When comparing Flashbackr vs vimwiki plugin for vim, the Slant community recommends vimwiki plugin for vim for most people. In the question“What are the best Evernote alternatives?” vimwiki plugin for vim is ranked 29th while Flashbackr is ranked 45th.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Unlimited free space
There is no limit to how much free space you can get on Flashbackr by inviting friends, which is a great feature for an Evernote alternative.
Pro Well designed
Pro Efficient
Pro Simple
Pro Internal link makes it easy to create a knowledge network
Pro Comfortable for Vim users
Has a very minimal learning curve for people already used to Vim, as the preset shortcuts are very easy to learn and don't conflict badly with other Vim behaviors.
Cons
Con No encryption
Content is not encrypted and therefore sits at rest in a format visible to the developers. This is therefore the same low level of privacy as with Evernote, Google Keep and OneNote.
Con Limited to use with vim only
vimwiki is a plugin for vim, so you won't be able to make use of it if you're not a vim user (and don't want to be).