Showing 250 open source projects for "app development"

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  • 1
    Android Interview Questions

    Android Interview Questions

    Your Cheat Sheet For Android Interview

    This repository is a comprehensive study guide for Android interviews, organized to cover the platform from fundamentals to advanced topics. It includes explanations and Q&A on the Android app lifecycle, activities and fragments, services, broadcast receivers, content providers, and the build system. Modern practices are addressed as well—Kotlin language features, coroutines, Jetpack components, MVVM/MVI architecture, dependency injection, and testing strategies. Performance and reliability...
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  • 2
    Backbone

    Backbone

    Give your JS app some Backbone with models, views, and collections

    Backbone is a lightweight JavaScript library (sometimes described as a micro-framework) created by Jeremy Ashkenas that adds structure to JavaScript-heavy applications by providing models, views, collections, events and routing tied to RESTful JSON services. Its main philosophy is to provide the minimal set of primitives to organise your client-side code — models for data, collections for groups of models, views for UI interactions, and routers for state/URL management — without prescribing...
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  • 3
    RealWorld

    RealWorld

    Exemplary fullstack Medium.com clone powered by React, Angular, Node

    RealWorld is the “mother of all demo apps”—a full spec and starter backend/frontend that implements a Medium-like blogging platform to showcase best practices across many frameworks. Instead of trivial todo lists, it provides a realistic feature set: authentication, CRUD operations, pagination, comments, profiles, tagging, and favoriting. The same spec is realized dozens of times (React, Vue, Svelte, Angular, Solid, Next, Remix, and many more), alongside multiple server implementations, so...
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  • 4
    Pundit

    Pundit

    Minimal authorization through OO design and pure Ruby classes

    Pundit (varvet/pundit) is a Ruby gem that provides a simple and effective framework for adding authorization logic to Rails (or other Ruby) applications. It centers around policy classes—one policy per model or resource—that define what actions a given user is permitted to perform (e.g., show?, update?, destroy?). Each policy method returns a boolean, and can be structured using combinators or shared logic to keep things DRY. In controllers and views, Pundit provides helpers like authorize,...
    Downloads: 0 This Week
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  • 5
    Pedestal

    Pedestal

    The Pedestal Server-side Libraries

    Pedestal is a set of libraries that we use to build services and applications. It runs in the back end and can serve up whole HTML pages or handle API requests. There are a lot of tools in that space, so why did we build Pedestal? We had two main reasons. Pedestal is designed for APIs first. Most web app frameworks still focus on the "page model" and server-side rendering. Pedestal lets you start simple and add that if you need it. Pedestal makes it easy to create "live" applications....
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  • 6
    Starter Applets

    Starter Applets

    Google AI Studio Starter Apps

    starter-applets is a collection of minimal, sandboxed example “applets” that demonstrate how to compose Gemini-powered microapps (chat widgets, image generation, workflows) that can be embedded in other applications or used standalone. The applets are structured with a focus on simplicity: each presents a prompt input, minimal UI logic, and inline display of the resulting output or widget (e.g. generated text, images). They are built to illustrate best practices (e.g. safety guards, prompt...
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  • 7
    Resque

    Resque

    Ruby library for creating background jobs and processing them

    Resque is a Redis-backed Ruby library for creating background jobs, placing them on multiple queues, and processing them later. Resque (pronounced like "rescue") is a Redis-backed library for creating background jobs, placing those jobs on multiple queues, and processing them later. Background jobs can be any Ruby class or module that responds to perform. Your existing classes can easily be converted to background jobs or you can create new classes specifically to do work. Or, you can do...
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  • 8
    aws-devops-zero-to-hero

    aws-devops-zero-to-hero

    AWS zero to hero repo for devops engineers to learn AWS in 30 Days

    aws-devops-zero-to-hero is a 30-day AWS learning roadmap aimed squarely at DevOps engineers who want both conceptual understanding and hands-on projects. The README is structured as a day-by-day syllabus, starting with “Day 1: Introduction to AWS” and moving through IAM, EC2, VPC networking, security, DNS (Route 53), storage (S3), and many other core services. Each day mixes explanation with at least one concrete project or lab, such as deploying applications on EC2, designing secure VPCs,...
    Downloads: 0 This Week
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  • 9
    libsu

