    Top PhpStorm Features

    1.  Syntax Highlighting
    2.  Autocompletion
    3.  Ad-free
    4.  Code Formatting
    5. Git icon  Git Support
    6.  Extensible by Plugins/Extensions
    7.  Portable
    8.  Works Offline
    9.  Spell Checking
    10.  Dark Mode
    11.  Real time collaboration
    12.  Support for MarkDown

    PhpStorm VS Atheos IDE

     

    • PhpStorm is the most popular commercial alternative to Atheos IDE.

    • PhpStorm is Paid and ProprietaryAtheos IDE is Free and Open Source
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    Screenshot
    CodeLobster IDE icon
    CodeLobster IDE

    Free cross-platform IDE for editing PHP, HTML, CSS, JavaScript with integrated debugger, intelligent code autocomplete, FTP/SFTP, project manager, and specialized support for frameworks like Laravel, WordPress, Drupal, Symfony, M...

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  6. JSPad icon

    JSPad

     8 likes
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    JSPad is a fast and lightweight online code editor for writing, testing, and previewing HTML, CSS, and JavaScript snippets instantly.

    52 JSPad alternatives

    License model

    • Free • Proprietary

    Application type

    Platforms

    • Online
    JSPad screenshot 1

    Properties

    1.  Distraction-free
    2.  Lightweight
    3.  Support for Themes

    Features

    1.  No Tracking
    2.  Live Preview
    3.  Ad-free
    4.  Syntax Highlighting
    5.  Dark Mode
    6.  No registration required
    7.  Code Formatting
    8.  Support for Bootstrap
    9. Git icon  Git Support
    10.  Web-Based
    11.  Sandbox
    12.  HTML/CSS/JS rendering

    JSPad VS Atheos IDE

     
  7. UltraEdit icon

    UltraEdit

     161 likes
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    UltraEdit is the ideal text, HTML and HEX editor, and an advanced PHP, Perl, Java and JavaScript editor for programmers. An industry-award winner, UltraEdit supports disk-based 64-bit file handling (standard) on 32-bit Windows platforms (Windows 2000 and later).

    205 UltraEdit alternatives

    License model

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    UltraEdit features an integrated FTP browser and supports syntax highlighting for hundreds of languages, with more always in the works. And with an integrated SSH/telnet client, scripting, custom tools, macros and Smart Templates, UltraEdit's ready for any coding session.

    UltraEdit Features

    1.  Column based text editing
    2.  Support for large files
    3.  Hex Editor

    UltraEdit VS Atheos IDE

     
  8. Phoenix Code icon

    Phoenix Code

     9 likes
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    Phoenix Code is a text editor designed to make coding as intuitive and fun as playing a video game - specially crafted for web developers, designers, and students.

    30 Phoenix Code alternatives

    License model

    • Free • Open Source

    Application types

    Platforms

    • Online
    • Self-Hosted
    • Windows
    • Mac
    • Linux
    Phoenix Code screenshot 1

    Properties

    1.  Lightweight
    2.  Privacy focused
    3.  Distraction-free
    4.  Support for Themes

    Features

    1.  Live Preview
    2.  Extensible by Plugins/Extensions
    3.  Works Offline
    4.  Syntax Highlighting
    5.  Support for MarkDown
    6.  Ad-free
    7.  No registration required
    8.  No Tracking
    9.  No Coding Required
    10.  Dark Mode

    Phoenix Code VS Atheos IDE

     

    • Phoenix Code is the most popular Self-Hosted alternative to Atheos IDE.

    • Phoenix Code is Free and Open SourceAtheos IDE is also Free and Open Source
    • Phoenix Code is Lightweight and Privacy focusedAtheos IDE is not according to our users
  10. AWS Cloud9 icon

    AWS Cloud9

     111 likes
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    A comprehensive browser-based IDE providing full development environment features with an integrated Linux terminal, powerful team collaboration tools, plugin flexibility, and easy project portability. Available for local or cloud use with an AWS account requirement.

