Find the best open-source alternatives

A TypeScript library providing persistent immutable collections and functional programming constructs like Option, Either, and Future.

An Elixir feature flag library with multi-level storage, caching, and a web dashboard for runtime toggles.

A Ruby gem for performing time calculations based on business hours, holidays, and custom working schedules.

A universal state management SDK offering signal-based reactivity with three paradigms (Store, Atom, Proxy) and support for all major JavaScript frameworks.

A cron scheduler extension for the Que async job worker, enabling scheduled background jobs via YAML configuration.

A hackable HTTP client for F# and .NET that combines convenience with flexibility for both interactive exploration and production use.

A command-line tool for plotting and cutting SVG designs on Silhouette plotters with registration marks and layer filtering.

An open-source identity and access management platform with multi-tenancy, SSO, MFA, and API-first design for developers.

A client-side headless CMS for editing Markdown and other files directly in a GitHub repository.

A high-performance, feature-rich microservices framework for Go, designed for simplicity and scalability.

An open-source cross-platform audio sample manager and file explorer that organizes and scans audio folders.

A native Mac app wrapper for Facebook Messenger that provides a desktop experience.

A macOS app that gathers all windows of a selected application to your current screen with per-app window control and workspace management.

A fast, cross-platform image decoding library with clean APIs for C, C++, and Python, supporting 20+ formats.

A lightweight, platform-independent tensor library with autograd for the JVM, accelerated by OpenCL.

A full-featured, cross-platform Twitter client for the command line, built with Vorpal and inspired by TTYtter.

A jQuery plugin for responsive zoom of images and other content with scroll, drag, and touch interactions.

A minimalist .NET-based UTXO tracker for HD wallets, designed to work with pruned Bitcoin nodes and multiple altcoins.

A hackable, lightweight icon set with ligature font support, SVG, PNG, and JSON formats, designed on an 8-grid for clarity.

An open-source Ruby on Rails CRM platform for managing leads, contacts, opportunities, and campaigns with group collaboration.

A declarative JSON format for creating, saving, and sharing interactive data visualizations.

A stripped-down, bare-bones authentication library for Ruby on Rails applications.

A naive linter for English prose that helps developers improve their writing by detecting common style issues.

An open-source, modular text editor for macOS with a focus on extensibility and developer experience.

A browser extension that searches Reddit for the current webpage.

A .NET Core global tool that runs AppVeyor CI builds locally using your appveyor.yml configuration.

A Laravel package that adds a full-featured blogging platform with analytics to any Laravel application.

A fully client-side JavaScript diagramming library using SVG and HTML for rendering.

A versatile open-source tool for interfacing with and debugging digital electronics through a USB-connected FPGA board.

An Ansible playbook to automate the setup of a full-featured home server or NAS replacement using Ubuntu and Docker containers.

A customizable, block-based reimplementation of UIActionSheet for iOS with light/dark themes and UIAppearance support.

A .NET library that replaces any method (including static and non-virtual) with a delegate at runtime using managed code.

A secure, extensible command-line Android APK vulnerability analyzer written in Rust for automated security testing.

A Sitecore module that enables targeted content indexing by declaring computed search fields to capture presentation-level data for improved search.

A general-purpose literate programming engine for dynamic report generation in R, designed to give users full control over output.

A fast, encrypted, and deduplicated backup tool written in Rust, compatible with restic repositories.