Showing 332 open source projects for "backend"

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  • 1
    Earth Engine API

    Earth Engine API

    Python and JavaScript bindings for calling the Earth Engine API

    ...With it, users compose lazy, server-side computations over massive catalogs of satellite imagery and vector datasets without handling raw files locally. The API exposes functional operators for map algebra, reducers, joins, and machine learning that scale transparently on Earth Engine’s backend. Developers authenticate once, work interactively in notebooks or the Code Editor, and export results to Cloud Storage, Drive, or asset collections. Visualization helpers render tiled layers and charts so analysts can iterate quickly on workflows like land-cover mapping, change detection, or time-series analysis. By combining petabyte-scale data with concise functional transforms, the API turns complex remote-sensing pipelines into reproducible scripts that are easy to share.
    Downloads: 4 This Week
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  • 2
    Search with Lepton

    Search with Lepton

    Lightweight demo to build a conversational AI search engine quickly

    ...The implementation is intentionally minimal, containing fewer than 500 lines of code while still providing a complete working example of an AI-powered search system. It includes both a backend service written in Python and a web interface that allows users to interact with the search engine in a conversational format. Developers can configure different search providers and language models through environment variables, making it flexible for experimentation and prototyping.
    Downloads: 2 This Week
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  • 3
    Open Source Text to CAD Harness

    Open Source Text to CAD Harness

    An open source harness for generating CAD models

    ...The project also integrates modular “skills” for robotics, motion planning, and manufacturing validation, making it highly extensible. Designed to run locally without backend dependencies, it provides a flexible environment for experimentation and production workflows.
    Downloads: 3 This Week
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  • 4
    Project Hestia

    Project Hestia

    A grid-based, modular dashboard built entirely from HTML, CSS, and JS

    Project Hestia is a powerful open-source backend framework and runtime that aims to simplify the development of scalable, distributed applications by providing a modular set of core services such as user authentication, permission enforcement, event streaming, and service orchestration. Built with modern application needs in mind, Hestia-Core abstracts common infrastructure concerns so developers can focus on business logic rather than boilerplate integration of third-party services. ...
    Downloads: 1 This Week
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  • 5
    FastRTC

    FastRTC

    The python library for real-time communication

    ...It abstracts away much of the complexity that typically comes with implementing WebRTC by providing a simple interface — e.g. a Stream class — that can be mounted within a web backend (for example a FastAPI application). This makes it particularly well suited for building real-time voice (or video) interfaces for applications such as AI assistants, live chat, or collaborative audio/video tools. FastRTC also integrates nicely with UI frameworks (e.g. via a web demo using Gradio), so developers can rapidly prototype and deploy real-time streaming applications without deep knowledge of low-level WebRTC internals. ...
    Downloads: 3 This Week
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  • 6
    GitDiagram

    GitDiagram

    AI tool that converts GitHub repositories into interactive diagrams

    ...Users can interact with the generated diagrams by clicking components to navigate directly to related files or directories within the repository. GitDiagram combines a modern web frontend with a backend service that processes repository data and generates diagrams dynamically.
    Downloads: 2 This Week
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  • 7
    pdfmake

    pdfmake

    Client/server side PDF printing in pure JavaScript

    Print PDFs directly in the browser or delegate it to your NodeJS backend. Use the same document definition in both cases. Forget about manual x, y calculations. Declare document structure and let pdfmake do the rest. Use paragraphs, columns, lists, tables, canvas, etc. Declare your own styles, use custom fonts, build a DSL and extend the framework. Provides a set of options to disable font layout cache and to control when pages are flushed to the output file.
    Downloads: 2 This Week
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  • 8
    JavaGuide

    JavaGuide

    "Java Learning + Interview Guide" covers the core Java knowledge

    ...Beyond core Java, JavaGuide covers tools like Maven, Docker, Git, and frameworks like Spring, Spring Boot, and MyBatis. Its structured approach makes it a comprehensive handbook for both beginners and experienced backend engineers.
    Downloads: 1 This Week
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  • 9
    EpicReact.Dev

    EpicReact.Dev

    Build a ReactJS App workshop

    EpicReact.Dev is the codebase used in the “Build an Epic React App” workshop, where participants build a complete React application from scratch. The project demonstrates how to structure a modern React app, including data modeling, authentication, routing, testing, and interaction with a backend. It uses a realistic “bookshelf” domain where users can manage lists of books, track reading status, and record notes, which provides a concrete context for learning. The repository includes setup scripts and system requirements checks for Git, Node, and npm, plus Docker and Codespaces options for people who struggle with local environments. ...
    Downloads: 3 This Week
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  • 10
    Gemma Translator

