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ProjectLighthouse
Project Lighthouse is a clean-room, open-source custom server for LittleBigPlanet.
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
Not with online sadly. RPCS3 does not have fully implemented raw socket functionality to allow LBP1-3s P2P multiplayer to work. You can still privately host https://github.com/LBPUnion/ProjectLighthouse to restore much of the online functionality such as profiles and uploading levels. However, if you patch your copy of the game on a modded PS3 to look for your server instead of the official ones it should be able to matchmake for multiplayer.
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a more popular project.