    54 AWS Cloud9 alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Amazon Web Services
    • Software as a Service (SaaS)
    AWS Cloud9 screenshot 1
    Discontinued

    AWS Cloud9 is no longer available to new customers. Existing customers of AWS Cloud9 can continue to use the service as normal. AWS continues to invest in security, availability, and performance improvements for AWS Cloud9, but we do not plan to introduce new features. https://aws.amazon.com/blogs/devops/how-to-migrate-from-aws-cloud9-to-aws-ide-toolkits-or-aws-cloudshell/

    AWS Cloud9 Features

    1.  Extensible by Plugins/Extensions
    2.  Cloud IDE
    3.  Built-in terminal emulation
    4.  WebDAV Support
    5.  Browser-based

    AWS Cloud9 VS Atheos IDE

     

    • AWS Cloud9 is the most popular SaaS alternative to Atheos IDE.

    • AWS Cloud9 is Freemium and ProprietaryAtheos IDE is Free and Open Source
  11. Ideone icon

    Ideone

     58 likes
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    ideone.com is a... pastebin. But a pastebin like no other on the Internet. More accurate expression would be

    81 Ideone alternatives

    License model

    • Free • Proprietary

    Application types

    Country of Origin

    • PL flagPoland
    • European Union flagEU

    Platforms

    • Online
    Ideone screenshot 1

    Ideone Features

    1.  Syntax Highlighting
    2.  Multiple languages
    3.  Cloud IDE
    4.  Cloud coding

    Ideone VS Atheos IDE

     
  12. Eclipse Theia icon

    Eclipse Theia

     21 likes
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    With Theia you can develop one IDE and run it in browsers or native desktop application from a single source. Theia is designed in a modular way to allow extenders and adopters customizing and extending every aspect of it.

    16 Eclipse Theia alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    • Self-Hosted
    • Electron / Atom Shell
    Eclipse Theia screenshot 1

    Top Eclipse Theia Features

    1.  Ad-free
    2.  Web-Based
    3.  Autocompletion
    4.  Works Offline
    5. Git icon  Git Support
    6.  Syntax Highlighting
    7.  No Tracking
    8.  No registration required
    9.  Dark Mode
    10.  Extensible by Plugins/Extensions
    11.  AI-Powered
    12.  Agent chat

    Eclipse Theia VS Atheos IDE

     
  13. Icecoder icon

    Icecoder

     25 likes
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    A lightweight yet powerful IDE/code editor that comes in both Web and desktop editions, the latter written with PHP and including choices for several platforms (Windows, Linux, Mac).

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • GB flagUnited Kingdom

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Self-Hosted
    Icecoder screenshot 1
    Discontinued

    Seems the software is for sale. "This repository has been archived by the owner on Dec 14, 2023. It is now read-only."

    Icecoder Features

    1.  Dark Mode
    2.  Syntax Highlighting
    3.  Extensible by Plugins/Extensions
    4.  No Tracking
    5.  No registration required
    6.  Ad-free
    7.  Online
    8.  Self-hosted

    Icecoder VS Atheos IDE

     
  14. PythonAnywhere icon

    PythonAnywhere

     41 likes
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    PythonAnywhere is a Python development and hosting environment that displays in your web browser and runs on cloud servers. The servers are already set up with everything you need: hundreds of useful Python packages and web frameworks are supported out of the box.

    53 PythonAnywhere alternatives

    License model

    • Freemium • Proprietary

    Application type

    Country of Origin

    • GB flagUnited Kingdom

    Platforms

    • Online
    • Software as a Service (SaaS)
    Front page

    PythonAnywhere Features

    1.  Real time collaboration
    2.  Coding
    3.  Command line/bash

    PythonAnywhere VS Atheos IDE

     
  15. Nova icon

    Nova

     7 likes
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    The beautiful, fast, flexible, native Mac code editor from Panic.

    License model

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    Nova screenshot 1

    Properties

    1.  Lightweight
    2.  Support for Themes

    Features

    1.  Syntax Highlighting
    2.  Extensible by Plugins/Extensions
    3.  Autocompletion
    4.  Live Preview
    5.  Works Offline
    6.  Dark Mode
    7.  Support for FTP

    Nova VS Atheos IDE

     
12 of 39 Atheos IDE alternatives