NetsBlox
NetsBlox is a free, cloud-based visual programming language for creating networked programs such as multiplayer games.
What NetsBlox is
NetsBlox is a free, cloud-based visual programming language for creating networked programs such as multiplayer games. Rooms and remote messaging allow separate clients to exchange structured messages over the internet. Programs can call server-provided procedures for third-party utilities and NetsBlox capabilities. Documented services connect with Google Maps, ThingSpeak, ParallelDots, and Azure Translation, while other services expose NOAA climate data and OpenWeatherMap weather data. PhoneIoT lets projects use phone sensors and custom widgets such as buttons, joysticks, and image displays. RoboScape Online provides a free robotics simulator for creating scenarios and collaborating in shared simulations. Users can build custom services that appear in the call RPC block’s Community section. An account is not required, although accounts enable saving projects on the cloud server. Projects can remain private or be shared publicly under a Creative Commons Attribution-NonCommercial-ShareAlike license. Self-hosting guidance recommends Docker and requires MongoDB plus filesystem access for blob storage. NetsBlox is a Vanderbilt University project, mainly aimed at ages 12–20 while welcoming everyone. Cloud storage limits may apply.
Good
- Free visual programming environment
- Supports networked projects and multiplayer games
- Includes phone-sensor and custom-widget projects
- Offers a free collaborative robotics simulator
- Allows custom community services
Watch out
- Cloud storage limits may apply
- Self-hosting requires Docker, MongoDB, and blob storage
- Public projects use a noncommercial ShareAlike license
Who it suits
It suits learners, especially ages 12–20, who want project-based programming with networking, data services, phone sensors, or robotics.
Verdict
NetsBlox combines visual programming with internet messaging, external services, phone projects, and robotics simulation. It is a practical fit for collaborative computer-science learning and networked creations.
Plans and prices
From NetsBlox's own pricing page, checked 11 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| NetsBlox | Free | Free software; the site may set limits on cloud storage |
The facts
Each one read from NetsBlox's own pages, with the date it was checked.
What it does
- Audience
- The terms say NetsBlox is targeted mainly at users ages 12–20, while welcoming everyone.checked 11 Oct 2026
- Custom services
- Users can create custom services, which appear under the Community section of the call RPC block.checked 11 Oct 2026
- Data sources
- Services provide access to datasets including climate data from NOAA and weather data from OpenWeatherMap.checked 11 Oct 2026
- Integrations
- Documented service integrations include Google Maps, ThingSpeak, ParallelDots, and Azure Translation.checked 11 Oct 2026
- Limits
- The terms say the site may set cloud storage limits and restrict storage to media intended for programming projects.checked 11 Oct 2026
- Networking
- Rooms and remote messaging let separate NetsBlox clients exchange structured messages over the internet.checked 11 Oct 2026
- Phone IoT
- PhoneIoT supports projects that use phone sensors and custom screen widgets such as buttons, joysticks, and image displays.checked 11 Oct 2026
- Privacy and accounts
- An account and personal information are not required to use NetsBlox; accounts enable saving projects on its cloud server.checked 11 Oct 2026
- Project sharing
- Projects can be saved privately or shared publicly, and publicly shared work is licensed under Creative Commons Attribution-NonCommercial-ShareAlike.checked 11 Oct 2026
- Robotics
- RoboScape Online is a free robotics simulator where students can create scenarios and collaborate in shared simulations.checked 11 Oct 2026
- Self-hosting
- The installation guide recommends Docker and says NetsBlox requires MongoDB and filesystem access for blob storage.checked 11 Oct 2026
- Services
- Server-provided services let programs call remote procedures for third-party utilities and NetsBlox capabilities.checked 11 Oct 2026
- What it does
- NetsBlox is a cloud-based visual programming language for creating networked programs such as multiplayer games.checked 11 Oct 2026
The company
- Headquarters
- Nashville, Tennessee, United Stateschecked 28 Sep 2026
- Maker
- NetsBlox is a project of the Institute for Software Integrated Systems at Vanderbilt University.checked 11 Oct 2026
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