Functional, effectful, concurrent streams for Scala

Artifacts using Fs2 Core (844)
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Support for IO operations in the fs2 ecosystem
Last Release on Mar 13, 2026
Core http4s library for servers and clients
Last Release on Apr 10, 2026
ZIO integrates with Typelevel libraries by providing an instance of Concurrent, Temporal and Async for Task as required, for instance, by fs2, doobie and http4s.
Last Release on Dec 20, 2025
fs2-reactive-streams
Last Release on Mar 13, 2026
Scala GraphQL implementation
Last Release on Apr 13, 2026
Tagless, non-blocking data access library for Postgres.
Last Release on Apr 15, 2026
geographic data processing library for high performance applications
Last Release on Apr 23, 2025
fs2-kafka
Last Release on Oct 24, 2025
core
Last Release on Jan 25, 2024
trace4cats-core
Last Release on Feb 11, 2024