What is similar to Arweave?

Could you elaborate on what other projects or technologies are similar to Arweave in terms of their functionality, purpose, or underlying technology? Are there any other decentralized storage solutions that aim to provide permanent and tamper-proof data storage like Arweave? Additionally, are there any blockchain-based projects that share similar characteristics, such as a focus on data immutability and decentralization? Understanding the landscape of similar projects can help us better appreciate the unique value proposition of Arweave.