Snap4Arduino was a Snap! extension, a full Snap! implementation to interact with the physical world, through many types of electronic devices, especially those compatible with Arduino. Starting with Snap! v11, the S4A Connector library is doing this job.
Snap! is a broadly inviting programming language for kids and adults that's also a platform for serious study of computer science. It is inspired by Scratch, written by Jens Mönig and Brian Harvey and presented by the University of California at Berkeley.
Snap4Arduino requiere boards with Firmata firmware installed. Check devices section.
Just download, unpack/unzpip and click Snap4Arduino.
Choose your system: Windows 64 (or its portable option), GNU/Linux 64, MacOSX, Windows32 (or its portable) or GNU/Linux 32.
Install Snap4Arduino connector and then, just play Snap4Arduino online (you can install it as an app from the browser to run it offline).
Chromium/Chrome/Edge browsers are required
Download Snap4Arduino connector, unzip its crx folder, type chrome://extensions, select Developer mode and Upload an unpacked extension selecting that crx file (or just drag and drop it).
Just play Snap4Arduino online (you can install it as an app from the browser to run it offline).
Play online
Plugin for Chromebooks (chrome web store)
Chrome/Chromium/Edge plugin (download extension)
Last Snap4Arduino version is 10.3.6 (released on 08/01/2025) and its Snap4Arduino connector version (chrome extension)is 8.0
You can also find older releases and unmaintained versions
Snap4Arduino requires boards with Firmata firmware uploaded.
You can upload Firmata firmwares direcly from Snap4Arduino (with both desktop and online versions) to UNOs compatible boards. Or just here:
A lot of devices support Standard Firmata. Tested on Nano, Mega, Leonardo and Micro.
Many 32 bit devices support Firmata. Tested on Due, 101, ESP8266 and NodeMCU.
Standard Firmata is directly uploadable with any Arduino IDE.
Other options are: SA5Firmata, Creative Robotix Firmata, MC Firmata Collection, Robotics-unleashed, Snap4ArduinoDev, LCD Firmata and Ultrasound Firmata
Features autocomplete support in the console to prevent operator errors. 2. HTTP APIs and Webhooks
The old interface was replaced with a modern SPA that updates performance metrics in real time without needing page refreshes.
Inbound emails and tracking data can be pushed directly to your web application via HTTP POST requests. 3. Outbound Proxy Support PowerMTA 5.0 released - Postmastery
Because it is a commercial application, . Legitimate installation files are accessible exclusively to license holders. 🚀 Key Features in PowerMTA 5.0
Home / PowerMTA 5.0 released. PowerMTA 5.0 released. 2019/09/30 by Maarten Oelering. On 17 September, PowerMTA 5.0r1 was released. Postmastery HTTP based APIs and webhooks in PowerMTA 5.0
Real-time data visualization via time-based charts for queues, domains, and Virtual MTAs.
Allows email submission over REST/HTTP using JSON payloads, aligning with the SparkPost Transmissions API standard.
To officially acquire and set up the software, the must be obtained through an authorized license from the official vendor via SparkPost . PowerMTA is a leading, enterprise-grade Mail Transfer Agent (MTA) designed to handle extremely high-volume email delivery with advanced traffic management.
PowerMTA 5.0 introduced critical modernization enhancements focused on operational efficiency, modern web standards, and high deliverability. 1. Re-architected Web Monitor
You can find our GitHub repo at Snap4Arduino@GitHub. Please feel free to send us your pull requests and participate in reporting, fixing or commenting on bugs!
Features autocomplete support in the console to prevent operator errors. 2. HTTP APIs and Webhooks
The old interface was replaced with a modern SPA that updates performance metrics in real time without needing page refreshes.
Inbound emails and tracking data can be pushed directly to your web application via HTTP POST requests. 3. Outbound Proxy Support PowerMTA 5.0 released - Postmastery
Because it is a commercial application, . Legitimate installation files are accessible exclusively to license holders. 🚀 Key Features in PowerMTA 5.0
Home / PowerMTA 5.0 released. PowerMTA 5.0 released. 2019/09/30 by Maarten Oelering. On 17 September, PowerMTA 5.0r1 was released. Postmastery HTTP based APIs and webhooks in PowerMTA 5.0
Real-time data visualization via time-based charts for queues, domains, and Virtual MTAs.
Allows email submission over REST/HTTP using JSON payloads, aligning with the SparkPost Transmissions API standard.
To officially acquire and set up the software, the must be obtained through an authorized license from the official vendor via SparkPost . PowerMTA is a leading, enterprise-grade Mail Transfer Agent (MTA) designed to handle extremely high-volume email delivery with advanced traffic management.
PowerMTA 5.0 introduced critical modernization enhancements focused on operational efficiency, modern web standards, and high deliverability. 1. Re-architected Web Monitor