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Sidebery vs Workona: catalog facts
Sidebery	Workona
Best for: Vertical tab tree and bookmarks sidebar with container support	Best for: Organises tabs into per-project workspaces that sync across devices
Free Free and open source under the MIT licence.	Free + paid options A limited free tier is available. More workspaces and team features are paid.
Browser extension	Browser extension
Panels can be bound to containers, keeping work and personal tabs apart Built-in snapshots restore a previous tab layout	Workspaces sync across machines and can be shared with colleagues Suspends tabs you are not using rather than keeping them loaded
Firefox only The number of settings makes first setup slow	Requires an account and stores your tab data on their servers Beyond a small number of workspaces it is a paid subscription
Browser extension	Browser extension
Open source	Not open source
License: MIT	License not stated
Not stated if an account is needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Sources for Sidebery addons.mozilla.org/firefox/addon/sidebery github.com/mbnuqw/sidebery Catalog checked September 22, 2026	Official website Full listing and sources Sources for Workona workona.com Catalog checked September 22, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.