There are still many cpu mined cryptocurrency out there and profitable , if you have some old pc its time you clean them and start earning extra profit mining coins of your choice from the list below
1 HOdlcoin Coin
Block Time: 154 seconds
Subsidy: 50 HODL subsidy per block
Halving: Every 4 years
Mining Supply:Total of 81,962,100 HODL will be mined
Interest Supply: Between 150,000,000 and 500,000,000 HODL will be paid in interest to HODLers
Fair launch: No Premine/Instamine/Ninja/100 initial 1 HODL blocks
RPC Port: 11989
Testnet Port: 8989
Proof of Work: 1GB AES Pattern Search POW
Codebase: Bitcoin 0.11.2
Proof of Work
1GB AES Pattern Search POW. Pattern Search involves filling up RAM with pseudo-random data, and then conducting a search for the start location of an AES encrypted data pattern in that data. Pattern Search is an evolution of the ProtoShares Momentum PoW, first used in MemoryCoin and later modified for use in CryptoNight(Monero,Bytecoin), Ethash(Ethereum). CPU/GPU friendly.
Read more about this coin , https://bitcointalk.org/index.php?topic=1317918.0
i own some coins till now until it mature.
2 Nexus coin
SHA3 [Skein and Keccak]
Prime, Hash, and Nexus Proof of Stake (nPOS)
78 Million over a 10 year distribution period for the Prime and Hash Channels.
Maximum Annual Inflation
nPOS: Up to 3% annually; 2% after initial distribution is complete
Prime and Hash Minting Channels: 1% annually after initial distribution is complete
300 seconds for Hash minting channel and 300 seconds for Prime minting Channel for an average of 150 seconds
60 seconds for nPOS
Prime and Hash Minting Channels: The effective reward is established by the reserve balances. These reserves have a decayed amount deposited every time interval of one minute. If the balance is below a given threshold, the reward value will be based on a time’s value of a decayed amount. This means that the reward will be given based on how long it was taken to create the block. This prevents the reserves from being depleted as large amounts of computing power jump on and off the mining network.
nPOS Minting Channel: The effective reward is an annual interest rate that ranges between 0.5 and 3.0% annually.
The miner’s difficulty is calculated by a proportion generated from the time it took to create the block, and the target time. The target time is calculated by the NEXUS Reserves working to deflate the difficulty if the reserves go over a threshold. This is designed to maintain transaction processing in the loss of computing power to given channel, by aiding in the reduction of the difficulty to a more suited level.
market cap as at june 2017
Read more at bitcointalk.org thread link https://bitcointalk.org/index.php?topic=657601.0
PoW: new idea, prime numbers, not Cunningham chains
Blocks every 2.5 minutes
Block reward of 50RIC, halving every 840000 (about 4 years)
Cap: about 84 million RIC
Difficulty adjustments every 288 blocks (12hs)
RPC port 28332, or 38332 for testnet
P2P port 28333, or 38333 for testnet
this coin has always been most profitable CPU mined coin and 99% of miners are mining this coins as its booming everyday
PoW algorithm: CryptoNight 
Max supply: Infinite (see note below) 
Block reward: Smoothly varying 
Block time: 120 seconds
Difficulty: Retargets at every block
 CPU + GPU mining (about 1:1 performance for now). Memory-bound by design using AES encryption and several SHA-3 candidates.
 Initial number of atomic units is M = 264 - 1. However, once the block reward reaches 0.3 XMR per minute (sometime in 2022) that is treated as the minimum subsidy, which means that Monero's total emission will forever increase by ~157680 XMR annually.
 Uses a recurrence relation. Block reward = (M - A) * 2-20 * 10-12, where A = current circulation. Roughly 86% mined in 4 years
Read more of this coin at bitcointalk.org thread https://bitcointalk.org/index.php?topic=583449.0