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Serial vs Tabby: catalog facts
Serial	Tabby
Paid Costs $39.99 with a free trial and upgrade pricing for earlier owners.	Free Free and open source under the MIT licence.
macOS	Windows, macOS, Linux
Built-in support for most serial adapters without installing drivers Hex view and hex send panel for binary device protocols	Local shells, SSH, Telnet and serial connections in one program Encrypted container for SSH secrets and configuration
macOS only Paid licence after the trial	Electron, so start-up and memory use are well above a native terminal The plugin ecosystem is small
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 21, 2026

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