Alternatives
Best Sim Alternatives in 2026
Sim is an open-source workspace for building, deploying and managing AI agents. Workflows are designed visually or in code, given memory through a knowledge base, backed by structured tables and a shared file store, and every agent decision lands in an execution log. The detail that decides most purchases is not on the feature list, it is the license: the repository is Apache-2.0, which permits commercial use, modification and redistribution. The hosted product is credit-metered, with a free forever plan, Pro at $25 per user per month billed monthly and Max at $100 per user per month billed monthly. People still shop around, and usually for three specific reasons: credits meter every tier including the paid ones, supported self-hosting is an Enterprise line item, and the seat price scales with headcount.
Why look for Sim alternatives?
Start with what is genuinely good, because for a lot of readers the answer is to stay put.
- → The repository is licensed Apache-2.0, so commercial use, modification and redistribution are permitted without a separate agreement
- → The free plan is billed as free forever: 1,000 one-time credits, 1 workspace, 5 GB of file storage, 30-day log retention
- → The same workflow can be built on the visual canvas or in code, and the README documents a Docker Compose install
- → The repository advertises 1,000 or more integrations and every major LLM, with knowledge base, tables, file storage and tracing in one product
And the reasons people still leave, all of them from the live pricing table.
- → Credits meter every tier, paid ones included. Free is 1,000 one-time credits with no weekly refresh; Pro is 6,000 a month plus a 2,000 weekly refresh; Max is 25,000 a month plus 4,000 a week
- → Both paid tiers are per seat. Pro is $25 per user per month and Max $100 per user per month, both billed monthly, so a team of five on Max is $500 a month before anyone runs out of credits. Annual billing takes 15% off
- → The pricing table marks Self Hosting, SSO, SOC 2 Compliance and Access Control as Enterprise features, quoted on request, even though the Apache-2.0 repository documents a self-hosted install with no such gate
- → Workspace and concurrency caps sit low down: 1 workspace and 10 concurrent executions on Free, 3 and 50 on Pro
- → The ecosystem is younger than the incumbents here, which is the practical cost of the licensing win when you need a connector nobody has built yet
n8n
Best for self-hosted automation with the largest community
Lindy
Best for ops teams where non-developers own the agents
Make
Best for paying by run volume instead of by seat
LangChain
Best for keeping the agent inside your own codebase
Flowith
Best for multi-modal creative production on a canvas
How they compare to Sim
All five score higher than Sim does, but they win on different axes and two of them are not buying you the same thing. Skim the highlights or click through for the full review.
n8n · 4.5/5
Best for self-hosted automation with the largest community.
n8n is the tool Sim gets weighed against most often, and the honest comparison is about the license rather than the canvas. n8n's source is distributed under the Sustainable Use License, Version 1.0, which states that “You may use or modify the software only for your own internal business purposes or for non-commercial or personal use” and that “You may distribute the software or provide it to others only if you do so free of charge for non-commercial purposes”. Sim's Apache-2.0 grant carries no equivalent condition. If you are automating your own company's work, that clause is not in your way, and n8n gives you a much larger community, an AI Agent node that runs against OpenAI, Anthropic and local models through Ollama, plus JavaScript and Python code nodes. If you intend to host the platform for customers as part of a product you sell, read both licenses directly first. n8n Cloud is priced in euros on n8n.io/pricing: Starter at 20 EUR a month billed annually for 2,500 workflow executions, Pro at 50 EUR a month billed annually for 10,000, Business at 667 EUR a month billed annually for 40,000 on self-hosted deployment, and Enterprise on request. The community edition on GitHub is free to run on your own infrastructure. If that license clause does not touch your use case, n8n is the stronger platform today and it is the one to pick. The billing shape differs too: Sim charges per seat, n8n Cloud by execution volume, so headcount moves one bill and run volume the other.
Lindy · 4.5/5
Best for ops teams where non-developers own the agents.
Lindy builds agents for email triage, sales follow-up, meeting prep and support routing across more than 1,000 integrations, with a drag-and-drop builder, memory that persists between runs, event triggers and approval steps so a human signs off before an agent commits anything. Against Sim it trades the licensing conversation away entirely: Lindy sells hosted seats, and its pricing page lists four plans with nothing on it about running the platform yourself. What you get back is the most approachable builder in this category. Pricing is Plus at $29.99 per user per month with 3,000 credits per user per month, Pro at $99.99 per user per month with 15,000 credits, Max at $199.99 per user per month with 35,000 credits, and Enterprise on request for HIPAA and BAA coverage, audit logs and dedicated support. The pricing page shows no free tier; Lindy states that “New teammates who join through Slack get their first week free”, and its call to action offers a 7-day free trial. Set against Sim's $25 Pro seat, the $29.99 Plus seat is close enough that price is not the deciding factor, so decide on who will build. Its ToolChase review notes that complexity ramps quickly once flows branch and that costs scale with task volume.
Make · 4.5/5
Best for paying by run volume instead of by seat.
