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  • Paessler: Easy to Use With Enterprise Power. Free Trial Icon
    Paessler: Easy to Use With Enterprise Power. Free Trial

    A low-code dashboard makes monitoring intuitive for any admin, while scripting and custom sensors give experts full control.

    You shouldn't have to choose between a monitoring tool that's easy to use and one that's powerful enough for a complex environment. PRTG's low-code interface lets any admin build dashboards, set alerts and monitor devices without scripting, while custom sensors and full API access are there when your team needs deeper control. One platform, no compromise. Download a free 30-day trial now.
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  • MongoDB Atlas runs apps anywhere Icon
    MongoDB Atlas runs apps anywhere

    Deploy in 115+ regions with the modern database for every enterprise.

    MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
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  • 1
    Centrifugo

    Centrifugo

    Scalable real-time messaging server in a language-agnostic way

    ...Many built-in features can help to build an attractive real-time application in a limited time. Centrifugo provides different types of subscriptions, hot channel history, instant presence, RPC calls. There is also the possibility to proxy WebSocket events to the application backend over HTTP or GRPC and more.
    Downloads: 38 This Week
    Last Update:
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  • 2
    Centrifuge

    Centrifuge

    Real-time messaging library for Go with scalability in mind

    ...Before v1 release patch version updates only have backward-compatible changes and fixes, minor version updates can have backward-incompatible API changes. Master branch can have unreleased code. Only two last Go minor versions are officially supported by this library. Centrifuge library is a real-time core of Centrifugo server. It's a general-purpose real-time messaging library for Go programming language. Real-time messaging can help create interactive applications where events are delivered to online users with minimal delay. Chats apps, live comments, multiplayer games, real-time data visualizations, collaborative tools, etc. can all be built on top of Centrifuge library. ...
    Downloads: 4 This Week
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  • 3
    Node.js

    Node.js

    Cross-platform JavaScript runtime environment

    ...The ecosystem is supported by npm, one of the largest package managers, providing access to thousands of libraries and tools. Node.js is widely used for backend development, real-time applications, and microservices architectures.
    Downloads: 67 This Week
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  • 4
    Phoenix Framework

    Phoenix Framework

    Peace of mind from prototype to production

    Phoenix is a high-performance, productive web development framework written in Elixir. It runs on the Erlang VM (BEAM). It is designed to support both traditional request/response web applications. It also supports real-time, soft-real-time applications via WebSockets, channels, PubSub, and presence features. Phoenix emphasizes fault tolerance, scalability, and developer productivity. It provides tools like code generators, LiveView integration, templating, routing, and a flexible plug pipeline. Phoenix runs on the Erlang VM with the ability to handle millions of WebSocket connections alongside Elixir's tooling for building robust systems. ...
    Downloads: 7 This Week
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  • Custom VMs From 1 to 96 vCPUs With 99.95% Uptime Icon
    Custom VMs From 1 to 96 vCPUs With 99.95% Uptime

    General-purpose, compute-optimized, or GPU/TPU-accelerated. Built to your exact specs.

    Live migration and automatic failover keep workloads online through maintenance. One free e2-micro VM every month.
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  • 5
    JOML

    JOML

    A Java math library for OpenGL rendering calculations

    JOML is a high-performance, lightweight math library designed for 3D graphics applications in Java, particularly those using OpenGL, Vulkan, or LWJGL. It provides a complete suite of vector, matrix, quaternion, and geometry operations essential for real-time graphics and game development. Unlike other math libraries, JOML avoids object allocation during calculations, making it highly optimized for garbage-free performance. With precise control over mathematical operations and compatibility with low-level APIs, JOML is a go-to library for Java developers working on real-time 3D engines and simulations.
    Downloads: 11 This Week
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  • 6
    Radar

    Radar

    The missing open source Kubernetes UI

    ...Radar emphasizes performance and simplicity, avoiding heavy agents or polling by using Kubernetes watch APIs for real-time updates. It also integrates with tools like Helm, ArgoCD, and Flux for deployment and GitOps workflows. Overall, it acts as a developer-friendly Kubernetes dashboard and IDE focused on speed, transparency, and local control.
    Downloads: 15 This Week
    Last Update:
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  • 7
    ali

    ali

    Generate HTTP load and plot the results in real-time

    Generate HTTP load and plot the results in real-time. A load testing tool capable of performing real-time analysis, inspired by vegeta and jplot. ali comes with an embedded terminal-based UI where you can plot the metrics in real-time, so lets you perform real-time analysis on the terminal. Press l (or h) to switch the displayed chart. On all charts, you can click and drag to select a region to zoom into.
    Downloads: 0 This Week
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  • 8
    GPUPixel

