Find the best open-source alternatives

Design and prototype custom UI, animations, and transitions directly in Interface Builder for iOS apps without writing code.

A libre, Unix-like reverse engineering framework and command-line toolset for analyzing, debugging, and modifying binaries.

UI components and hooks for building robust, customizable, and accessible video/audio players on the web.

A lightweight, extensible code editor with built-in Git support, debugging, and IntelliSense for multiple languages.

An open-source platform for secrets management, certificate lifecycle, and privileged access management with self-hosting options.

A modern, multi-threaded HTTP benchmarking tool for generating significant load on web servers and APIs.

A near-zero config .NET library for task scheduling, queuing, caching, event broadcasting, and mailing with simple, expressive syntax.

Create PDF documents interactively using HTML, Pug, and web technologies like CSS and JavaScript.

An open-source APM tool for monitoring and tracing transactions in large-scale distributed Java, PHP, and Python applications.

pyinfra turns Python code into shell commands and runs them on your servers for fast, scalable infrastructure automation.

A modern, multi-threaded HTTP benchmarking tool for generating significant load on web servers and APIs.

A Kafka-compatible streaming data platform that is 10x faster, simpler to operate, and free from ZooKeeper and JVMs.

An open-source APM tool for monitoring and tracing transactions in large-scale distributed Java, PHP, and Python applications.

An open-source HTML presentation framework for creating beautiful, interactive slides directly in the browser.

A zero-configuration web application bundler that automatically handles assets, transforms, and dependencies.

A standalone UI tool for managing Git repositories with Windows Explorer and Visual Studio integration.

A free, open-source screen capture and file sharing tool for Windows with extensive customization and upload destinations.

A system for building agents that perform automated tasks online, like a self-hosted IFTTT or Zapier.

A Ruby on Rails template for creating your own crowdfunding website, allowing you to collect pre-orders and payments.

A fast, privacy-first desktop API client for REST, GraphQL, WebSockets, SSE, and gRPC.

A practical functional library for JavaScript programmers emphasizing immutability and currying.

A command-line productivity booster that tracks and provides quick access to frequently used files and directories using frecency ranking.

A tiny and elegant JavaScript HTTP client based on the Fetch API with retries, timeouts, and hooks.

A distributed storage system for object storage (S3), file systems, and Iceberg tables, optimized for billions of files with O(1) disk access.

A unified tool that manages development tool versions, environment variables, and project tasks from a single configuration.

An open source, self-hosted implementation of the Tailscale control server for personal and small organization networks.

A dynamic, real-time, high-performance cloud-native API gateway and AI gateway for traffic management and service orchestration.

A cross-platform integrated development environment (IDE) for building applications with Qt across desktop, embedded, and mobile platforms.

A free, open-source, cross-platform music streaming player that finds and plays music from various sources without ads or tracking.

A command-line tool for building Open Container Initiative (OCI) container images without requiring root privileges or Dockerfiles.

An open-source online spreadsheet library with Excel-like features, including formulas, charts, and collaborative editing.

A Java dataframe and visualization library for data loading, cleaning, transformation, and analysis.

A fast and low overhead web framework for Node.js, focused on performance and developer experience.

A continuous file synchronization program that securely syncs files between multiple computers without central servers.

Deploy serverless functions and microservices to Kubernetes with ease, using any language and auto-scaling.

An open-source cross-platform app for secure file and message sharing over local networks without internet.