New list of very promising Airdrops and Bounties available at the beginning of April. There are many Airdrops and Free Coin Giveaways on the Internet, but most of them are just scams or not giving away huge value. That's why I selected the most interesting projects available at the moment.
Some tokens like Viberate (VIB), Swarm (SWM) or Sphere (SAT) are already listed on main exchanges. Another projects are very promising ICOs worth investing like KONIOS, LaxmiCoin (LXM) and SynapseAI.
If you see any other interesting projects, which I have missed here just feel free to comment and ask. I will be thankful for any suggestions.

KONIOS

The Konios platform offers the safest exchange platform for cash & cryptocurrencies worldwide. You can get 1000 KON tokens for registering on their website, joining their Telegram Group and Twitter. Additionally per each friend you can get 100 KON. Great project with huge potential!
https://airdrop.konios.com/?r=2WRBNBOK2FI-3745779

Swarm (SWM)

Swarm Fund is the blockchain for private equity. It’s a fully decentralized capital market place that democratizes investing. You can get for free 10 SWM tokens for registering and completing your profile verification KYC. Additionally you can earn 5 tokens per each verified refferal. Swarm is already on main exchanges and price per token is around 6000 satoshi. Highly reccomended!
https://invest.swarm.fund/r/GA4U6JRUV6PCTFE4P2JMX6INHLK2AIJ7CV6FKQ3PYMXXD6RRP66LKHAT

Viberate (VIB)

A very promising coin from music sharing sector. Already listed on many main exchanges like Bittrex. You get free VIB for registration, refferals and for participating in promotion programs. You can withraw them immedietely and exchange or trade!
https://www.viberate.com/referrals/0c5320dd_0ef82bcc_c8cba581

Sphere

A great project with very experienced and professional team. It is responsible for creating a Decentralized Social Network. One of the best ICOs of 2018. You get 50 Sphere tokens for registration and in the Phase 3 of ICO 20 SAT per refferal. Highly reccomended. Token distribution soon. Already listed on IDEX exchange.
https://sphere.social/?ref_code=6wxph53vrgnb

LaxmiCoin (LXM)

LaxmiCoin, known as Bitcoin of India, is the first India's legal digital cryptocurrency. It has been approved officially by India Government. During the ICO period you can get 500 LXM for registration and additional 20 for each refferal. With such an cooperation this coin has a great future perspective.
https://myaccount.laxmicoin.com/register?ref=7ww4izpz22w4404k

SynapseAI

A future competitor of DeepBrainChain and SingularityNET Artificial Inteligence projects. You get 50 SYN for registration and 100 per each refferal.
https://tokensale.synapse.ai/r/13642

LAPO Blockchain (LAX)

LAPO Blockchain is building a revolutionary financial platform empowering businesses, traders and consumers with a human centered payment solution integrated with a secure decentralized exchange powered by Artificial Intelligence. They have a great and professional team. You can get 100 LAX for easy registration on their website and 50 per each person you reffer.
https://app.lapo.io/?ref=Z4khxx7Bk3

NextyCoin (NTY)

An innovative and fully developed next generation platform. You can exchange your NTY coins immedietely for Bitcoin and Ethereum and withdraw them. Nexty Platform offers instant transfers, free transactions and price stabilization stystem. You can earn free NTY coins for registration, joining Telegram Group, being active on social media and reffering friends. Coins are distributed every month.
Register:
http://app.nexty.io/account/register?refer=djograft
Join Telegram Group:
https://telegram.me/nextybot?start=djograft

Refereum (RFR)

Get free Refereum tokens for registration, watching videos, joining Telegram Group, playing games and reffering friends. Already listed on CoinMarketCap and IDEX exchange. Tokens are distributed on your Ethereum/MetaMask Wallet address every week. Getting 500 or 1000 tokens is extremely easy. Huge reccomendation.
Register:
https://refereum.com/?refid=z3xc6zjhi1
Join Telegram Group:
https://refereum.com/Telegram/9b619a3d-6c1c-4d58-9ff6-a5aa0f16f005

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CryptoCarbon (CCRB)

The World's Most Innovative Consumer-Oriented Cryptocurrency. Extremely interesting ICO with huge potential. The project is already listed on many exchanges like C-Cex, Livecoin and BTC-Alpha. You get 5$ worth CCRB tokens for registration and 10$ worth for each refferal. You can exchange tokens immedietely on site and withdraw them.
https://ccrb.io/979270

Aelf (ELF)

Get Aelf coins for free. Already listed on main exchanges line Binance and ranked 65th on CoinMarketCap! You earn coins by registration, refferals and completing some quick tasks on their site. You can withdraw ELF to an exchange or just keep for a long time.
https://candy.aelf.io/account/register?invitationCode=0F1MbE0ZfL7K

MaxData

New ICO Airdrop of MaxData project. Professional team, very interesting idea and many free coins for both registration and refferals.
https://airdrop.maxdata.io/?kid=MABCF

NAUTICUS

New ICO of Nauticus Blockchain. Right now you can get 100 tokens for registration and additional 100 per each person you reffer. High future potential!
https://nauticus.io/ref/ec0ef379200487a1e190510429e31522248f5cc0e8a957e9cf32d2d025df7390

GameX (GX)

GameX is an amazing gaming token build on Waves Platform. You can earn 12 GX for registration, 3 GX per visiting website, friends refferals and many additional achievements. You can withdraw token to your wallet or exchange once per week.
https://gamex.co.in?mref=djograft