I found yearn.finance as well. It could be interesting to discuss about.
Helo,
I found Airswap: https://www.airswap.io/
Category: Dexes
Tech stack: Ethereum
Problem they solve: Peer-to-peer trading with NO FEES
I think Swipe (https://docs.swipe.org/) can should be added to your DeFi Ecosystem overview.
Overview: Swipe is a Decentralized Finance (DeFi) platform that enables cryptocurrency financial products powered by SXP tokens. Swipe was founded in 2018 by Joselito Lizarondo with the mission to bring cryptocurrency interoperability with traditional finance and was later acquired by Binance in June 2020. More info: https://swipe.io/Whitepaper.pdf
I would like to learn more about Aave and Trust swap.
Thank you Amadeo for the knowledge you are sharing! Very useful! I am quite new to this crypto space, but I did my research on a CELO project and it seems interesting by the idea they are providing. Connecting people globally is a new step towards the future. 
Hi @amadeobrands and All,
I am new to the DeFi space and am so grateful for all that I am learning from this course!
I just spent some time looking up projects on your DeFi Ecosystem Overview and I am really interested in the Melon Protocol as a decentralized option for managing wealth. Thereās a relatively small amount of assets under management but I can see this growing as it cuts out so many third parties and increases gains for investors over time because all the fees to manage and verify the fund are managed easily through the melon protocol with smart contracts and blockchain for auditing and verifying. I also think Melon is great because of the low cost to enter in a fund and the control the investor has over there funds. Very cool!
It seems that Balancer and Curve finance are the basic building blocks behind a number of yield farming protocols. Also, with the incredible congestion and gas fees experienced on the Ethereum network, there has been a lot of interest in layer 2 solutions. These include Matic, Loopring, xDai and OMG. Along with this has been the rising interest around the entire PolkaDot ecosystem and how the various protocols that constitute this ecosystem can effectively address not only high fees and network congestion, but also cross chain interoperability.
They now have an independent wallet to use as well. They really are a company to watch in the defi/cefi world
I am actually just learning about dex exchanges like uniswap. These are fully trustless exchanges that allow you to exchange one coin for the next. Much like with DAI users provide a liquidity pool where interest can be earned.
This is a much more interesting topic than I had imagined. Thanks for providing it.
Flamingo.finance
Itās a new one being launched tomorrow. Itās a defi protocol on NEO.
Honeyswap and Trustswap
There is a DeFi project called āpool by cakeā where you can lend BTC and get interest, as well as staking other coins.
I think that Fantom (FTM) looks promising. In the near future digital assets will find their way into mainstream. If it happens before ETH 2.0, fees might get astronomically high, therefore synthetic assets might be good idea if we just want to make some cash on trading.
My opinion you should add Celcius Network. Very simple to use for beginners and very good APY.
You should definitely check our (Xor) The Sora Decentralized Autonomous Economy (DAE) is the worldās first decentralized economy.
I canāt currently think of any not listed yet but I will return with one. I will say that the DeFi ecosystem is growing at a tremendous rate and with more users being onboarded every day it is almost a no brainer to see where the financial/investment community is leaning towards.
Zapper
Asset Management Tool
- Zapper is a system focused on abstracting away the complexities of composing and accessing the most innovative opportunities in open finance.
Cream Finance
Lending
- C.R.E.A.M. is a crypto lending and borrowing dApp based on the Compound protocol with altered pools assets and own governance token.
Hegic
Derivatives
- Hegic is on-chain options trading protocol, allowing you to buy ETH call and put options as an individual holder (buyer) or sell ETH call and put options as a liquidity provider.
Matcha
DEX
- Matcha is a crypto trading platform with smart order routing powered by 0x. Matcha aggregates liquidity from multiple sources, including 0x, Kyber, Uniswap, Oasis, Curve, and others.
Etherisc
Insurance
- A decentralized insurance protocol to collectively build risk transfer solutions.
Kava has gotten some attention recently. It is cross chain-defi using cosmos.