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.

Ignis is a blockchain platform that is being developed by Jeluirda; the company behind Ardor and Nxt. Ignis is a child chain of the Nxt blockchain. Jelurida is developing blockchain platforms that will enable users to develop decentralized applications, and will be based on a parent and child chain architecture.
Ignis allows users to create child chains with specific features and to create tokens that meet their needs. This project is closely related to Ardor and Nxt.

Securitize is a security tokenization platform. The company is focused on compliance and regulatory issues, and their dashboard helps clients manage the entire life cycle of a token. Token issuers can manage all aspects of their tokens, including issues related to regulation, fractional ownership, and driving liquidity. To do this, Securitize has developed an innovative protocol for managing ownership of digital assets. Their Digital Securities (DS) protocol will support third party apps, and will help address all aspects of the digital security life cycle, as well as the interests of investors, exchanges, and other stakeholders.