Proof of concept prototype cross-browser extension for client-side only bookmarks manager that stores your bookmarks in IPFS. File that holds bookmarks is found using IPNS, and username is equal to the private key name that should be created on IPFS node that you are running (see below how). Bookmarks are encrypted using the encryption key generated from username and password, and login is verified by comparing the header of the file that is generated from the same information.
Set up CORS for IPFS on your machine:
ipfs init
ipfs config Addresses.API /ip4/0.0.0.0/tcp/5001
ipfs config --json API.HTTPHeaders.Access-Control-Allow-Origin '["*"]'
ipfs config --json API.HTTPHeaders.Access-Control-Allow-Methods '["PUT", "GET", "POST"]'
Start IPFS daemon on localhost:5001
ipfs daemon
# In other terminal:
ipfs key gen --type=ed25519 username
If you want to be able to use bookmarks from other machine, you need the same key on that IPFS node by copying key form ~/.ipfs/keystore.
$ npm install
npm start
npm run build
npm run package-dev chrome
npm run package-dev firefox
npm run package-dev opera
npm run package-dev edge
npm run build chrome
npm run build firefox
npm run build opera
npm run build edge
It's just proof of concept, and there are many things that could be fixed when it comes to user interface, like to know that IPFS operations are in progress and proper logout, to name a few, as well as improvements like better integration into browser. Also, performance is bad mostly because of IPNS publishing, so this is something worth looking into.