    Gemma Translator

    Code to run an on-device, fully offline voice translator

    ...The entire inference workflow can operate offline after the required models are installed. Its React interface is optimized for compact handheld and Raspberry Pi displays, including two-person conversational layouts. A Python backend coordinates speech recognition, text-to-speech, and communication with the local language model. Scripts automate setup, model downloading, development startup, and production deployment as a Raspberry Pi kiosk. The repository also includes systemd configuration and printable enclosure files for building a dedicated translation appliance.
    Downloads: 0 This Week
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  • 11
    zhuzhiliao

    zhuzhiliao

    Traditional toy that makes a wah-wah sound when it spins

    Zhuzhiliao is a browser simulation of the traditional Chinese bamboo cicada toy that makes a distinctive sound when swung in circles. The experience runs from a single dependency-free HTML file and can work offline without a build step or backend. Touch gestures, automatic swinging, and mobile motion sensors can drive the virtual toy. A fixed-step physics model simulates gravity, an elastic string, drag, tension, and rotational speed. Audio uses a real toy recording whose playback changes with motion, with a synthesized Web Audio fallback when the sample cannot be decoded. ...
    Downloads: 0 This Week
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  • 12
    Cognita

    Cognita

    Open source RAG framework for building scalable modular AI apps

    ...Cognita provides reusable components such as parsers, data loaders, embedders, retrievers, and query controllers, allowing teams to customize each stage of the RAG pipeline independently. It includes both a backend service and a frontend interface, enabling users to upload documents, experiment with configurations, and perform question-answering tasks interactively. Cognita supports incremental indexing, meaning it processes only new or updated data to reduce computational overhead and improve efficiency.
    Downloads: 0 This Week
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  • 13
    KeepChatGPT

    KeepChatGPT

    Browser userscript that enhances ChatGPT reliability and usability

    KeepChatGPT is an open source browser userscript designed to enhance the reliability, usability, and efficiency of the ChatGPT web interface. It runs through userscript managers and injects additional functionality directly into the page, allowing users to improve their workflow without requiring a backend service or separate application. It focuses on solving common problems experienced during AI conversations, such as session timeouts, network errors, message failures, and interruptions during long chats. By automating session refresh and maintaining active connections, KeepChatGPT reduces the need for repeated manual steps when recovering from errors or expired sessions. ...
    Downloads: 0 This Week
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  • 14
    Counter

    Counter

    Web Analytics made simple

    counter.dev is a minimal web analytics server that prioritizes simplicity, speed, and privacy. The backend is designed to be resource-light while still providing the essential metrics teams care about, such as page views, referrers, and basic geography. Rather than storing everything in a monolithic database, it combines a fast in-memory store for hot data with archival to a traditional SQL store for long-term retention. The client snippet is tiny and cookieless, which helps reduce layout shift and keeps page performance high. ...
    Downloads: 0 This Week
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  • 15
    Deep Research

    Deep Research

    Use any LLMs (Large Language Models) for Deep Research

    ...The project emphasizes privacy: processing and storage happen locally, avoiding server-side retention of your queries and notes. A simple web UI lets you enter topics and configure models, while the backend streams progress as sources are fetched and arguments are weighed. It offers MCP server support and SSE APIs, so IDEs and agent clients can drive the same workflow programmatically. The result is a repeatable process for scoping questions, collecting evidence, and producing a concise report with citations and reasoning steps.
    Downloads: 0 This Week
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  • 16
    Meteor

    Meteor

    Meteor, the JavaScript App Platform

    Meteor is a full-stack JavaScript framework that streamlines building real-time web and mobile applications from a single codebase. It couples a Node.js backend with a reactive data system so UI updates propagate automatically when data changes. The framework popularized DDP (a lightweight pub/sub protocol) and a client cache (Minimongo) to mirror server collections on the client for latency-compensated interactions. A batteries-included build system, package ecosystem, and opinionated project structure reduce setup time for accounts, methods, publications, and UI integration. ...
    Downloads: 0 This Week
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  • 17
    CrossUI

    CrossUI

    CrossUI is a free Cross-Browser Javascript framework

    ...Prototype, develop and package the exactly same code into Web Apps, Native Desktop (Windows, Linux and Mac) Apps, as well as Mobile Apps. Rich client-side API, works with any backend or static HTML pages. Web services (JSON/XML/SOAP) can be directly bound. More than 100 components, including Tabs, Dialog, TreeGrid, SVG Shapes, Chart and many other web GUI components. Support reusable modules. Wide cross-browser compatibility, IE6+, firefox3+, opera9+, safari3+ and Google Chrome. Full API Documentation with tons of samples. ...
    Downloads: 0 This Week
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  • 18
    AIClient-2-API

