pchem

It's based on Firefox, but those modifications do have a rather large impact in terms of privacy.

$ fuck

Comes in handy quite frequently.

Keepass allows you to use a passphrase in combination with a randomly generated keyfile. You only need to copy the keyfiles to your devices once (not via cloud services, obviously). Your actual database can then be synchronized via any cloud provider of your choice (hell, you could even upload it publicly for everyone to see) and it would still be secure.

Telegram being next to Signal is also questionable.