Comparison
langflow vs sim
Verdict
Pick langflow if langflow is a Python-based tool for building and deploying AI workflows using large language models and agent systems; pick sim if sim, a platform for orchestrating AI agents with TypeScript support and local model capabilities via frameworks like Next.js and React.
Markdown twin · langflow alternatives · sim alternatives
GraphCanon updated 2d
Trust & integrity
| Signal | langflow | sim |
|---|---|---|
| Maintenance | Very active (0d since push) As of 2w · github_public_v1 | Very active (0d since push) As of 2d · github_public_v1 |
| Provenance | Not a fork · Organization account As of 2w · github_public_v1 | Not a fork · Organization account As of 2d · github_public_v1 |
| OSV dependency advisories | No published findings from this source as of 2026-07-11 As of 1mo · osv@v1 | No lockfile (source not queried) As of 1mo · osv@v1 |
| deps.dev advisories | Not queried deps.dev@v1 | Not queried deps.dev@v1 |
| OpenSSF Scorecard | Not queried openssf-scorecard@v1 | Not queried openssf-scorecard@v1 |
Tagline
- langflow
- Tool for building and deploying AI-powered agents and workflows
- sim
- Build, deploy, and orchestrate AI agents.
Stars
- langflow
- 153k
- sim
- 29k
Forks
- langflow
- 9.7k
- sim
- 3.8k
Open issues
- langflow
- 972
- sim
- 277
Language
- langflow
- Python
- sim
- TypeScript
Adopt for
- langflow
- Langflow is a Python-based tool for building and deploying AI workflows using large language models and agent systems.
- sim
- Sim, a platform for orchestrating AI agents with TypeScript support and local model capabilities via frameworks like Next.js and React.
Persona
- langflow
- -
- sim
- -
Runtime
- langflow
- -
- sim
- -
License
- langflow
- MIT
- sim
- Licensed under Apache License 2.0, allowing for free usage, modification, and distribution with proper attribution.
Last pushed
- langflow
- Aug 2, 2026
- sim
- Aug 18, 2026
Categories
- langflow
- AI Agents, Model Training
- sim
- AI Agents, Developer Tools
Trust and health
Open issues (now)
- langflow
- 972
- sim
- 277
Stars delta
- langflow
- Unknown
- sim
- +286 (30d)
Open issues delta
- langflow
- Unknown
- sim
- +41 (30d)
OSV dependency advisories
- langflow
- No published findings from this source as of 2026-07-11
- sim
- No lockfile (source not queried)
Full report
- langflow
- Trust report
- sim
- Trust report
Typed relationship
langflow alternative simBoth Sim and Langflow are tools designed for building and deploying AI agents, making them alternatives to each other.
Choose langflow if…
- langflow is primarily Python; sim is TypeScript.
- License: langflow is MIT, sim is Apache-2.0.
- Pricing: Open-source under MIT license with community and commercial options available; the OSS version is free to use at your own risk..
- Requirements: Min 4 GB RAM; Requires Docker; Requires Python 3.10–3.14, the recommended uv package manager is beneficial but not explicitly required for installation.; Docker can be used to start a Langflow container with default settings..
- Both Sim and Langflow are tools designed for building and deploying AI agents, making them alternatives to each other.
- Tags unique to langflow: agents, chatgpt, generative-ai, large language models.
- Also covers Model Training.
- Use Langflow if you are working with Python versions from 3.10 to 3.14, as these versions are specifically supported for seamless operation of the tool.
When NOT to use langflow
- Do not use Langflow if your Python environment does not align with version constraints between 3.10 and 3.14.
- Langflow may not be the best fit if you are seeking a platform that operates without any language model integration, as it fundamentally relies on such models for its functionality.
Choose sim if…
- sim is primarily TypeScript; langflow is Python.
- License: sim is Apache-2.0, langflow is MIT.
- Requirements: Min 4 GB RAM; Requires Docker.
- Both Sim and Langflow are tools designed for building and deploying AI agents, making them alternatives to each other.
- Tags unique to sim: agent-workflow, aiagents, automation, low-code.
