- Alias System (done) - similar to DNS
- Arbitrary Messages (partially) - any soft can send messages in custom format
- Asset Exchange (done) - currency/stock exchange
- Distributed Computing (concept not ready) - similar to BOINC
- Distributed Storage - similar to Torrent
- Instant Transactions (requires peer review) - transactions with guaranteed confirmation
- Mixing Service (concept not ready) - laundering service
- Multisignatures - multisignatures
- Service Providers - off-chain services
- Shrinking - shrinking of bloated blockchain
- Smart Contracts (concept not ready) - http://en.wikipedia.org/wiki/Smart_contract
- Transparent Mining (partially) - can't describe in few words
- Two-phase Payments - payments with extra confirmation
- Voting System - good old democracy