Stakenet (XSN) is great for passive income. Can either Stake or run a MN. If you stake you can do so normally in the wallet, use TPoS or use their multi-currency cloud staking.
TPoS is their offline staking solution and works great. They have confirmed integration for Ledger and Xeeda so will be able to Cold Stake from those devices too soon.
MN's will receives additional income from services running on their MN Network like the DEX and incoming privacy features.
They are also rolling out CCPoS (Cross Chain PoS) so you will be able to stake one thing but receive your rewards in something else like BTC or whatever you want.
Their Cloud staking is aimed at people who aren't so tech savy and just want to dump their coins somewhere and receive rewards. The cloud wallet also stakes PIVX and Strat currently with Decred and others on the way.
They will also be adding MNaaS very soon which allows you to trustlessly have them run, update and maintain your MN for you while you keep control of your coins.
The kicker is though it's Mcap is only around $10M so not only are you getting a nice steady ROI from rewards you could also get a x10 if it takes off and with all the stuff they have coming I don't think it's a matter of if but more like when. They already were the worlds first to bring TPoS to crypto, one of the first PoS/MN projects to implement Segwit, Lightning Channels and Atomic Swaps, CCPoS is another of their inventions so they are well accomplished already.
Check out this article they just put out about their Lightning Swaps:
https://medium.com/stakenet/lightning-network-and-atomic-swaps-f24eb4996eb9Instant payments: Lightning-fast instant payments across the entire blockchain without any limitations caused by the block confirmation times. Due to smart contracts, the security of the transactions is ensured without the need of an on-blockchain transactions, so that a payment speed of milliseconds to seconds can be achieved.
Scalability: Allows the processing of millions to billions of transactions per second across the network. This capability outperforms all previous legacy payment rails and attaches a payment per action/click is now possible without custodians or third-party services.
Low cost: Using an off-blockchain transaction setting profits in exceptionally low fees in the Lightning Network. This enables completely new use cases such as instant micropayments.
Cross blockchains: Cross blockchain transactions will be possible if both chains are connected due a compatible second layer protocol or are supporting the same cryptographic hash function on their own. Given that, it is possible to execute trustless transactions between different blockchains.
I don't think there are many more projects that have a better future outlook than XSN