The open-source alternative to StackAI

Looking for something like StackAI, but open source and free to start? Alfera is the AI coworker your whole team shares: a company brain that syncs your apps, connections shared per person or per team, permissions on every action, and Slack, WhatsApp and email. Self-host it in one click, or start on Alfera Cloud.

In one line: Alfera is open source with a company brain, vs a closed enterprise agent builder.

Enterprise AI agent / workflow builderAlfera on GitHub
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StackAIEnterprise AI agent / workflow builderOpen source, or Alfera Cloud
What it isNo-code drag-and-drop platform for enterprises to build, deploy and govern AI agents and agentic workflows.The AI coworker your whole team shares, with a company brain that syncs your apps. Open source.
Open sourceNoYes, AGPL-3.0
Self-hostEnterprise onlyYes: one click on DigitalOcean or AWS, or one command on any server
PriceFree $0/month: 500 runs/month, 2 projects, 1 seat. Enterprise: custom quoteFree to start: open source to self-host, and Alfera Cloud starts with $10 of free AI usage
Where it worksWeb app (published chat, form and batch interfaces), Slack bot, Microsoft Teams, Chrome extension, REST APISlack, WhatsApp, email from its own address, the web app, a Mac app, the API and MCP
Team useOrganizations with roles and permissions; projects in folders shared with members or groups; a Published Agents catalog for end users.Multiplayer: one coworker for the whole team. It knows who is asking, and each connection is shared with everyone, one project, or one person
PermissionsHuman input steps pause a run for a person's response or approval; deployments can require approval before going live; access control on Enterprise.Allow, ask first, or never, per connection and per action. Approvals in Slack, email or the app, and every action logged
Starts on its ownScheduled Execution, app event triggers from connected providers, and an 'On External Webhook' trigger start workflows on their own.On a schedule, from a webhook, or on 600+ app events
ModelsLLM agnostic: pick a model per agent node; connectors include Anthropic, Azure OpenAI, Cerebras and local models via OpenAI-compatible endpoints.230+ models: Claude, GPT, Gemini, open models, your ChatGPT plan, or your own

Where StackAI is the better choice

IT and enterprise architecture teams in regulated industries that need to orchestrate, deploy and govern AI agents.

  • On-premise and VPC deployment, with HIPAA, GDPR, SOC 2 Type II and ISO 27001 listed on its site
  • 500+ enterprise integrations listed on its home page
  • Release and deployment approvals, an Agentic Development Life Cycle, and dedicated solution engineers

Everything Alfera does

  • A company brain that syncs your apps. Connect Google Drive, Notion, Slack and the rest. Documents sync on their own, keep every version, and every answer draws on them.
  • One coworker for the whole team. It knows who is asking. Many people, many tasks at once, each with their own chats and connections, and shared chats when you want.
  • 3,000+ app connections, shared the way you choose. Each connection is open to everyone, one project, or one person. A personal mailbox stays personal; the support inbox is the team’s.
  • Permissions on every action. Allow, ask first, or never, per connection and per action. Approvals land in Slack, email or the app, and every action is logged.
  • Where your team already is. Slack, WhatsApp, email from its own address, the web app, a Mac app, and your own code through the API and MCP.
  • It starts work by itself. On a schedule, from a webhook, or on 600+ app events in Gmail, HubSpot, Stripe and more.
  • Its own computer. Every chat runs in a sandbox with a terminal and a browser, and its files stay from one chat to the next.
  • Any model. 230+ models: Claude, GPT, Gemini, open models, your ChatGPT plan, or a model you run yourself.
  • Open source, and free to start. AGPL-3.0. Self-host it in one click on DigitalOcean or AWS, or start on Alfera Cloud with $10 of free AI usage.

StackAI and Alfera

Alfera. Alfera is the AI coworker your whole team shares. It has a company brain that syncs your apps, 3,000+ app connections shared per person or per team, permissions on every action, and it works in Slack, WhatsApp, email and the web app. It starts work by itself, runs on any model, and it is open source: self-host it in one click or start free on Alfera Cloud. StackAI is not open source.

Sources

Facts about StackAI come from its own pages, read on 16 October 2026. Something out of date? Write to hello@alfera.ai and we will fix it.