    GPUPixel

    Real-time image and video processing library similar to GPUImage

    GPUPixel is a real-time image and video processing library written in C++11, based on OpenGL/ES. It offers functionalities similar to GPUImage, including built-in beauty filters, enabling efficient processing and rendering of visual effects on images and videos.
    Downloads: 5 This Week
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  • 9
    Frappe

    Frappe

    Low code web framework for real world applications

    Frappe is a full-stack, low-code web framework written in Python and JavaScript, used to build scalable and modular enterprise applications. It powers ERPNext and includes tools for REST APIs, user management, document modeling, workflows, and real-time updates. Frappe uses a "model-view-controller" approach with its own ORM and frontend system, enabling rapid development without sacrificing control or performance.
    Downloads: 4 This Week
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  • Ship Agents Faster Icon
    Ship Agents Faster

    Transform your applications and workflows into powerful agentic systems at global scale.

    Gemini Enterprise Agent Platform lets you rapidly build, scale, govern and optimize production-ready agents grounded in your organization's data. The platform enables developers to build custom or pre-built agents for virtually any use case. New customers get $300 in free credits.
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  • 10
    Yoast WordPress SEO

    Yoast WordPress SEO

    Yoast SEO for WordPress

    The Yoast SEO plugin is the most popular SEO tool for WordPress, offering comprehensive tools to optimize content for search engines. It provides real-time page analysis, readability checks, and automated metadata handling to improve website visibility.
    Downloads: 9 This Week
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  • 11
    ACE-Step UI

    ACE-Step UI

    The Ultimate Open Source Suno Alternative

    ...The interface is useful for debugging, monitoring, or presenting step-by-step execution of complex systems. It supports dynamic updates, allowing users to observe how processes evolve in real time. The project emphasizes clarity and usability, making it easier to understand multi-step logic. It is particularly valuable in agent-based or workflow-driven applications. Its modular design allows integration into larger systems.
    Downloads: 20 This Week
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  • 12
    Keyviz

    Keyviz

    Keyviz is a free and open-source tool to visualize your keystrokes

    Keyviz is an open-source tool written in Dart/C++ that visualizes your keystrokes and mouse actions in real-time, overlaying them on screen. It’s ideal for screencasts, presentations, livestreams, or instructional videos, showing users exactly what keys or buttons you press, and visually highlights them with customizable styles and filters.
    Downloads: 22 This Week
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  • 13
    Handlebars.Net

    Handlebars.Net

    A real .NET Handlebars engine

    Handlebars.js is an extension to the Mustache templating language created by Chris Wanstrath. Handlebars.js and Mustache are both logicless templating languages that keep the view and the code separated like we all know they should be. Handlebars.Net doesn't use a scripting engine to run a Javascript library - it compiles Handlebars templates directly to IL bytecode. It also mimics the JS library's API as closely as possible. Blistering-fast Handlebars.js templates in your .NET application....
    Downloads: 16 This Week
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  • 14
    k6

    k6

    A modern load testing tool, using Go and JavaScript

    ...Migrate from local tests to the cloud using the same script for both environments. Verify that applications can handle the expected traffic. Adapt your testing: stress tests, peak tests, soak tests, etc. Mix browser and API testing—interact with real browsers and collect frontend metrics to get a holistic user view. Simulate real-world traffic in your chaos experiments. Inject system failures in your k6 tests.
    Downloads: 36 This Week
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  • 15
    Cork

    Cork

    A fast GUI for Homebrew written in SwiftUI

    A fast GUI for Homebrew written in SwiftUI. I'd like to personally thank Seb Jachec for implementing a system for getting real-time outputs of Brew commands. Pre-compiled, always up-to-date versions are available from my Homebrew tap, which you get access to by donating 5€/month. You can donate through Ko-Fi or GitHub Sponsors. However, as Cork is open source, you can always compile it from source for free.
    Downloads: 14 This Week
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  • 16
    Zoo Design Studio

