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intellij-plugins
Open-source plugins included in the distribution of IntelliJ IDEA Ultimate and other IDEs based on the IntelliJ Platform
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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
If you're not comfortable using Android Studio, you can use pretty much any IDE. JetBrains has some pretty good ones, and I'm fairly certain Android Studio is based on IntelliJ IDEA. Other open source IDEs I can recommend are VSCodium (open source VS Code) and Atom. Also, Android Studio is open source. You will miss out on features like Android device emulation, however.
If you're not comfortable using Android Studio, you can use pretty much any IDE. JetBrains has some pretty good ones, and I'm fairly certain Android Studio is based on IntelliJ IDEA. Other open source IDEs I can recommend are VSCodium (open source VS Code) and Atom. Also, Android Studio is open source. You will miss out on features like Android device emulation, however.
If you're not comfortable using Android Studio, you can use pretty much any IDE. JetBrains has some pretty good ones, and I'm fairly certain Android Studio is based on IntelliJ IDEA. Other open source IDEs I can recommend are VSCodium (open source VS Code) and Atom. Also, Android Studio is open source. You will miss out on features like Android device emulation, however.