Bitcoin Fog acts as a mixing service or an online wallet. This service operates only through tor anonymization network. When requested, funds are paid out in multiple randomized transactions to further anonymize the source of money.
Helix Light is a instant bitcoin mixing service developed and operated by the creator of Grams. Unlike regular Helix you don't need to sign up for a Grams' account. Grams’ helix doesn’t just clean your bitcoins it gives you brand new ones which have never been to the darknet before.
BitBlender allows you to quickly mix your bitcoin with the Quick Mix function or to create an account (recommended) if you plan to use the service multiple time.
BitMixer has a huge reserve of Bitcoins already in its system. Instant mixing service.
CryptoMixer is the most user friendly Bitcoin Mixing service. Service has its mobile version and affiliate program. The mixing is often done instantly and the coins are sent back as soon as your coins come in. Minimum fee is 0.5% plus 0.0005 BTC for every incoming transaction. Custom fee allowed. Good alternative to Helix Light or BitMixer.