
Massive prebuilt app ecosystem and polished UX, but significantly more expensive and proprietary.
Massive prebuilt app ecosystem and polished UX, but significantly more expensive and proprietary.
Activepieces: An open-source AI automation platform combining conversational workflow drafting, visual flow builders, and prebuilt app connectors. Activepieces records 258,553 monthly visits with +1.5% month-over-month growth and Freemium pricing. Mastra records 318,954 monthly visits with -5% growth and Freemium, Contact for Pricing pricing.
Open-source AI automation that unifies agents, flows and 770+ app integrations
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | activepieces.com | mastra.ai |
| Pricing Model | Freemium | Freemium, Contact for Pricing |
| Monthly Visits | 258.55K (258,553) | 318.95K (318,954) |
| MoM Traffic Delta | +3.87K (+1.5%) | -16.74K (-5%) |
| Primary Market & Share | 🇺🇸 United States (14.1%) | 🇺🇸 United States (21.3%) |
| Direct Visits / mo | 111.33K | 139.22K |
| User Rating | 4.6 | 4.6 |
| Supported Platforms | Website | Website |
Open-source AI automation that unifies agents, flows and 770+ app integrations
Describe a task in everyday words and the agent determines the steps, chooses tools from your connected apps and MCP servers, and pauses for approval on sensitive actions.
Build automations on a canvas with branching, retries, waitpoints, subflows and error handling, then write inline TypeScript for the steps that need real code.
Every piece is MIT-licensed and community-built, covering the apps you already run, with an HTTP piece for any REST or GraphQL endpoint with auth and pagination handled.
Draft flows by chatting, store structured data in Tables that flows and agents can read and write, and keep internal documents searchable by every agent.

The TypeScript framework for building, deploying, and observing AI agents
Define agents with instructions, models, tools, and runtime behavior, then compose typed workflow steps with retries and branching in TypeScript.
Give agents long-lived context with observational memory, semantic recall, and thread-aware storage.
Traces, metrics, logs, and datasets show every model call, tool call, and handoff in a searchable timeline.
Score agent runs against repeatable checks and experiments before changes reach production.

Massive prebuilt app ecosystem and polished UX, but significantly more expensive and proprietary.
Massive prebuilt app ecosystem and polished UX, but significantly more expensive and proprietary.
SpecialistA robust workflow automation platform uniting visual node-based building with AI agent orchestration and extensive app connectors.
SpecialistA robust workflow automation platform uniting visual node-based building with AI agent orchestration and extensive app connectors.

SpecialistA developer platform providing pre-built integrations, authentication, and execution tools specifically for AI agents across third-party apps.
SpecialistA developer platform providing pre-built integrations, authentication, and execution tools specifically for AI agents across third-party apps.
SpecialistStreamlined interface for deploying custom AI agents, but less flexible for traditional data integration pipelines.
SpecialistStreamlined interface for deploying custom AI agents, but less flexible for traditional data integration pipelines.

Free / Open-sourceA comprehensive visual platform for building agent workflows and RAG pipelines via a no-code canvas instead of TypeScript.
Free / Open-sourceA comprehensive visual platform for building agent workflows and RAG pipelines via a no-code canvas instead of TypeScript.
Excellent browser and web scraping automation features for AI agents, but fewer standard enterprise app integrations.
Excellent browser and web scraping automation features for AI agents, but fewer standard enterprise app integrations.

Enterprise-grade security and governance for workflows, but geared more toward security and IT operations.
Enterprise-grade security and governance for workflows, but geared more toward security and IT operations.

Advanced multi-agent workforce builder for complex tasks, but less suited for traditional webhook integrations.
Advanced multi-agent workforce builder for complex tasks, but less suited for traditional webhook integrations.

SpecialistSpecializes in building conversational chatbots and agentic pipelines visually, but lacks broad traditional connector depth.
SpecialistSpecializes in building conversational chatbots and agentic pipelines visually, but lacks broad traditional connector depth.

SpecialistStrong multi-channel publishing capabilities for AI agents, but less comprehensive for multi-step backend data pipelines.

SpecialistAn open-source AI workspace combining visual workflows and code for building and governing agent systems.

Free / Open-sourceA popular Python-based agent framework offering modular building blocks, tailored for Python developers rather than TypeScript.