
Citadel Wallet
Citadel Wallet is a specialized hardware wallet designed to offer robust security and a seamless user experience for individuals interacting with the Hedera Hashgraph network. Its development was supported by HeadStarter's Builder Labs.
It features a full suite of secure storage options focused on providing secure storage and transaction capabilities for Hedera's native cryptocurrency, HBAR, as well as Hedera Token Service (HTS) tokens and non-fungible tokens (NFTs).
The Citadel Wallet device emphasizes high-grade security, incorporating features such as Common Criterial Evaluation Assurance Level 6+ (EAL8+) certified Secure Element and a secure microprocessor featuring Trust Zone technology to protect users' private keys offline.
Citadel Wallet is engineered to support the full spectrum of Hedera network services, including native staking, interaction with smart contracts, and management of various Hedera-based assets. It also features a user-friendly interface and offers both USB-C and secure Bluetooth connectivity for flexible interaction with companion applications and decentralized applications (DApps) within the Hedera ecosystem.
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AdsDax is a digital advertising platform founded in 2013 that aims to solve endemic problems in the advertising industry, such as fraud and a lack of transparency, by removing intermediaries and fostering direct, value-based connections between brands and consumers.
The core of AdsDax's service is a self-serve advertising platform that allows brands to create, buy, and sell advertising in a transparent environment. A key feature of their model is the use of incentivised experiences, where consumers are rewarded with digital assets for their engagement with advertising content. This approach, which leverages AI for campaign optimization, is designed to move beyond superficial metrics such as "likes" to drive authentic engagement and build brand loyalty. The platform supports a variety of ad formats, including interactive and video ads, and is utilised by major advertising agencies.
AdsDax uses the Hedera Consensus Service to track and verify millions of advertising events such as impressions, clicks, and conversions in real-time. Each event is recorded on the Hedera public ledger, creating an immutable and auditable trail that provides a single source of truth for advertisers and publishers. This allows for the automated and near-instantaneous settlement of payments to publishers and rewards to consumers using cryptocurrencies.

Hashgraph Application Studio is a specialized no-code/low-code development platform designed to build and deploy enterprise-grade decentralized applications (dApps) on the Hedera network. It is the result of a strategic partnership between Joget Inc., an open-source application development firm, and The HBAR Foundation. The studio essentially provides a Hedera-centric version of the Joget platform, aiming to democratize dApp development by making it accessible to users with limited or no coding expertise.
The platform’s core functionality revolves around a visual, drag-and-drop interface. This allows users to design application workflows, create user interfaces, and manage data without writing extensive code. A key feature is the "Hedera Ledger Pack," a pre-built integration that simplifies complex interactions with Hedera’s native services. Through simple configuration, users can perform on-chain actions such as creating accounts, transferring HBAR and HTS tokens, minting and burning NFTs, and logging data to the Hedera Consensus Service (HCS).
By abstracting the technical complexities of blockchain, the Hashgraph Application Studio significantly accelerates the development lifecycle for Hedera-based projects.

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Ledger is a Paris-based digital assets security firm. Its core products are its hardware wallets, most notably the Ledger Nano series. These devices are designed to store private keys in a secure, offline environment, protecting them from online threats.
Ledger also provides the Ledger Live application, an all-in-one platform that allows users to manage digital assets, buy, sell, and swap cryptocurrencies, and access a wide range of DeFi and Web3 services. For institutional clients, Ledger Enterprise provides a comprehensive, customizable infrastructure for safeguarding digital assets at scale.
The Ledger Nano S Plus and Nano X hardware wallets support Hedera’s HBAR token, allowing users to securely store their assets. Through the Ledger Live app, users can create a Hedera account, manage their HBAR, and interact with the Hedera ecosystem. This integration also extends to staking, as users can connect their Ledger device to third-party wallets such as HashPack to participate in HBAR staking.