    Zoo Design Studio

    The Zoo Design Studio app

    ...The application is powered by a GPU-first geometry engine that streams rendered output as video frames, enabling high-performance modeling even when heavy computation is offloaded to remote infrastructure. It uses WebSockets for real-time communication between the client and the modeling engine, allowing immediate feedback and interactive design updates.
    Downloads: 24 This Week
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  • 17
    Qiskit

    Qiskit

    Qiskit is an open-source SDK for working with quantum computers

    ...The transpiler translates Qiskit code into an optimized circuit using a backend’s native gate set, allowing users to program for any quantum processor or processor architecture with minimal inputs. Users can run and schedule jobs on real quantum processors, and employ Qiskit Runtime to orchestrate quantum programs on cloud-based CPUs, QPUs, and GPUs.
    Downloads: 30 This Week
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  • 18
    Supabase

    Supabase

    The open source Firebase alternative

    Create a backend in less than 2 minutes. Start your project with a Postgres database, authentication, instant APIs, real-time subscriptions and storage. Every project is a full Postgres database, the world's most trusted relational database. Add user sign-ups and logins, securing your data with Row Level Security. Store, organize and serve large files. Any media, including videos and images. Write custom code and cron jobs without deploying or scaling servers.
    Downloads: 169 This Week
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  • 19
    WhatCable

    WhatCable

    macOS menu bar app that tells you, in plain English

    ...Its lightweight integration and developer-oriented workflow make it practical for both development and debugging environments. Overall, whatcable acts as an observability utility for Rails real-time communication systems.
    Downloads: 3 This Week
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  • 20
    Flet

    Flet

    Flet enables developers to easily build realtime web and mobile apps

    ...With Flet you just write a monolith stateful app in Python only and get a multi-user, real-time Single-Page Application (SPA). To start developing with Flet, you just need your favorite IDE or text editor. With no SDKs, no thousands of dependencies, no complex tooling, Flet has a built-in web server with assets hosting and desktop clients.
    Downloads: 21 This Week
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  • 21
    Hopp

    Hopp

    The best OSS remote pair programming app

    Hopp is an open-source remote pair programming application designed to enable developers to collaborate in real time with high-quality screen sharing and low-latency communication. Built using modern technologies such as Tauri, WebRTC, and LiveKit, it focuses on delivering a fast and seamless experience for distributed teams working together on code. The platform allows multiple users to join shared sessions, making it suitable not only for traditional pair programming but also for mob programming scenarios where several developers collaborate simultaneously. ...
    Downloads: 4 This Week
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  • 22
    ProgressMeter.jl

    ProgressMeter.jl

    Progress meter for long-running computations

    ProgressMeter.jl is a lightweight Julia package that provides customizable progress bars for long-running loops and computations. It allows developers to track the progress of tasks with real-time visual feedback in the terminal, making it easier to monitor performance, debug slow operations, or report computational progress in user-facing applications.
    Downloads: 4 This Week
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  • 23
    massCode

    massCode

    A free and open source code snippets manager for developers

    ...It's great for classroom use, team meetings, conferences or simply reviewing notes on your own. You can not only collect snippets but also see the rendering result for HTML and CSS in real-time. Test the idea or just view the result.
    Downloads: 19 This Week
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  • 24
    Penpot

    Penpot

    The first open source design and prototyping tool

    ...All stakeholders can access a complete set of interactive prototypes, design systems, components, feedback loop and pixel designs. - Design and development collaborate for real. Penpot brings both code-ready design capabilities and the familiarity of developer tools to the same workspace. - Open Standards for the design work. This means zero vendor lock-in and high interoperability. - Unique Flex Layout that allows you to create flexible designs that can adapt automatically
    Downloads: 29 This Week
    Last Update:
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  • 25
    Sandspiel

    Sandspiel

    Creative cellular automata browser game

    ...Built with Rust compiled to WebAssembly and rendered using WebGL, it achieves high-performance simulation directly in the browser without requiring installation. The project focuses on creative exploration, enabling users to draw elements onto a canvas and observe emergent behaviors as they interact in real time. Its simulation engine models particle dynamics and fluid interactions, creating visually engaging and often unpredictable outcomes that mimic natural processes. Sandspiel also emphasizes community interaction by allowing users to share, fork, and remix creations, turning the platform into a collaborative sandbox for experimentation. ...
    Downloads: 16 This Week
    Last Update:
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