    libsu

    A complete solution for apps using root permissions

    libsu is a modern Android library that provides a safe, convenient API for executing commands with root privileges and interacting with the Android shell. Instead of ad-hoc Runtime.exec calls, it offers structured sessions, proper I/O streams, and lifecycle handling that works reliably across devices. The library focuses on developer ergonomics: thread-safe helpers, Kotlin-friendly APIs, and utilities for file operations, process management, and parcelable data transfer. It’s designed to...
    Downloads: 5 This Week
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  • 10
    Poxa

    Poxa

    Pusher server implementation compatible with Pusher client libraries

    Pusher server implementation is compatible with Pusher client libraries. Open Pusher implementation compatible with Pusher libraries. It's designed to be used as a single registered app with id, secret, and key defined on start. Poxa is a standalone elixir server implementation of the Pusher protocol. Docker images are automatically built by Docker Hub. They are available at Docker Hub. One can generate it using: docker build -t local/poxa. Poxa uses gproc extensively to register websocket...
    Downloads: 0 This Week
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  • 11
    will_paginate

    will_paginate

    Pagination library for Rails, Sinatra, Merb, DataMapper, and more

    will_paginate is a pagination library that integrates with Ruby on Rails, Sinatra, Hanami::View, Merb, DataMapper and Sequel. See installation instructions on the wiki for more info. A Sinatra app needs a couple of extra requires. For Padrino apps you need to manually register the Sinatra extension. Alternatively, you can avoid manual will_paginate install by using Padrino recipes. will_paginate 3.0+ will not work on Rails 2. In an older version of Rails, you'll have to use will_paginate...
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  • 12
    AAA

    AAA

    Curated list of the best FOSS Android apps to maximize your freedom

    This is a list of the best FOSS apps according to us. You can prove us wrong on the contributing page.
    Downloads: 5 This Week
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  • 13
    Emoji Mart

    Emoji Mart

    One component to pick them all

    Data required for the picker to work has been completely decoupled from the library. That gives developers the flexibility to better control their app bundle size and let them choose how and when this data is loaded. Callback when the Add custom emoji button is clicked. The button will only be displayed if this callback is provided. It is displayed when search returns no results. You can use custom emojis by providing an array of categories and their emojis. Emojis also support multiple skin...
    Downloads: 3 This Week
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  • 14
    A small, easy to learn framework. For rapid application development. No XML, no action, no EJB. Use the power of Java AND the power of your database. Extracted from (comercial) app working in prod for 7 years now (www.clinsis.com). Designed in Spanis
    Downloads: 0 This Week
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  • 15
    ClashN

    ClashN

    A clash client for Windows, support Mihomo

    clashN is a Windows desktop client for the Clash networking engine, providing a graphical interface to manage proxies, rules, and profiles. It wraps the Clash core in a familiar, configurable UI so users can import subscriptions, switch nodes, and observe connections without editing YAML by hand. The app emphasizes rule-based routing, letting you combine rule providers and policy groups to steer traffic by domain, process, or destination category. System-wide proxy control, including PAC and...
    Downloads: 5 This Week
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  • 16
    gnoga

    gnoga

    gnoga - The GNU Omnificent GUI for Ada

    Gnoga uses modern web technologies to allow simple creation of cross platform GUIs for Ada with native or custom look and feels that perform on par to native toolsets locally and can be easily and securely remoted as web apps over the internet as well.
    Downloads: 0 This Week
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  • 17
    TRURL

    TRURL

    A suite of RPN calculators and a class library for Object Pascal

    TRURL is a suite of desktop calculators with reverse Polish notation (RPN) written in Object Pascal. Additionally, it comes with a free reusable class library (RPN Engine) as a toolbox for creating your own calculator. TRURL is an acronym for "TRURL is a Reusable Universal RPN Library". Class Libraries: • RPN Engine: Full-featured calculation engine for Pascal-based RPN calculators • Segmitator: Library for virtual seven-segment displays Applications: • TRURL A: Simple demo app...
    Downloads: 3 This Week
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  • 18
    AlertKit

