Stability AI

AutoGPT

Free trial

AutoGPT began as an open-source autonomous agent project and now ships a hosted platform built around named AI specialists. You pick an expert for content, sales, research or administration, brief it in plain language, and connect the accounts it may use. A coordinating assistant called Otto routes requests to the right specialist and can pull several into one job. Experts run on schedules, and each has its own spending approval threshold. A workflow builder remains available for defining steps by hand, and the whole platform can still be self-hosted with Docker.

n8n

Freemium

n8n is a workflow automation tool you can run in the cloud or host yourself. Workflows are built on a visual canvas with more than 1,000 nodes, and each run counts as one execution no matter how many steps it contains. The AI agent node, MCP server trigger and chat hosting place language models inside ordinary business automations, connected to databases, CRMs and internal APIs. Code steps support JavaScript and Python when the visual builder runs out of room. The Community Edition is free to self-host, and cloud plans are priced by monthly executions.

CrewAI

Freemium

CrewAI provides both an open-source Python framework and a hosted studio for building multi-agent systems. In the studio you describe a process in plain language or sketch it on a canvas, and the builder assembles agents with roles, tools and an order of steps. Workflows export as a Python project, an MCP server or a UI component, and connect to GitHub for version control. The runtime records every model and tool call for tracing, and adds approval gates, PII redaction and role-based access for teams that need oversight before agents reach production systems.

Zed

Freemium

Zed is an open-source code editor built for speed, with a native interface and GPU-accelerated rendering. It includes an agent panel that can read your project, edit files, and run commands, plus edit predictions that suggest the next change as you type. Zed connects to hosted models through a Pro subscription or to your own keys from Anthropic, OpenAI, Google, Bedrock, Ollama, and other providers. It also runs external agents such as Claude Agent and Codex CLI through the Agent Client Protocol. Multiplayer editing lets several developers share one workspace in real time.

Clipdrop

Freemium

Clipdrop is a collection of single-purpose image utilities rather than one general editor. Background removal cuts a subject out of a photo, cleanup erases objects, people or text, uncrop extends the frame, and the upscaler enlarges files while reducing noise. Relight adds a light source to an existing photo, replace background swaps the setting, and a text-to-image tool creates new pictures from prompts. Each tool works in the browser, and a desktop app adds a Photoshop plugin. Free accounts get about twenty uses per tool per day at standard resolution; Pro raises limits to 1,000 and unlocks high-resolution exports.

Playground AI

Freemium

Playground AI is a design tool that combines image generation with templates for logos, t-shirts, stickers, posters and social posts. You describe an idea, and the editor lays out text and graphics around it, keeping the generated image on a separate layer you can edit without starting over. It connects to several external models, including GPT Image, Nano Banana and Seedream, and each generation draws from one shared monthly credit pool. Background removal, upscaling and SVG export are included on paid plans. The free tier allows five images every three hours and three monthly model credits.