Find the best open-source alternatives

Open-source authentication and session management service, providing a self-hosted alternative to Auth0, Firebase Auth, and AWS Cognito.

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

A streaming build system and toolkit for automating and enhancing development workflows.

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

A fully compliant, embeddable high-performance MQTT v5 and v3.1.1 broker/server written in Go for IoT and pub/sub applications.

A Kafka-compatible streaming data platform that's 10x faster, with no ZooKeeper or JVM dependencies.

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

An open-source AI agent for the terminal that helps developers understand codebases, automate tasks, and ship faster.

MinIO is a high-performance, S3-compatible object storage solution for AI/ML, analytics, and data-intensive workloads.

A QEMU-based interactive runtime analyzer for dynamic binary analysis and reverse engineering.

Identifies compilers, packers, obfuscators, and other characteristics in Android APK and DEX files.

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

An open-source business intelligence and embedded analytics platform that enables everyone to explore and visualize data without SQL.

High-performance Node.js image processing module for resizing, converting, and manipulating JPEG, PNG, WebP, AVIF, GIF, and TIFF images.

A high-performance multi-language serialization framework using JIT compilation and zero-copy techniques for fast data exchange.

A fast, local-first, reactive NoSQL database for JavaScript applications with realtime sync capabilities.

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

A lightweight, high-performance, embeddable MQTT broker server written in Go, supporting distributed clusters and MQTT v3.0, v3.1.1, and v5.0.

Expose your localhost to the world for easy testing and sharing without DNS or deployment.

A distributed stream processing engine in Rust that performs stateful computations on real-time data with subsecond results.

A community-developed, drop-in replacement for MySQL with enhanced features, performance, and open licensing.

A full-text search engine library written in Rust, inspired by Apache Lucene.

A standard library for JavaScript and TypeScript with an emphasis on numerical and scientific computation.

An open-source database DevOps tool providing CI/CD, SQL review, and security features for managing database schema changes.

An Internet-scale TCP port scanner that can scan the entire Internet in under 5 minutes using asynchronous SYN packets.

A distributed computation system written in Go for parallel and cluster processing, similar to Hadoop MapReduce and Spark.

A simple open-source self-hosted file sharing solution with resumable uploads and password protection.

A minimal, well-tested library for training and using feedforward artificial neural networks in ANSI C.

A single-file public domain math library for game and graphics programming with C/C++ support.

A private messaging platform with no user identifiers, using disposable relay nodes for metadata protection.

A Python-based interactive packet manipulation program and library for network analysis, scanning, and security testing.

A Swift framework for reactive and functional programming, providing composable primitives for streams of values over time.

Open-source accounting software for small businesses and freelancers, built with Laravel and Vue.js.

A high-performance NoSQL database compatible with Apache Cassandra and Amazon DynamoDB, built on a shared-nothing architecture.

High-performance Node.js image processing module for resizing, converting, and manipulating JPEG, PNG, WebP, AVIF, GIF, and TIFF images.

Fast and extensible multi-platform HTTP/1-2-3 web server with automatic HTTPS by default.