Free / Open-sourceUnified observability, security and incident response for cloud-scale engineering teams

Fiddler AI records 44,204 monthly visits with -10.2% month-over-month growth and Contact for Pricing pricing. n8n records 4,522,449 monthly visits with -7.4% growth and Freemium pricing.

The control plane for trusted enterprise agents and models
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | fiddler.ai | n8n.io |
| Pricing Model | Contact for Pricing | Freemium |
| Monthly Visits | 44.2K (44,204) | 4.52M (4,522,449) |
| MoM Traffic Delta | -5.04K (-10.2%) |
| -361.7K (-7.4%) |
| Primary Market & Share | 🇺🇸 United States (28.4%) | 🇮🇳 India (13.2%) |
|---|
| Direct Visits / mo | 9.13K | 1.57M |
|---|
| User Rating | 4.4 | 4.7 |
|---|
| Supported Platforms | Website | Website |
|---|

The control plane for trusted enterprise agents and models
See the performance of every agent and predictive model in a single pane of glass, with every action, token and dollar traceable by user and team.
Fiddler Centor Models power policy enforcement and continuous evaluation inside your network, avoiding external LLM API calls and their hidden costs.
Detects and redacts PII, PHI and secrets on the same request path — before a prompt reaches the model and before a response reaches the developer — with sub-80ms latency.
Keeps a living inventory of every connected agent and records each enforcement decision, with who triggered it and what happened, ready for GRC and AI regulation audits.
Open-source workflow automation built for AI agents and technical teams
Build automations with a visual node editor, then insert JavaScript or Python code nodes when you need custom logic.
Connect to 500+ native services, any REST API via HTTP nodes, and any agent or coding assistant through MCP.
Run agents alongside regular steps, inspect every decision, and add structured inputs, guardrails and human approval steps.
Watch workflows execute live, open past runs, replay a run with mocked data and re-run just the step that failed.
Free / Open-sourceUnified observability, security and incident response for cloud-scale engineering teams


Unmatched ecosystem of app connectors and reliability, but significantly more expensive and lacks n8n's self-hosting freedom.
#2No-code builder for custom AI agents and workflows

Free / Open-sourceOutstanding open-source visual canvas for RAG pipelines and LLM agents, but less suited for general API integrations.


SpecialistMultiplayer AI where people and agents work side by side
Turn one prompt into live business apps, AI agents and automated workflows
Powerful visual builder specifically tailored for complex AI agent workflows, but less mature for traditional enterprise automation.

SpecialistDeveloper-first integration platform with granular code control, but lacks n8n's visual node-based workflow builder.

Enterprise-grade security and robust workflow automation, but less focused on open-source self-hosting and consumer use cases.
Free / Open-sourceAn open-source no-code automation tool with a clean interface, but fewer native app integrations than n8n.

Free / Open-sourceAgent observability, evaluation, and continuous improvement for production AI

No-code AI agents and agent teams for real business workflows
Free / Open-sourceUnified observability, security and incident response for cloud-scale engineering teams
Unmatched ecosystem of app connectors and reliability, but significantly more expensive and lacks n8n's self-hosting freedom.
No-code builder for custom AI agents and workflows
Free / Open-sourceOutstanding open-source visual canvas for RAG pipelines and LLM agents, but less suited for general API integrations.
SpecialistMultiplayer AI where people and agents work side by side
Powerful visual builder specifically tailored for complex AI agent workflows, but less mature for traditional enterprise automation.
Enterprise-grade security and robust workflow automation, but less focused on open-source self-hosting and consumer use cases.
Free / Open-sourceAn open-source no-code automation tool with a clean interface, but fewer native app integrations than n8n.
Free / Open-sourceAgent observability, evaluation, and continuous improvement for production AI
No-code AI agents and agent teams for real business workflows