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SerialPort

Access serial ports for reading and writing in Node.js applications.

Status
Generally available
Last checked
Aging · Sep 3, 2026
License
Open source
Pricing
Free tier · from $0
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What it is

SerialPort is a powerful library that allows developers to interact with serial devices through their software. It's essential for projects involving hardware communication, IoT, or any application requiring direct access to serial port data.

SerialPort stands out as a robust, cross-platform library for Node.js developers who need to interface with serial devices efficiently and reliably.

When it fits — and when it doesn’t

A good fit for

  • Projects requiring direct access to hardware through serial ports in Node.js applications.

  • Developers working on IoT projects that need reliable and efficient communication with serial devices.

Look elsewhere if

  • Applications that do not require interaction with serial devices or ports.

  • Scenarios where the primary focus is on cloud-based services without local hardware interaction.

Known weaknesses

Each one links to the public issue, changelog or docs page it came from, where we have one.

  1. 01

    Steep learning curve for non-JavaScript developers

    The library is deeply integrated with Node.js streams and asynchronous patterns, which may be unfamiliar to developers from other language backgrounds.

  2. 02

    Limited documentation and examples

    Official documentation lacks comprehensive tutorials or detailed explanations for advanced use cases, making it difficult for new users to fully leverage the library's capabilities.

  3. 03

    Performance issues under heavy load

    SerialPort can exhibit performance degradation when handling large volumes of data due to its reliance on Node.js event loop and stream processing, which may lead to delays or dropped packets in real-time applications.

  4. 04

    Complex setup for certain hardware configurations

    Setting up SerialPort with specific types of serial devices (like custom-built boards) can require extensive configuration and troubleshooting, which may be time-consuming and error-prone.

What it does well

  • Cross-platform support for Windows, macOS, and Linux.

  • Asynchronous API for non-blocking operations.

  • Stream interface compatible with Node.js streams.

  • Supports flow control (XON/XOFF) and hardware handshaking.

Pricing

Free tier
YesOpen source — free to use
Paid from
$0
Model
Flat rate
Enterprise plan
No

Pricing not independently confirmed — check the vendor’s page.

Performance benchmarks

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Set up SerialPort

Setup steps, common gotchas and what to check after 30 days.

Open the setup guide →