kibō (hope in japanese) is primarily an open source Bitcoin Core data extractor and visualizer (similar to Glassnode) which goal is to empower anybody with data about Bitcoin for free.
The project is split in 3 parts:
First you have the extractor (parser), which parses the block data files from your Bitcoin Core node and computes a very wide range of datasets which are stored in compressed binary files
For the curious, it takes at the very least 24 hours to parse all the blocks and compute all datasets. After that it will wait for a new block and take between 1 and 3 minutes to be up to date
Then there is the website on which you can view, among other things, all datasets in various charts
Finally there is the server which serves the website and the generated data via an API
Whether you're an enthusiast, a researcher, a miner, an analyst, a trader, a skeptic or just curious, there is something for everyone !
This project was created out of frustration by all the alternatives that were either very expensive and thus discriminatory and against bitcoin values or just very limited and none were open-source and verifiable. So while it's not the first tool trying to solve these problems, it's the first that is completely free, open-source and self-hostable.
If you are a user of mempool.space, you'll find this to be very complimentary, as it offers a macro view of the chain over time instead of a detailed one.