ActivepiecesAI Workflow Automation
Freemium
MIT-licensed open-source automation with per-flow pricing instead of per-task, plus AI agents, MCP support and free unlimited self-hosting.
Visit Website →Relay.app
FreemiumHuman-in-the-loop automation where approvals, reviews and AI steps sit inside the workflow, with every integration included on every plan.
What is Relay.app?
Relay.app is a workflow automation platform built around a premise most competitors treat as an afterthought: some steps should not run without a human saying yes. Approval checkpoints, review gates and sign-off steps are first-class citizens in Relay, so you can automate the tedious 90 percent of a process while keeping judgement calls with a person. A workflow can draft a customer refund, pause for a manager to approve it in Slack, then execute the refund and log it, all in one visual flow. Relay meters usage on two axes, steps and AI credits, where a step is any completed action and AI credits fund model calls, scraping and generation. Notably, every integration is available on every plan including the free tier, so you never hit a connector paywall. Relay's AI chat builder lets you describe a workflow in plain language and get a working visual flow back, complete with proactive error detection. It suits teams automating processes with real consequences where a fully autonomous run would be risky.
Key Features
Human-in-the-Loop StepsApproval WorkflowsAI Chat BuilderVisual Workflow EditorAll Integrations IncludedAI AgentsMulti-Step WorkflowsConditional PathsWeb ScrapingAI Content GenerationShared App ConnectionsTeam WorkspacesWebhooksError DetectionData EnrichmentSlack ApprovalsWorkflow TemplatesSOC 2 Compliance
Integrations
Communication
SlackGmail
CRM
HubSpotSalesforce
Writing & Docs
Notion
Database
Airtable
Data & Spreadsheets
Google Sheets
E-commerce
Stripe
Project Management
Linear
Other
OpenAIAnthropic
Webhooks & API
Webhooks
How to Use Relay.app
1Create a free Relay.app account
2Describe the workflow in the AI chat builder or start from a template
3Pick a trigger and connect your apps
4Add action steps on the visual canvas
5Insert a human approval step where judgement is needed
6Test the workflow end to end
7Publish and monitor step and credit usage
✅ Best For
- Operations and finance teams automating processes with real consequences, such as refunds, discounts or contract sends, where a human must approve before execution
- Customer support leads who want AI to draft replies at scale while a person reviews tone and accuracy before anything reaches a customer
- Small teams that want every integration unlocked from day one instead of discovering their key connector is behind a premium tier
- Managers introducing automation into a risk-averse organisation, where visible approval gates are what make adoption politically possible
❌ Not For
- High-volume automation users, since step limits are modest compared to competitors and heavy workloads outgrow the plans quickly
- Teams needing the broadest connector library, because Relay covers roughly 100+ integrations versus thousands elsewhere
- Anyone running credit-heavy AI workloads like image or video generation, which consume credits at a rate that makes budgeting difficult
- Developers who want self-hosting, source access or deep custom code execution inside workflow steps
Reviews
No reviews yet. Be the first to review Relay.app!
Pricing
Free$0
- ✓200 steps/month
- ✓500 AI credits
- ✓1 user
- ✓all integrations unlocked
Professional$19/mo
- ✓750 steps/month
- ✓5
- ✓000 AI credits
- ✓1 user
- ✓all features
Team$59/mo
- ✓2
- ✓000 steps/month
- ✓up to 10 users
- ✓shared workflows and app connections
EnterpriseCustom
- ✓Custom usage limits
- ✓custom integrations
- ✓automation consulting
- ✓dedicated Slack channel
Prompts to Try
Build a workflow that drafts a refund email, pauses for manager approval in Slack, then issues the Stripe refund
Create a workflow where AI writes a first-draft reply to support tickets and a human approves before sending
Set up a hiring workflow that screens applications with AI then routes shortlists for human review
Design an approval flow for discount requests over 15 percent
Use Cases
Ines heads finance ops at a 60-person SaaS company. Her Relay workflow drafts every refund over $200, pings her in Slack for one-click approval, then executes it in Stripe, cutting refund turnaround from four days to under an hour with zero unauthorised payouts.
Bram runs customer support at an online marketplace. AI drafts replies to routine tickets and his agents approve or edit them in Relay, letting a team of three handle the ticket volume that previously needed five.
Chidi manages content at a B2B agency. His workflow generates draft LinkedIn posts from published blog articles and holds them for the client's sign-off, which ended the endless email threads about approving copy.
Yuki oversees vendor onboarding at a manufacturing firm and built a Relay flow where AI extracts details from supplier documents, a compliance officer approves, then records are created in their ERP, shrinking onboarding from three weeks to five days.
Paulo runs a small recruiting firm and uses Relay to screen inbound applications with AI, surface a ranked shortlist and wait for his approval before any candidate receives an interview invitation, so he reviews 200 applicants a week in one sitting.
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