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SimplySerial vs Tabby: catalog facts
SimplySerial	Tabby
Free Free and open source under the MIT licence.	Free Free and open source under the MIT licence.
Windows, Command line	Windows, macOS, Linux
Runs directly in a Windows console window Quick way to open a serial connection	Local shells, SSH, Telnet and serial connections in one program Encrypted container for SSH secrets and configuration
Windows only Basic feature set compared with full serial terminal programs	Electron, so start-up and memory use are well above a native terminal The plugin ecosystem is small
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 21, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.