- Free open source alternatives of paid software.
Paid software
Free open source alternative app list of CommandBar :
payload
payload is a free, open-source alternative to Contentful . Explore the Docs · Community Help · Roadmap · View G2 Reviews Important Star this repo or keep an eye on it to follow along. Payload is the first-ever Next.js native CMS that can install directly in your existing /app folder. It's the start of a new era for headless CMS. Benefits over a regular CMS It's both an app framework & headless CMS Deploy anywhere, including serverless on Vercel for free Combine your front+backend in the same /app folder if you want Don't sign up for yet another SaaS - Payload is open source Query your database in React Server Components Both admin and backend are 100% extensible No vendor lock-in Never touch ancient WP code again Build faster, never hit a roadblock Quickstart Before beginning to work with Payload, make sure you have all of the required software . pnpx create-payload-app@latest If you're new to Payload, you should start with the website template ( pnpx create-payload-app@latest -t website ). It shows how to do everything - including custom Rich Text blocks, on-demand revalidation, live preview, and more. It comes with a frontend built with Tailwind all in one /app folder. One-click deployment options You can deploy Payload serverlessly in one-click via Vercel and Cloudflare—giving everything you need without the hassle of the plumbing. Deploy on Cloudflare Fully self-contained — one click to deploy Payload with Workers , R2 for uploads, and D1 for a globally replicated database. Deploy on Vercel All-in-one on Vercel — one click to deploy Payload with a Next.js front end, Neon database, and Vercel Blob for media storage. One-click templates Jumpstart your next project with a ready-to-go template. These are production-ready, end-to-end solutions designed to get you to market fast. Build any kind of website , ecommerce store , blog , or portfolio — complete with a modern front end built using React Server Components and Tailwind . 🌐 Website 🛍️ Ecommerce 🎉 NEW 🎉 We're constantly adding more templates to our Templates Directory . If you maintain your own, add the payload-template topic to your GitHub repo so others can discover it. 🔗 Explore more: Official Templates Community Templates ✨ Payload Features Completely free and open-source Next.js native, built to run inside your /app folder Use server components to extend Payload UI Query your database directly in server components, no need for REST / GraphQL Fully TypeScript with automatic types for your data Auth out of the box Versions and drafts Localization Block-based layout builder Customizable React admin Lexical rich text editor Conditional field logic Extremely granular Access Control Document and field-level hooks for every action Payload provides Intensely fast API Highly secure thanks to HTTP-only cookies, CSRF protection, and more Request Feature 🗒️ Documentation Check out the Payload website to find in-depth documentation for everything that Payload offers. Migrating from v2 to v3? Check out the 3.0 Migration Guide on how to do it. 🙋 Contributing If you want to add contributions to this repository, please follow the instructions in contributing.md . 📚 Examples The Examples Directory is a great resource for learning how to setup Payload in a variety of different ways, but you can also find great examples in our blog and throughout our social media. If you'd like to run the examples, you can use create-payload-app to create a project from one: npx create-payload-app --example example_name You can see more examples at: Examples Directory Payload Blog Payload YouTube 🔌 Plugins Payload is highly extensible and allows you to install or distribute plugins that add or remove functionality. There are both officially-supported and community-supported plugins available. If you maintain your own plugin, consider adding the payload-plugin topic to your GitHub repository for others to find. Official Plugins Community Plugins 🚨 Need help? There are lots of good conversations and resources in our Github Discussions board and our Discord Server. If you're struggling with something, chances are, someone's already solved what you're up against. 👇 GitHub Discussions GitHub Issues Discord Community Help ⭐ Like what we're doing? Give us a star 👏 Thanks to all our contributors
Free
Linux
CopilotKit
CopilotKit is a free, open-source alternative to CommandBar . CopilotKit Docs · Examples · Enterprise Intelligence Platform · Discord Build agent-native applications — on any framework, on any surface. Generative UI, shared state, and human-in-the-loop workflows for React, Angular, Vue, React Native — and in Slack and Microsoft Teams. What is CopilotKit CopilotKit is a best-in-class SDK for building full-stack agentic applications, Generative UI, and chat applications. What started as a React library is now the horizontal layer between your agents and your users : the same agent can power your web app, your mobile app, and your team's Slack or Microsoft Teams workspace. We are the company behind the AG-UI Protocol - adopted by Google, LangChain, AWS, Microsoft, Mastra, PydanticAI, and more! Quick Start Up and running in under five minutes. All you need is an LLM key (OpenAI, Anthropic, Gemini, etc.). npx copilotkit@latest create