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Tera Term vs Tabby: catalog facts
Tera Term	Tabby
Free The software is free under its open-source licence. Hosting, hardware and external…	Free Free and open source under the MIT licence.
Windows	Windows, macOS, Linux
Serial console support, a macro language for automating sessions and signed binaries make it a staple for network…	Local shells, SSH, Telnet and serial connections in one program Encrypted container for SSH secrets and configuration
The interface is dated, and it is Windows-only with no tabs in the classic sense.	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: BSD-3-Clause	License: MIT
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 21, 2026

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