Software Alternatives, Accelerators & Startups

Physion VS Emisar.dev

Compare Physion VS Emisar.dev and see what are their differences

Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Physion logo Physion

Physics Simulation Sandbox

Emisar.dev logo Emisar.dev

One governed MCP server connects any AI agent to a finite action catalog, enforced on-host with pack trust, policy gates, human approvals, and a hash-chained audit trail.
  • Physion Landing page
    Landing page //
    2022-06-16

Physion is a web application which allows you to design and simulate physics experiments. You can think of it as a "CAD-like" application combined with a 2D physics simulator where the objects you design can be instantly simulated. Physion provides a rich set of tools with which you can design physics experiments for educational or fun purposes.

  • Emisar.dev Approvals
    Approvals //
    2026-07-21
  • Emisar.dev Audit Log
    Audit Log //
    2026-07-21
  • Emisar.dev Policies
    Policies //
    2026-07-21
  • Emisar.dev Runner fleet
    Runner fleet //
    2026-07-21

Emisar is the last MCP server youโ€™ll need to install: a Zero-Trust gateway connecting Claude, Cursor, ChatGPT, and any AI agent to your infrastructure. One server handles production access, debugging, alerts, and internal operations, with new capabilities added as packs. Agents can inspect real production state, debug what they shipped, and help resolve incidents. Safe reads run automatically; policy allows, blocks, or routes risky actions for approval. No SSH keys, VPNs, remote shells, or standing shell access โ€” and every call is recorded.

Physion

Pricing URL
-
$ Details
-
Platforms
Web
Release Date
2022 June

Emisar.dev

Website
emisar.dev
$ Details
freemium $20.0 / Monthly (per runner)
Platforms
-
Release Date
-
Startup details
Country
United States
State
CA
Founder(s)
Andrew Dryga
Employees
1 - 9

Physion features and specs

  • User-Friendly Interface
    Physion offers a straightforward and intuitive user interface that makes it accessible for people of all ages and experience levels to create and simulate 2D physics scenarios.
  • Educational Tool
    Physion is an excellent educational tool for teaching and learning fundamental physics concepts through hands-on simulation and experimentation.
  • Versatile Simulation Capabilities
    The software provides a range of tools and elements that allow users to simulate various physics phenomena, such as collisions, gravity, and friction.
  • Interactive Features
    Physion includes interactive features that enable users to manipulate objects and parameters in real-time to observe different outcomes from experiments.
  • Community Resources
    The platform has an active community that shares tutorials, simulation models, and problem-solving tips which enhances the learning process.

Emisar.dev features and specs

No features have been listed yet.

Physion videos

Liquids and Soft Bodies Simulation

More videos:

  • Demo - Mini Marble Race

Emisar.dev videos

No Emisar.dev videos yet. You could help us improve this page by suggesting one.

Add video

Category Popularity

0-100% (relative to Physion and Emisar.dev)
2D Simulator
100 100%
0% 0
Infrastructure Management
Block-building Games
100 100%
0% 0
Incident Management
0 0%
100% 100

Questions & Answers

As answered by people managing Physion and Emisar.dev.

How would you describe the primary audience of your product?

Emisar.dev's answer:

emisar is for SRE, DevOps, platform engineering, infrastructure, and security teams that want AI agents to inspect and operate production systems. It is especially relevant to teams managing multiple Linux hosts, clusters, databases, cloud services, or regulated environments where unrestricted shell access and incomplete audit records are unacceptable.

Which are the primary technologies used for building your product?

Emisar.dev's answer:

The hosted control plane and operator interface use Elixir, Phoenix, LiveView, PostgreSQL, and Tailwind CSS. The host runner and MCP bridge are written in Go. Action packs use YAML and JSON Schema, while production infrastructure is managed with Terraform on Google Cloud. The system communicates through MCP, OAuth 2.1, TLS, and WebSockets.

Who are some of the biggest customers of your product?

Emisar.dev's answer:

  • Blitz.gg - game analytics for billions of matches and a pretty large infrastructure.

What's the story behind your product?

Emisar.dev's answer:

Founder Andrii Dryga spent a decade working as a CTO, full-stack engineer, SRE, and DevOps engineer. He experienced the cost of running the wrong command on the wrong cluster, while also seeing AI solve operational problems in seconds. emisar grew from the need to preserve both truths: AI agents are useful, and production access must remain bounded. Its answer is to give agents a reviewed catalog of operations instead of a blank terminal.

What makes your product unique?

Emisar.dev's answer:

emisar lets AI agents work on real infrastructure without giving them a shell. Agents choose from a finite catalog of typed, versioned actions. Policy decides what runs, what requires approval, and what is denied, while an outbound-only runner verifies the action again on the host. New capabilities arrive as packs behind the same MCP integration, and every request is recorded in both a searchable audit trail and a tamper-evident host journal. [

Why should a person choose your product over its competitors?

Emisar.dev's answer:

Choose emisar when you want an agent to keep investigating and handling routine operations without handing it SSH credentials or supervising every call. Compared with raw shell access, copy-paste workflows, or one-off MCP servers, emisar provides reviewed action contracts, host-level enforcement, risk-based policy, scoped access, approvals, pack integrity checks, and a durable audit trail. It is built specifically for governed infrastructure access rather than generic automation.

User comments

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Social recommendations and mentions

Based on our record, Physion seems to be more popular. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Physion mentions (2)

  • Time flies, because we're spending almost a quarter of each day scrolling
    'time scrolling by' with alias of clock time displayed everytime 'enter'/'return' pressed[0a][0b] would seem a bit easier to do than pop-up physics demo with 'clock displaying time flying through demo virtual space[1]. Although the later is bit more visually presentable/interesting. [0a] : https://askubuntu.com/questions/360063/how-to-show-a-running-clock-in-terminal-before-the-command-prompt [0b] :... - Source: Hacker News / over 2 years ago
  • Physion: Interactive Physics Simulations
    Please give it a try at https://physion.net. Source: over 4 years ago

Emisar.dev mentions (0)

We have not tracked any mentions of Emisar.dev yet. Tracking of Emisar.dev recommendations started around Jul 2026.

What are some alternatives?

When comparing Physion and Emisar.dev, you can also consider the following products

SimPhy - Interactive 2D & 3D Physics simulation software

Algodoo - Algodoo is a 2D simulator freeware product designed as a physics learning tool. It was originally created by Emil Emerfeldt as part of his masterโ€™s thesis in 2008. Read more about Algodoo.

Akinator - Akinator is an entertainment app that acts like a digital genie that can read your mind. The game will ask you a few questions about the character you have chosen, and it will attempt to guess the character from your provided answers.

Minecraft - A block-building game that allows you to create and explore entire worlds from scratch.

Crayon Physics Deluxe - Crayon Physics Deluxe

PhET Interactive Simulations - Founded in 2002 by Nobel Laureate Carl Wieman, the PhET Interactive Simulations project at the University of Colorado Boulder creates free interactive math and science simulations.