    AlertKit

    Native alert from Apple Music & Feedback

    AlertKit is an open source Swift library designed to replicate the native alert and feedback popups seen in Apple Music and the App Store, giving iOS developers a simple way to integrate polished, system-like notifications into their applications. It focuses on delivering visually consistent and animated alert components that closely match Apple’s design language, including styles inspired by iOS 16 and iOS 17 system interfaces. The library supports both UIKit and SwiftUI, making it flexible...
    Downloads: 0 This Week
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  • 19
    ajax-datatables-rails

    ajax-datatables-rails

    A wrapper around DataTable's ajax methods that allow synchronization

    DataTables is a nifty jQuery plugin that adds the ability to paginate, sort, and search your HTML tables. When dealing with large tables (more than a couple of hundred rows) however, we run into performance issues. These can be fixed by using server-side pagination, but this breaks some DataTables functionality. ajax-data tables-rails is a wrapper around DataTables ajax methods that allow synchronization with server-side pagination in a Rails app. It was inspired by this Railscast. I needed...
    Downloads: 0 This Week
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  • 20
    Hyperion Android

    Hyperion Android

    App Debugging & Inspection Tool for Android

    Hyperion is a hidden plugin drawer that can easily be integrated into any app. The drawer sits discreetly under the app so that it is there when you need it and out of the way when you don't. Hyperion plugins are designed to make inspection of your app quick and simple. Be one of the first to create a third-party plugin. The plugin creation guide is a work in progress, but if you are feeling ambitious you can reference the plugins we have already created. To create your own plugin, implement...
    Downloads: 3 This Week
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  • 21
    Starscream

    Starscream

    Websockets in swift for iOS and OSX

    Starscream is a conforming WebSocket (RFC 6455) library in Swift. Once imported, you can open a connection to your WebSocket server. Note that socket is probably best as a property, so it doesn't get deallocated right after being setup. After you are connected, there is either a delegate or closure you can use for process WebSocket events. The writeData method gives you a simple way to send Data (binary) data to the server. The writeString method is the same as writeData, but sends...
    Downloads: 0 This Week
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  • 22
    MATLAB and Simulink for Students

    MATLAB and Simulink for Students

    An awesome list of helpful resources for students learning MATLAB

    Are you a new MATLAB user seeking helpful tips and tricks? Are you a member of a student society in search of engaging workshops? Or perhaps you're looking for opportunities to test your MATLAB skills through student competitions or challenges? Look no further! Our awesome list repository below is a resource that caters to all these needs. Whether you're starting from scratch or aiming to enhance your existing knowledge, you'll find a wealth of information to help you learn MATLAB and make...
    Downloads: 103 This Week
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  • 23
    BlockHook

    BlockHook

    Hook Objective-C blocks. A powerful AOP tool

    BlockHook is an Objective-C library that enables hooking into the execution of blocks (closures). It allows developers to intercept, modify, and monitor block invocations for debugging, analytics, or altering app behavior.
    Downloads: 1 This Week
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  • 24
    Redux

    Redux

    A Predictable State Container for JavaScript apps

    Redux is a small, unopinionated predictable state container for JavaScript apps. It basically lets you write applications that behave in a consistent manner, can run in various environments (native, client and server) and are easy to test. Redux centralizes your app’s state and logic, thereby enabling some powerful capabilities. With Redux it’s possible to implement logging, hot reloading, universal apps, time travel and more with no buy-in from the developer. Unlike Flux (from which...
    Downloads: 2 This Week
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  • 25
    React Demos

    React Demos

    A collection of simple demos of React.js

    This repository is a curated collection of small, focused React examples intended to illustrate core concepts through runnable code. Each demo isolates a single idea—such as component composition, state and props, lifecycle hooks, or event handling—so learners can see cause and effect without framework noise. The code favors clarity over abstraction, making it easy to copy, tweak, and compare different approaches to the same problem. Many examples are deliberately minimal, showing just...
    Downloads: 2 This Week
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