Permapaste is a web3 alternative for Hastebin and Pastebin. It is built on top of Arweave, which makes it stand out from other pasting tools by promising to keep the pasted content immutable, forever on the permaweb.
Permapaste is free for pastes under 100 Kb. For pastes larger than 100 Kb it takes the standard network fee of Arweave.