Holo is a decentralized hosting provider that is built on top of Holochain. DApps can be set up and deployed with Holo hosting, as a decentralized alternative to Amazon Web Services, or other centralized hosting solutions.
Holochain is a protocol for creating decentralized Apps and is different from blockchain protocols in several ways. The main difference being that Holochain takes an agent-centric approach to their consensus mechanism, and has a different approach to validating value transfers.
The HOT token is used for paying for hosting services on Holo, and users can be paid for offering their computing resources.

Kadena is a software development company that builds blockchain-based platforms for a range of businesses. They develop purpose-built blockchain solutions for their clients by using proprietary solutions that are aimed at being both secure and scalable. Kadena offers both private and public blockchain platforms, with smart contracts written in the Pact programming language. They've also developed an innovative proof-of-work architecture called ChainWeb that could have a variety of applications.
Kadena's founders have experience working for the U.S. Securities and Exchange Commission (SEC) and JPMorgan Chase Bank. The company has raised significant funding and is well positioned to be play a big role in developing future blockchain solutions for large financial institutions.

Komodo is a blockchain building platform that is focused on developing anonymity and security focused solutions. Komodo's platform, which was originally a fork of ZCash, is powered by the KMD token, and enables users to send anonymous transactions. Komodo has a delayed Proof of Work consensus algorithm.
Komodo also operates Chainmakers and Chainzilla; which assist clients in creating their own blockchains, decentralized applications, and initial coin offerings. Komodo also provides services related to wallet integrations and blockchain security.
Komodo held the first ever decentralized ICO and pioneered the concept of a dICO. Their goal is to allow users to more easily build blockchain solutions and decentralized exchanges. They are developing a decentralized ICO (dICO) platform as well as a decentralized exchange platform called BarterDEX.