Agent Skills CopilotKit ships agent skills that teach your coding agent (Claude Code, Codex, Cursor, Gemini, and others) how to set up, build with, integrate, debug, and upgrade CopilotKit. Install them into any project directory: npx copilotkit@latest skills install Run it again any time to refresh to the latest skills. Bring Your App to Life Whole.Generative.UI.v5.mp4 Add AI to your app in 1 minute Features: Chat UI – A fully customizable chat interface that supports message streaming, tool calls, and agent responses. Backend Tool Rendering – Enables agents to call backend tools that return UI components rendered directly in the client. Generative UI – Allows agents to generate and update UI components dynamically at runtime based on user intent and agent state. Shared State – A synchronized state layer that both agents and UI components can read from and write to in real time. Human-in-the-Loop – Lets agents pause execution to request user input, confirmation, or edits before continuing. Self-Learning (early access) – Agents that continuously improve from user feedback via in-context reinforcement learning (CLHF). 🧩 Works With Your Stack One agent backend. Every frontend. Platform Status Get Started ⚛️ React / Next.js ✅ GA Quickstart 🅰️ Angular ✅ Supported Source Code & Quickstart 💚 Vue ✅ Supported Source Code - Quickstart coming soon 📱 React Native ✅ Supported Quickstart 💬 Slack / Microsoft Teams ✅ Supported Channels · Quickstart 🔜 Discord / WhatsApp / Telegram / Google Chat / iMessage / SMS 🟡 Coming soon Channels Your agent logic stays the same — AG-UI handles the wire protocol, CopilotKit handles the UI layer for each framework and channel. 💬 Channels: One Agent, Every Chat App The Channels SDK takes the agent you already built and drops it into the chat apps your users live in — same tools, same shared state, same human-in-the-loop, no rewrite ( Learn more ). Slack – Agents as first-class Slack apps: threads, tool calls, and human-in-the-loop approvals right in the channel. Microsoft Teams – Bring agentic workflows to the enterprise, where your org already lives. 👉 Explore Channels → 🧠 Self-Learning Agents Improve your product by learning over time. With Continuous Learning from Human Feedback (CLHF) , part of the CopilotKit Intelligence Platform , agents improve with every interaction: In-context reinforcement learning – Agents automatically improve from user interactions, no model fine-tuning required. Automatic prompt augmentation – Agent behavior adapts based on recent interactions and outcomes. Per-user adaptation – Agents learn individual preferences and get better for each user over time. Threads & persistence – Full interaction history — generative UI, human-in-the-loop, shared state — captured across sessions. Available via CopilotKit Cloud or self-hosted. 🔒 Early access: We're onboarding teams now. 👉 Request early access → cpk-cli.mp4 What this gives you: CopilotKit installed – Core packages are fully set up in your app Provider configured – Context, state, and hooks ready to use Agent <> UI connected – Agents can stream actions and render UI immediately Deployment-ready – Your app is ready to deploy Complete getting started guide → How it works: CopilotKit connects your UI, agents, and tools into a single interaction loop. This enables: Agents that ask users for input Tools that render UI Stateful workflows across steps and sessions One agent, deployed across web, mobile, and chat platforms ⭐️ useAgent Hook The useAgent hook sits directly on AG-UI, giving you full programmatic control over the agent connection. // Programmatically access and control your agents const { agent } = useAgent ( { agentId : "my_agent" } ) ; // Render and update your agent's state return < div > < h1 > { agent . state . city } < / h1 > < button onClick = { ( ) => agent . setState ( { city : "NYC" } ) } > Set City < / b u t t o n > < / div > Check out the useAgent docs to learn more. CopilotKit.UseAgent.Graphic.Motion_2.mp4 Generative UI Generative UI is a core CopilotKit pattern that allows agents to dynamically render UI as part of their workflow. demo-generative-ui.mp4 Compare the Three Types Explore: Static (AG-UI Protocol) Declarative (A2UI) Open-Ended (MCP Apps & Open JSON) Generative UI educational repo → 🖥️ AG-UI: The Agent–User Interaction Protocol Connect agent workflows to user-facing apps, with deep partnerships and 1st-party integrations across the agentic stack—including LangChain, CrewAI, Mastra, PydanticAI, and more. npx create-ag-ui-app my-agent-app Learn more in the AG-UI README → 🤝 Community What's New Have questions or need help? Join our Discord → Read the Docs → Try the Enterprise Intelligence Platform → Stay up to date with our latest releases! Follow us on LinkedIn → Follow us on X → 🙋🏽♂️ Contributing Thanks for your interest in contributing to CopilotKit! 💜 We value all contributions, whether it's through code, documentation, creating demo apps, or just spreading the word. Here are a few useful resources to help you get started: For code contributions, CONTRIBUTING.md . For documentation-related contributions, check out the documentation contributions guide . Want to contribute but not sure how? Join our Discord and we'll help you out! 📄 License This repository's source code is available under the MIT License .
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