Repaired URLs in README.
Substituted TorChat, which is no longer maintained, by RicochetIM.
Added miniLock.
Added TinFoilChat.
Added OnionShare.
Added LocalBox.
Added SyncThing.
Added SimpleInvoices.
Added GNUCash.
Added Wallabag.
Added SignaliOS.
Added gpg4USB.
Added PirateBox.
Added Lutim.
Added Searx.