Make connects more than 3,000 standard apps through a visual scenario builder with routers, filters, iterators, aggregators, error handling and AI modules, and it prices in the way that is the biggest structural difference from Sim. Each module action counts as one credit, and what you buy is a credit bucket rather than a seat: the plan cards quote the price for 10,000 credits a month, not a price per user. Free is $0 a month with up to 1,000 credits a month, 2 active scenarios and a 15-minute minimum interval between scheduled runs. Core is $9 a month billed annually, or $10.59 a month billed monthly, for 10,000 credits a month and unlimited active scenarios. Pro is $16 a month billed annually, $18.82 billed monthly. Teams is $29 a month billed annually, $34.12 billed monthly. Enterprise is quoted. Make is a hosted service, so the licensing argument that brings people to Sim does not apply here at all, and that is the trade you are making. Pick Make when the work is ordinary connective tissue between SaaS apps and the constraint is cost per run. Its ToolChase review flags a steeper learning curve than Zapier and complex scenarios that get hard to organize visually at scale.
LangChain · 4.5/5
Best for keeping the agent inside your own codebase.
LangChain is the entry that does a different job, and it is on the list because a good share of people shopping for a Sim alternative are really asking whether they need a workspace at all. It is a framework, not a product you log into: prompt templates, chains, agents, retrieval-augmented generation, vector stores and tool use, in Python and JavaScript, with LangGraph layered on for stateful, multi-actor agents. Its ToolChase review records 600 or more integrations. On licensing the two are close cousins, because the LangChain repository is MIT, which like Apache-2.0 permits commercial use and redistribution. The difference is what you get for it: Sim hands you a running platform, while LangChain hands you libraries and you assemble the platform yourself. The paid piece is LangSmith, for observability, evaluation and production tracing. Its Developer tier is $0 per seat per month with up to 5,000 base traces a month and a single seat, then pay-as-you-go; Plus is $39 per seat per month with up to 10,000 base traces a month, then pay-as-you-go, and adds unlimited seats; Enterprise is custom and adds self-hosted and hybrid deployment, custom SSO, ABAC and RBAC, and a support SLA. Usage past the included traces bills in LangChain Compute Units at $1.50 each and LangChain Storage Units at $1.00 each. Choose LangChain when engineers own the agent and you want version control, tests and deployment to be ordinary code. Its review notes abstractions heavier than rolling your own and uneven documentation across modules.
Flowith · 4.7/5
Best for multi-modal creative production on a canvas.
Flowith scores 4.7/5, the highest on this page, and it sits furthest from Sim in intent. It swaps the workflow graph for an infinite canvas where AI nodes for text, image, video, slides and whole websites connect output to input, backed by a Knowledge Garden context layer that works like personal retrieval-augmented generation and Agent Neo for long-running autonomous jobs. Its ToolChase review records that Flowith reported more than a million users as of May 2026, and the product ships native macOS and iOS apps alongside the web canvas. Pricing is credit-based and flat rather than per seat, which is worth noticing if headcount is what makes Sim expensive for you: a free tier carries a one-time 300-credit allowance, Pro lists at $19.90 a month for 20,000 credits a month, Ultimate at $49.90 a month for 50,000, and Infinite at $499.90 a month for 500,000. A promotional discount was running on those list prices when we checked on 28 September 2026, alongside a $9.99 seven-day Ultimate trial that then renews at $49.90 a month, so read the card before you subscribe. There is no licensing story here; this is a hosted creative tool. Pick Flowith when the output is campaign work, decks and landing pages rather than a business process. Its review warns that tiers and limits change frequently and that the canvas is overhead for single-modality work.
Which one to pick
- → n8n if you self-host for your own business. It is the better platform today, and the Sustainable Use License only becomes a problem if you resell hosting
- → Lindy if the people who will build and own the agents are not engineers
- → Make if you want the bill to track runs rather than headcount, and the workload is SaaS-to-SaaS plumbing
- → LangChain if the agent belongs in your repository, under version control, with LangSmith bought separately for tracing
- → Flowith if the job is multi-modal creative production and you would rather pay a flat monthly price than a per-seat one
- → Stay on Sim if you intend to ship a self-hosted agent platform inside something you sell. Apache-2.0 is the reason to be here, and the free forever plan costs nothing while you test whether the rest of the product holds up
Other Sim alternatives worth knowing
Well-known options that don't yet have a full ToolChase review, so we give no score and no pricing for them here.
Activepieces ↗
Activepieces describes itself as “an open source replacement for Zapier” and is built to be self-hosted and network-gapped. Its community edition is released under the MIT license, with enterprise features under a separate commercial license.
Dify ↗
Dify is a collaborative workspace for agentic workflows and RAG pipelines that runs on cloud, in a VPC or self-hosted through Docker. Read its terms if licensing is why you are shopping: the repository is under the Dify Open Source License, which its README describes as based on Apache 2.0 with additional conditions.
Windmill ↗
Windmill turns scripts into webhooks, workflows and internal UIs for developers who want the whole thing on their own infrastructure. It is dual licensed: AGPLv3 for the open-source build compiled without the enterprise flag, with separate proprietary terms covering the Community Edition binary.