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High-Performance Commercial Native Suite

Cellular Modem AT Command Terminal & SMS PDU Hex Decoder

Direct AT command terminal for 4G/5G cellular modems (Quectel, SIMCom, Sierra Wireless), 3GPP SMS PDU hex encoder/decoder, and RSRP signal meter.

Buy Lifetime License ($29.99) Test Live Engine Demo
Competitor Comparison Why ModemAt Terminal Is Cheaper & Better
Save $40/yr vs AT Command Tester Pro ($49/yr)
Traditional Alternative:
AT Command Tester Pro ($49/yr)
$49/year recurring subscription
Heavy Java runtime requirement, awkward interface, lacks modern 5G RSRP/RSRQ cellular diagnostics
Vivian Commercial Engine:
$29.99 One-Time Perpetual
100% Offline Air-Gapped C++17
One-time $29.99 perpetual license, native lightweight C++ binary, 5G signal monitors, integrated PDU decoder
Native Desktop Application • Real GTK3 Program Screens
Live Compiled Binary Technical Wiki →
ModemAt Terminal Native UI Showcase

Core Engine Capabilities

  • Direct serial CDC-ACM communication with automated baud rate negotiation
  • 3GPP TS 27.005 SMS PDU hex frame encoder and decoder
  • Live signal quality monitoring (CSQ, RSRP, RSRQ, SINR) with gauge display
  • Preset macro library for APN configuration, GPS NMEA streaming, and network registration

Dual GUI & Console Interface

Designed for automated batch pipelines and power users alike. Features a high-performance native desktop GUI (GTK3 on Linux / Win32 on Windows) alongside a headless command-line interface with scriptable switches.

# Run native desktop GUI:

./modemat --gui

# Headless batch processing:

./modemat --terminal-sample

Interactive Engine Testbed

Microsecond Benchmarking

Test the live commercial engine execution in your browser through Cloudflare Cloud Platform:

Click 'Execute Engine Test' to dispatch benchmark telemetry...
Perpetual Commercial License
$29.99 / one-time