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Rocksi

rocksi.net

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Spec score 7.6 #21 of 26 in Robotics Education Software

What it is

Rocksi is a browser-based simulator for programming a 3D virtual robot with block-based code. It is free, requires no registration, and runs in modern browsers such as Firefox, Chrome, and Safari without a download or installation. Listed robot models include Franka, Niryo NED, Sawyer, and Robotiq grippers. The maker says Rocksi was created with education in mind, for settings such as school classes, university lectures, workshops, and fairs; its stated learner level is mixed. Its software page names Blockly and JS-Interpreter among the programming libraries, as well as three.js, cannon-es, urdf-loaders, and xacro-parser among the 3D libraries. Supported platforms also include iPhone, iPad, iOS, Android, Linux, and Windows. The project is described as MIT-licensed in its source repository. Robokind Stiftung, based in Hannover, Germany, is identified as the responsible organization and privacy data controller. The privacy policy says server logs may contain browser and operating system details, pages visited, visit times, and IP addresses, normally deleted within seven days. The homepage provides an email address for updates and feedback.

Spec sheet

Purpose
Rocksi is a browser based simulator for programming a 3D virtual robot, similar to Scratch or Lego Mindstorms.Read 8 Oct 2026 · rocksi.net
Privacy
The privacy policy says server logs may include browser and operating system details, visited pages, visit time and IP address, and are normally deleted within seven days.Read 8 Oct 2026 · rocksi.net
Support
The homepage provides [email protected] for updates and feedback.Read 8 Oct 2026 · rocksi.net
License
The software page links to the Rocksi source code repository, which describes the project as distributed under the MIT license.Read 8 Oct 2026 · github.com
Headquarters
Hannover, GermanyRead 28 Sep 2026 · rocksi.net
Maker
The imprint identifies Robokind Stiftung as the responsible organization and gives its address as Appelstraße 30, 30167 Hannover, Germany.Read 8 Oct 2026 · rocksi.net
3D libraries
The software page lists three.js, cannon-es, urdf-loaders and xacro-parser among its libraries.Read 8 Oct 2026 · rocksi.net
Browser access
Rocksi runs in modern browsers including Firefox, Chrome and Safari, without a download or installation.Read 8 Oct 2026 · rocksi.net
Education
The maker says Rocksi was created with education in mind and can be used in school classes, university lectures, workshops and fairs.Read 8 Oct 2026 · rocksi.net
Privacy contact
The privacy policy identifies Robokind Stiftung in Hannover, Germany, as the data controller.Read 8 Oct 2026 · rocksi.net
Programming library
The software page lists Blockly and JS-Interpreter among the libraries used for Rocksi.Read 8 Oct 2026 · rocksi.net
Robot models
The homepage names Franka Emika and Niryo robots, while the software page also lists Sawyer and Robotiq grippers.Read 8 Oct 2026 · rocksi.net

Plans and prices

Free Free Completely free; no registration required Read 8 Oct 2026 · rocksi.net

Every Rocksi plan and price →

Strong points and limits

Strong points

  • Free plan costs nothing.
  • No registration or installation is required.
  • Runs in modern browsers and on listed mobile and desktop platforms.
  • Lists four supported robot types.
  • Maker identifies educational settings and mixed learner level.

Limits

  • Coding mode is block-based.
  • Privacy logs may include IP address and browsing details.
  • Server logs are normally deleted within seven days.

Who it suits

Rocksi suits educators and learners looking for a free, block-based 3D robot simulator in a browser. Its listed learner level is mixed, and the maker names classrooms, university lectures, workshops, and fairs as possible settings.

Verdict

Rocksi offers a clearly scoped, no-registration option for block-based robot simulation, with a broad listed platform range and several robot models. Check that its supported robots and block coding fit the intended learning activity.

Where Specifiction places it

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