- Also covers Developer Tools.
- When you need to build low-code/no-code applications using TypeScript and want integration with popular web frameworks such as Next.js and React.
When NOT to use sim
- For projects that do not require low-code/no-code capabilities or when TypeScript is not preferred as a development language.
- Projects may avoid Sim if they have strict requirements for cloud-based models only, and the use of local models via Ollama or vLLM is unnecessary.
Explore
Sources
Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.
- GitHub stars (langflow-ai/langflow) · observed Aug 2, 2026
- GitHub forks (langflow-ai/langflow) · observed Aug 2, 2026
- Last push (langflow-ai/langflow) · observed Aug 2, 2026
- License file (MIT) · observed Aug 2, 2026
- Decision facts (enrichment) · observed Jul 17, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
- GitHub stars (simstudioai/sim) · observed Aug 18, 2026
- GitHub forks (simstudioai/sim) · observed Aug 18, 2026
- Last push (simstudioai/sim) · observed Aug 18, 2026
- License file (Apache-2.0) · observed Aug 18, 2026
- Decision facts (enrichment) · observed Jul 11, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
GitHub stars on cards: langflow 153k · sim 29k (synced Aug 2, 2026).
Common questions
- What is the difference between langflow and sim?
- langflow: Tool for building and deploying AI-powered agents and workflows. sim: Build, deploy, and orchestrate AI agents.. See the comparison table for live GitHub stats and shared categories.
- When should I choose langflow over sim?
- Choose langflow over sim when langflow is primarily Python; sim is TypeScript; License: langflow is MIT, sim is Apache-2.0; Pricing: Open-source under MIT license with community and commercial options available; the OSS version is free to use at your own risk.; Requirements: Min 4 GB RAM; Requires Docker; Requires Python 3.10–3.14, the recommended uv package manager is beneficial but not explicitly required for installation.; Docker can be used to start a Langflow container with default settings.; Both Sim and Langflow are tools designed for building and deploying AI agents, making them alternatives to each other; Tags unique to langflow: agents, chatgpt, generative-ai, large language models; Also covers Model Training; Use Langflow if you are working with Python versions from 3.10 to 3.14, as these versions are specifically supported for seamless operation of the tool.
- When should I choose sim over langflow?
- Choose sim over langflow when sim is primarily TypeScript; langflow is Python; License: sim is Apache-2.0, langflow is MIT; Requirements: Min 4 GB RAM; Requires Docker; Both Sim and Langflow are tools designed for building and deploying AI agents, making them alternatives to each other; Tags unique to sim: agent-workflow, aiagents, automation, low-code; Also covers Developer Tools; When you need to build low-code/no-code applications using TypeScript and want integration with popular web frameworks such as Next.js and React.
- When should I avoid langflow?
- Do not use Langflow if your Python environment does not align with version constraints between 3.10 and 3.14. Langflow may not be the best fit if you are seeking a platform that operates without any language model integration, as it fundamentally relies on such models for its functionality.
- When should I avoid sim?
- For projects that do not require low-code/no-code capabilities or when TypeScript is not preferred as a development language. Projects may avoid Sim if they have strict requirements for cloud-based models only, and the use of local models via Ollama or vLLM is unnecessary.
- Is langflow or sim more popular on GitHub?
- langflow has more GitHub stars (152,744 vs 29,424). Stars measure visibility, not whether either tool fits your constraints.
- Are langflow and sim open source?
- Yes - both are open-source projects on GitHub (langflow: MIT, sim: Apache-2.0).
- Where can I find alternatives to langflow or sim?
- GraphCanon lists graph-backed alternatives at langflow alternatives and sim alternatives (langflow markdown twin, sim markdown twin), ranked by typed relationship edges rather than popularity votes.
- Is there a machine-readable version of this comparison?
- Yes. The markdown twin at this comparison mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers.
- Which is better maintained, langflow or sim?
- langflow: Very active. sim: Very active. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance.
- Where are the full trust reports for langflow and sim?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: langflow trust report; sim trust report.