Open Source Alternatives to 21st.dev

Hugging Face is the leading AI community and platform for machine learning collaboration, enabling developers to build, share, and deploy models, datasets, and applications.

Developer tools for building modern web applications.

Best free & open source AI personal assistant.

Open-source, self-hostable AI chatbot UI.

A popular open-source Linux distribution.

Full-stack observability platform built on open standards for unifying telemetry and accelerating troubleshooting.

Cloud data warehouse for building next-gen analytics experiences with sub-second performance, designed for engineers and AI agents.

Octopus Deploy provides a unified platform for continuous delivery, automating deployments, runbooks, and operations for modern applications.

A cloud database company providing a unified platform for transactional, analytical, and AI workloads.

Open-source backend-as-a-service platform for building scalable applications.

Open-source project for instant distributed tracing and metrics using eBPF and OpenTelemetry.

Open-core company building tools for modern backend engineers to ship faster and better.

Decentralized cloud marketplace for compute resources, leveraging blockchain technology (DePIN).

Open-source web browser focused on privacy, user control, and an open internet.

Platform providing managed open source software with security, maintenance, and licensing assurances for enterprises.

An open-source platform for building and running AI coding agents that automate software development tasks.

An open-source data platform for manufacturers to access and structure machine data.

A managed, private, and production-grade environment for OpenClaw, offering access to over 500 AI models and essential tools.

A nonprofit endowment aiming to permanently solve the funding problem for open-source software maintainers.

Open-source React library for building production-grade AI chat interfaces.

A global non-profit foundation dedicated to improving software security through open community collaboration.

An open-source machine learning framework for accelerating AI research and production deployment.

Open-source module bundler for JavaScript applications, transforming front-end assets into static files.

Visualize, edit, and collaborate on database schemas instantly with a powerful DB diagram editor.

An open-source, cross-platform JavaScript runtime environment.

Space-Grade Go Web Framework

A free WordPress job board plugin

The Cloud Native Computing Foundation (CNCF) is an open-source software foundation that aims to make cloud-native computing universal and sustainable.

Extremely fast JavaScript bundler and minifier for the web, written in Go.

A highly configurable and efficient tiling window manager for X11.

An open-source machine learning platform for building and deploying AI applications.

A non-profit organization stewarding open source software projects, communities, and collaborative industry ecosystems.

A free, cross-platform, open-source developer platform for building many types of applications.

An open standard for connecting AI assistants to external data sources and tools.

Open-source standard enabling secure, programmatic commerce transactions between AI agents and online businesses.

A UNIX shell written entirely in Ruby, offering deep integration with Ruby code.