Dimension scores are derived from public data and fields; weighted into the composite. Reference only.
HTerm is a local serial communication terminal program from der-hammer.info, available for Windows and Linux. It is mainly used for debugging hardware serial ports, virtual USB serial ports, and RS232 devices, making it suitable for embedded development, device bring-up, and serial log analysis. The software is written entirely in C++ and uses libraries such as wxWidgets, fmt, and spdlog.
In terms of features, HTerm covers the common essentials for serial port debugging: support for all available hardware and virtual serial ports, baud rates supported by the port, custom baud rates, ASCII/hex/binary/decimal input and output, file sending and receiving, parity, and flow control. Recent versions also improve the combined send/receive view, with coloring by data source, source-specific line-break behavior, and support for saving combined sent and received data. The CMD input mode can execute dtr/rts control and wait delays, making it useful for simple automated sending workflows.
HTerm supports Windows and Linux, with downloads available for Windows, Linux 32bit, and Linux 64bit, along with multiple older versions. The page mentions compatibility with Windows XP and 32-bit Windows, as well as Linux x86/x64 support. Raspberry Pi/ARM support is still under investigation, and no MacOS port is planned. HTerm is not open-source software: although it uses open-source libraries, its own license prohibits modification, sale, and unauthorized redistribution. Commercial use of the program itself is allowed.
The page does not list any paid plans; the software is available as a free download, with a suggestion to support the author via PayPal. Documentation includes a README, FAQ, changelog, licenses, and a bug reporting process. It covers practical topics such as launching with configuration files, keyboard shortcuts, Linux launcher installation, log export, and common missing-library issues. Overall, the documentation is useful. However, some capabilities—such as comport search mode and saving custom baud rates—still require directly editing configuration files, which is not entirely beginner-friendly.
HTerm’s strengths are its focused feature set, lightweight design, and long-term maintenance, with ongoing fixes for large data views, HiDPI, dark/accessibility themes, and legacy system compatibility. Its drawbacks are also clear: restrictive closed-source licensing, no API/SDK, no MacOS version, no official Linux ARM support yet, and limited UI modernization and configuration convenience. It is a good fit for hardware, embedded, and test engineers who need a reliable desktop serial terminal. If you need open source, macOS support, or a stronger command-line automation ecosystem, you may want to compare it with PuTTY, Tera Term, RealTerm, CoolTerm, minicom, CuteCom, and similar tools.
The collected text does not provide information about access from mainland China, mirrors, or payment availability, so the access status is unknown. If PayPal payment is restricted, consider contacting the author directly. If downloads are unavailable, the common serial terminal tools mentioned above can be used as alternatives.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on der-hammer.info official site.
der-hammer.info is an Germany Dev Tools provider. TG4G tracks its product information, an overall rating of 6.0/10, and a China-accessibility score of Workable. Click "Visit Official Site" to reach der-hammer.info directly.