FS2 download | SourceForge.net

FS2 (“Functional Streams for Scala”) is a purely functional, effectful abstraction for stream processing on the JVM. Built on Cats Effect, it enables compositional resource-safe streaming workflows with robust error handling, back-pressure, pull/push semantics, and support for concurrent and interruptible pipelines.

Features

Purely functional streams with Cats Effect integration
Safe resource acquisition and disposal using compile-time guarantees
Composable concurrent pipelines with back-pressure support
Pull/homeostasis and push models unified in a single API
Support for streaming connectors (e.g. HTTP via fs2-http, RabbitMQ, MQTT)
Designed for efficient Scala code on both Scala 2 & Scala 3

Project Samples

Project Activity

See All Activity >

License

MIT License

Follow FS2

FS2 Web Site

Other Useful Business Software

Failed Payment Recovery for Subscription Businesses

For subscription companies searching for a failed payment recovery solution to grow revenue, and retain customers.

FlexPay’s innovative platform uses multiple technologies to achieve the highest number of retained customers, resulting in reduced involuntary churn, longer life span after recovery, and higher revenue. Leading brands like LegalZoom, Hooked on Phonics, and ClinicSense trust FlexPay to recover failed payments, reduce churn, and increase customer lifetime value.

Learn More

Rate This Project

User Reviews

Be the first to post a review of FS2!

Additional Project Details

Programming Language

Scala

Related Categories

Scala Libraries

Registered

2025-08-04

Similar Business Software

BullMQ

BullMQ is a Node.js library that implements a fast and robust queue system built on top of Redis, designed to address various challenges in modern microservices architectures. It is structured around four primary classes. BullMQ offers features like minimal CPU usage due to a polling-free...

See Software
DHTMLX

DHTMLX is a JavaScript UI library that provides a set of highly customizable and flexible components for building modern and responsive web applications. The library includes more than 30 UI components, such as Gantt, Scheduler, Kanban, diagrams, charts, grids, spreadsheets, calendars, trees,...

See Software
Bryntum

Bryntum is a leading provider of high-performance scheduling solutions for the web. Our suite of JavaScript components—including Gantt, Scheduler, Task Board, and Calendar—enables developers to build modern project management applications with features like drag-and-drop scheduling, resource...

See Software
Webix

JavaScript UI library and framework for speeding up web development. JS Framework for cross-platform web Apps development 102 UI widgets and feature-rich CSS / HTML5 JavaScript controls. Save at least 3000+ development hours by using ready-made widgets and UI controls. Develop Web UI 30% faster....

See Software
FusionCharts

FusionCharts is a powerful and easy-to-use JavaScript charting library that helps developers to add interactive charts and data visualizations to their web and mobile applications. With 100+ chart types, including column, bar, line, area, pie, doughnut, scatter, bubble, and more, it's easy to...

See Software
Dexie

Dexie.js is a minimalistic and bulletproof IndexedDB wrapper library designed to simplify client-side storage. At only ~29k minified and gzipped, it offers a concise API that addresses the complexities of native IndexedDB, such as ambivalent error handling, poor queries, lack of reactivity, and...

See Software