AI Tool Comparison
A side-by-side breakdown to help you pick the right tool for your workflow.
Review Score assesses product quality; Fit Score is specific to a use case. Limited reviews do not establish overall product quality. How reviews work.
Build an unlimited number of AI workflows and MCP-connected automations metered by daily and monthly credits rather than per-task fees, self-hostable under an MIT license for full data control and unmetered runs.
Was a workflow automation platform built around human-in-the-loop approval steps. Relay.app shut down on September 14, 2026 (free accounts ended Aug 15, 2026); it is listed for historical reference only. Use Zapier or Make for approval-gated automation.
Catalog updated: August 2026
Relay.app is no longer an active product (discontinued: Relay.app shut down September 14, 2026 (free accounts ended Aug 15, 2026; paid accounts closed at 23:59 PT on Sep 14, 2026). No signups.), which settles this comparison in Activepieces's favor before you weigh anything else below. Activepieces and Relay.app both compete in Automation, overlapping most directly on automation.
Choose Activepieces if…
Best for teams that want Zapier-style automation but need to keep sensitive data on their own infrastructure, and its edge is fully self-hostable and open-source, so workflow data never has to touch an external server. A genuine privacy-first alternative to Zapier, the app integration library is still noticeably smaller. Lean toward Relay.app instead if was known for building structured human decision points directly into automations, before announcing its shutdown matters more for your use case.
Choose Relay.app if…
Best for historical reference only, this service is shutting down, and its edge is was known for building structured human decision points directly into automations, before announcing its shutdown. Shut down September 14, 2026. Use Zapier or Make for human-in-the-loop automation instead. Lean toward Activepieces instead if fully self-hostable and open-source, so workflow data never has to touch an external server matters more for your use case.
| Attribute | Activepieces | Relay.app |
|---|---|---|
| Category | Automation | Automation |
| Pricing | freemium | freemium |
| Pricing Detail | Free (100 credits/day, unlimited flows; self-host free) / $16/mo Plus (10K credits/mo, billed annually) / $166/mo Team (50K credits/mo, billed annually) / overage $0.007/credit | Discontinued: Relay.app shut down September 14, 2026 (free accounts ended Aug 15, 2026; paid accounts closed at 23:59 PT on Sep 14, 2026). No signups. |
| TWF Review Score | Not yet reviewed | Not yet reviewed |