These are the listings closest to Notes Sidebar in what they say they do. Comparable, not endorsed: the ranking is the catalog's, and the judgement is yours.
Replacing
Notes Sidebar
Category
Productivity · Tools
Its audience
23 users
Comparable listings
8
Comparable listings
Select2NoteDescribes nearly the same job, smaller audience · Narrower access than the original7 users★ 5.0Compare side by side
Annot8Describes nearly the same job, smaller audience · Narrower access than the original3 usersCompare side by side
SwiftNoteDescribes nearly the same job, smaller audience · Wider access than the original14 users★ 5.0Compare side by side
Note SidebarDescribes nearly the same job, smaller audience · Narrower access than the original25 users★ 5.0Compare side by side
SurfNoteDescribes nearly the same job, smaller audience · Narrower access than the original11 users★ 5.0Compare side by side
QuickNoteDescribes nearly the same job, smaller audience · Narrower access than the original12 users★ 5.0Compare side by side
SidenotesDescribes nearly the same job, smaller audience · Fewer sites but more permissions than the original90 users★ 4.6Compare side by side
Comparable listings are pre-computed from the meaning of each store listing, then shown with the audience and rating from our latest pass over the store. Access compares where each listing can run (every site, how many site patterns) and how many browser permissions it declares, against the extension it would replace. Narrower is not a verdict on safety: compare what each needs for the job.