    AIClient-2-API

    Simulates Gemini CLI, Antigravity, Qwen Code, and Kiro client

    AIClient-2-API is a developer-focused tool that acts as a compatibility layer, simulating multiple AI client interfaces and translating them into standardized API requests compatible with OpenAI-style endpoints. It enables developers to connect various AI tools and clients, such as Gemini CLI, Qwen Code, or other proprietary interfaces, into a unified backend without needing to rewrite integrations. The system is designed to support high-throughput usage, handling large volumes of requests while maintaining compatibility across different AI ecosystems. It also provides access to alternative models, including built-in support for certain Claude-based functionalities, expanding flexibility for developers working with multiple providers. ...
    Downloads: 0 This Week
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  • 19
    Deep Chat

    Deep Chat

    Customizable AI chat component for websites with API support

    Deep Chat is a highly customizable web component designed to simplify the integration of AI-powered chat interfaces into websites. It allows developers to embed a fully functional chatbot using minimal setup, while still offering extensive control over behavior, appearance, and integrations. Deep Chat supports connections to a wide range of AI services as well as custom backends, enabling flexible deployment for different use cases. It is built as a framework-agnostic solution, meaning it...
    Downloads: 0 This Week
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  • 20
    JSCamp InfoJobs

    JSCamp InfoJobs

    Content and exercises fromJSCamp InfoJobs

    JSCamp InfoJobs is the companion repository for JSCamp InfoJobs, an intensive full-stack JavaScript bootcamp in Spanish designed to take students from fundamentals to advanced topics. It is organized into numbered modules like 00-html-css, 01-javascript, 02-react, 03-router-and-zustand, 04-node, 05-typescript, 06-inteligencia-artificial, 07-sql, 08-ci-cd, and 09-docker, mirroring the curriculum of the bootcamp.The README explains that students will build a complete project step by step...
    Downloads: 0 This Week
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  • 21
    Node.js Testing Best Practices

    Node.js Testing Best Practices

    Beyond the basics of Node.js testing

    This repository narrows the testing lens to Node.js backends, focusing on the challenges of servers, microservices, and cloud-native deployments. It covers API testing, contract testing, and persistence-layer strategies that avoid coupling tests to fragile implementation details. The material explains how to structure tests around process boundaries—HTTP, queues, cron jobs—while keeping fast feedback cycles through selective integration tests and reliable test doubles. It dives into topics...
    Downloads: 0 This Week
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  • 22
    MCP UI

    MCP UI

    SDK for building interactive UI components over MCP for AI tools

    ...Instead of returning only text responses, tools can provide structured UI resources such as HTML or remote-rendered components, allowing more engaging and functional interactions. mcp-ui introduces a standardized approach where tools and their associated interfaces are linked through metadata, enabling clients to automatically discover and display the correct UI. It includes both client-side and server-side SDKs, making it possible to define UI elements on the backend and handle user interactions on the frontend. It supports multiple programming environments, including TypeScript, Python, and Ruby, broadening its accessibility for developers.
    Downloads: 0 This Week
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  • 23
    Devon

    Devon

    Open source AI pair programmer for coding, debugging, automation

    ...It operates as an agent-based system that can explore codebases, edit files, and execute development workflows with minimal manual intervention. Devon uses a client-server architecture with a Python backend and multiple user interfaces, including a terminal interface and an Electron-based desktop application. Devon integrates with multiple large language models, allowing users to choose between different providers for performance, cost, and latency considerations. It is capable of performing tasks such as debugging, writing tests, analyzing code structure, and navigating complex repositories. ...
    Downloads: 0 This Week
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  • 24
    Crossnote App

    Crossnote App

    An interesting markdown note taking application

    ...Users can add, edit, and manage markdown documents in the browser, and because it uses modern web technologies, the app caches itself and local data to work seamlessly when a network connection is unavailable. While the backend server that used to support hosted functionality is no longer maintained, the core frontend still offers a slick note-taking experience. Crossnote’s design takes inspiration from tools like markdown preview extensions and collaborative editors.
    Downloads: 1 This Week
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  • 25
    Pandora Open

    Pandora Open

    Open Source Monitoring System for performance and availability.

    Pandora OPEN is a high-performance, 100% open-source monitoring ecosystem, born as the independent evolution of the Pandora FMS community branch after version 777. Licensed under GPLv2, it provides a modular and sovereign platform for supervising networks, servers, and applications without commercial dependencies. It features multi-platform agents, remote monitoring (SNMP, WMI, HTTP), GIS maps, and advanced visual dashboards. Entirely maintained by the community on GitHub, it ensures total...
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    Downloads: 2,455 This Week
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