head to head · open source
AnythingLLM vs sim
AnythingLLM has 67,836 GitHub stars, 7,652 forks, 311 open issues and last shipped 4 days ago. sim has 29,963 stars, 3,878 forks, 336 open issues and last shipped yesterday. AnythingLLM leads on adoption by 126% (67,836 vs 29,963 stars). AnythingLLM is written in JavaScript under MIT; sim is written in TypeScript under Apache-2.0. AnythingLLM has attracted 11% as many forks as stars, sim 13%. sim was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (agentic-workflow), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| AnythingLLM | sim | |
|---|---|---|
| GitHub stars | ★ 68K | ★ 30K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | TypeScript |
| Last push | 2026-10-30 | 2026-11-02 |
| Forks | ⑂ 7.7K | ⑂ 3.9K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick AnythingLLM if
- You weight community size — 68K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick sim if
- You want the sim feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and sim fits your workflow better
About AnythingLLM
[!NOTE] We are also working on Open Computer which gives an entire computer environment for AI Agents to use. This will bring AnythingLLM's agent capabilities to a new level and a novel UX paradigm for AI Agent use. ⭐ Star the repo to stay updated! AnythingLLM: The all in one AI app you were looking for. Chat with your docs, use AI Agents, hyper configurable, multi user, & no frustrating setup required. Docs Hosted Instance English · 简体中文 · 日本語 👉 AnythingLLM for desktop (Mac, Windows, & Linux)! Download Now Chat with your docs. Automate complex workflows with AI Agents. Hyper configurable, multi user ready…
read the full AnythingLLM overview →
About sim
A workspace to build, deploy and manage AI agents and workflows. Quickstart Cloud hosted: sim.ai Self hosted Open Desktop: macOS macOS 12+, Apple Silicon and Intel. See the desktop docs to point it at a self hosted deployment. Capabilities Connect 1,000+ integrations and every major LLM Add Slack, Notion, HubSpot, Salesforce, databases, and more Build agents visually, conversationally, or with code Ingest files, knowledge bases, and structured table data Monitor runs, logs, schedules, and workflow activity One workspace, every surface Chat and workflows are just the start — tables, files, and knowledge all live…
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Frequently asked questions
Is AnythingLLM or sim more popular?
AnythingLLM has 67,836 GitHub stars and sim has 29,963. AnythingLLM has the larger community by that measure.
Are AnythingLLM and sim free?
Both are open source. AnythingLLM is licensed under MIT and sim under Apache-2.0. Neither carries a licence fee.
What is the difference between AnythingLLM and sim?
AnythingLLM is written in JavaScript and sim in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, AnythingLLM or sim?
Choose AnythingLLM if you want the larger community (67,836 stars) or its MIT licence terms. Choose sim if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.