Open source Zapier alternatives, and when a flow is not enough
Activepieces is an open-source Zapier replacement: you describe a flow and it runs the steps. Kortix is the open-source AI Operating System for the work that needs a decision, where agents run on their own cloud computers and land finished work for review.
Kortix, Activepieces and n8n side by side
What each tool is built to do, and what a unit of work is called.
Zapier, and what replaces it
Zapier connects two apps with a trigger and a list of steps. Activepieces is an open-source replacement for it: its own repository describes it as "an open source replacement for Zapier", with flows, agents and tables built in a browser and 280+ pieces also usable as MCP servers. When the job is a fixed sequence in a fixed order, a flow tool is the right shape.
n8n draws the same trigger-and-steps automations on a visual canvas and adds code steps, billed by execution rather than by step. It is a strong choice when you want to see the diagram of the work.
When the job needs a decision
Some work is not a sequence. Triage a day of tickets, reproduce the worst bug, reconcile a ledger: the steps are not known when you start, and the result is a document, a patch or a reply. That is what Kortix, the open-source AI Operating System, is for. Each session runs one agent on its own cloud computer and branch, the agent reaches your apps through its connectors, does the work, and opens a change request a person merges.
When a flow tool is right, and when a workforce is
Pick a flow tool when the same steps run in the same order every time and a person can draw the diagram up front. Pick Kortix when the work needs context, a decision and a finished artifact under review: your agents, skills, company memory, and connectors live in one git repo you own, and work lands through a change request a person approves. The Kortix blog covers the workflow-builder comparison at more length.
A trigger that starts a session
triggers: - slug: daily-digest type: cron cron: '0 0 9 * * 1-5' prompt: Summarize yesterday's support tickets and open a change request.From the Kortix README; the agent runs on a schedule and opens a change request.
Common questions
Where a flow builder stops and an operating system starts.
Can I import my existing Zapier workflows?
Activepieces is built as a Zapier replacement, so a flow maps onto its trigger-and-steps model. A Zap that only moves data stays a flow; work that needs judgment is where Kortix differs.
Does n8n replace Zapier too?
n8n builds the same trigger-and-steps automations on a visual canvas and adds code steps, billed by execution rather than by task.
How is Kortix different from a single-purpose tool?
Your agents, skills, company memory, and connectors live in one git repo you own, and each session runs on its own cloud computer instead of inside one vendor's product.
Replace the flow with a workforce when the work needs a decision
Kortix is the open-source AI Operating System: Free is $0 with 200 credits per month and 1 project.
Open source · Any model, your keys · Self-host, VPC, or on-prem