Help expand the directory by suggesting a product or submitting an open-source alternative.
Open-Awesome is built by the community, for the community. Submit a project, suggest an awesome list, or help improve the catalog on GitHub.
Most searched proprietary tools with open-source replacements
An open-source API development ecosystem for testing HTTP, WebSocket, GraphQL, and other APIs with real-time collaboration.
An open-source, fullstack Next.js framework that provides a TypeScript backend and admin panel, usable as a headless CMS or for building applications.
A privacy-focused, open-source note-taking app with end-to-end encrypted sync across all major platforms.
A standard library for JavaScript and TypeScript with an emphasis on numerical and scientific computation.
Showing 2,872 products with open-source alternatives
A fast, extensible CommonMark/Markdown parser for Java with source-level AST and emulation of other markdown processors.
A modular Ruby toolkit for handling file uploads, processing, and storage with support for cloud services and multiple ORMs.
A hyperparameter-free gradient boosting machine with a simple budget parameter, built for high performance with Rust and bindings for Python and R.
A sampling JVM profiler that avoids safepoint bias for accurate performance analysis.
A database migration tool for sidegrading from Adobe Commerce (Enterprise) to Magento Open Source (Community) by removing EE-specific schema.
An open-source PDF platform for editing, converting, signing, and automating PDFs with a self-hostable API and desktop app.
A TypeScript library that bridges Esri ArcGIS REST services with MapLibre GL JS and Mapbox GL JS.
A standalone tool for viewing massive point clouds (billions of points) in your browser or via a native SDL client.
Real-time collaborative editing, remote cursors, shared terminals, and E2E encryption for Neovim, inspired by VS Code Live Share.
An open-source music notation software for creating, editing, and printing sheet music with WYSIWYG design.
A Godot 4 plugin that simplifies and enhances camera behaviors for 2D and 3D games, inspired by Cinemachine.
Monitors AWS, GCP, OpenStack, and GitHub for policy changes and insecure configurations, tracking asset changes over time.
TypeScript decorators for building API services with the Oak framework using TC39 decorator standards.
A simple and fast JSON parser implemented in ANSI C with a reference-counting object model.
A pure Ruby syntax highlighter compatible with Pygments, supporting over 200 languages and outputting HTML or ANSI 256-color text.
A Rust-powered interpreter for the Wolfram Language, enabling CLI scripting and Jupyter notebooks.
A high-performance, multi-process, multi-fiber Rack-compatible web server for Ruby with native HTTP/1, HTTP/2, and TLS support.
A fast, cross-platform image decoding library with clean APIs for C, C++, and Python, supporting 20+ formats.
A system monitor for macOS with customizable widgets and a modern UI, designed as a better alternative to Activity Monitor.
A request/response inspector middleware for ASP.NET Core that captures HTTP traffic and provides a real-time web viewer for debugging.
An R package that extends ggplot2 to create publication-ready graphics with statistical details embedded directly in the plots.
A Ruby process monitoring tool inspired by Bluepill and God, built for production stability with advanced features like chained restarts and health checks.
A localization and translation tool for Delphi applications that replaces the standard Delphi Translation Manager.
AWX is an open-source web UI, REST API, and task engine for managing and scaling Ansible automation.
A composable, all-in-one mail server that implements SMTP, IMAP, DKIM, SPF, DMARC, and more in a single daemon.
A JavaScript tool for populating JSON data with circular references, offering a transparent interface similar to Falcor and GraphQL.
A Common Lisp library for declaratively reading and writing complex binary file formats and network protocols.
Cross-platform GUI desktop application for managing Redis databases with an intuitive visual interface.
An OCI-native artifact manager and image registry that is easy to deploy and maintain, supporting Docker, Helm, and other OCI artifacts.
An open-source, self-hosted ML experiment tracker with a performant UI and SDK for comparing and querying training runs.
A collection of object-oriented Java primitives as an alternative to procedural libraries like Guava and Apache Commons.
A single-file TLS 1.0-1.3 and DTLS implementation in C, using libtomcrypt for cryptography.
A cross-platform backup tool for PC video game save data, supporting over 19,000 games and multiple game stores.
Mautic is the world's largest open source marketing automation software, enabling businesses to run fully integrated campaigns.
A serverless blog commenting system built with AWS Lambda, API Gateway, DynamoDB, and S3.
A secure cross-platform image burner with encryption, secure erase, and hash verification for creating bootable USB drives.