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Top 23 Scala Zio Projects
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Project mention: How I Built an AI-Powered Bounty Hunting System for GitHub Issues | dev.to | 2026-03-19
[2026-03-18T16:00:01.140Z] Bounty Monitor starting... [2026-03-18T16:00:01.143Z] Fetching Algora bounties... [2026-03-18T16:00:01.222Z] Fetching GitHub bounty issues (last 2 hours)... [2026-03-18T16:00:02.089Z] Found 0 GitHub bounties >= $200 in TS/JS/Python [2026-03-18T16:00:03.137Z] Found 11 Algora bounties >= $200 RESULTS: 11 bounties found [SEEN] $5000 — Algora Bounty URL: https://github.com/zio/zio/issues/9356 [SEEN] $4000 — Algora Bounty URL: https://github.com/archestra-ai/archestra/issues/1301 [NEW] $2500 — Algora Bounty URL: https://github.com/golemcloud/golem-cli/issues/275
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Kargo
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zio-http
A next-generation Scala framework for building scalable, correct, and efficient HTTP clients and servers
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Project mention: Izumi: Dependency Injection as immutable DAG transform | news.ycombinator.com | 2025-12-01
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zio-prelude
A lightweight, distinctly Scala take on functional abstractions, with tight ZIO integration
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AppSignal
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zio-schema
Compositional, type-safe schema definitions, which enable auto-derivation of codecs and migrations.
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virgil
A purely functional Cassandra client built on top of the Datastax Java Driver supporting a variety of effect systems like ZIO & Cats-Effect supporting both Scala 2 & 3 (by kaizen-solutions)
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free-arrow
Implementation of the Free Arrow in Scala and other helpful tools for working with Arrows
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
Scala Zio discussion
Scala Zio related posts
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Creating a CLI app with scala and Graal VM: should I switch to Rust?
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Help implementing a `select` method to my zio-channel library which adds Go-like channels to ZIO.
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What is scala's modern Web API framework?
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Sttp: An Extensible API Client
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Akka Fork FUD
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zio-http, any experiences to share
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zio-json got 333 stars!
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A note from our sponsor - AppSignal
www.appsignal.com | 8 Sep 2026
Index
What are some of the best open-source Zio projects in Scala? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | ZIO | 4,415 |
| 2 | tapir | 1,469 |
| 3 | zio-http | 873 |
| 4 | DIStage | 629 |
| 5 | zio-prelude | 472 |
| 6 | zio-json | 431 |
| 7 | ZparkIO | 176 |
| 8 | zio-schema | 166 |
| 9 | rezilience | 164 |
| 10 | tranzactio | 158 |
| 11 | zio-cli | 138 |
| 12 | mongo4cats | 126 |
| 13 | zio-entity | 115 |
| 14 | zio-spark | 55 |
| 15 | fields | 49 |
| 16 | virgil | 41 |
| 17 | cable | 35 |
| 18 | free-arrow | 20 |
| 19 | munit-zio | 18 |
| 20 | zio-temporal-hello | 16 |
| 21 | s2gen | 15 |
| 22 | zio-channel | 14 |
| 23 | redisclient-rate-limit | 8 |
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