Parapet – A purely functional library to build distributed systems
A purely functional library to build distributed and event-driven systems
Parapet – A purely functional library to build distributed systems launched on August 13, 2019 with 51 votes, #758 of 3,185 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 7 years on.
In plain words
Parapet is a functional library designed for building distributed systems. Released in 2019, it provides developers with tools to construct complex, distributed applications using functional programming principles. The library is intended for software engineers working on systems that need to operate across multiple machines or nodes. Its purely functional approach distinguishes it from other distributed systems frameworks by emphasizing immutability and composability in system design.
written from the facts on this page · September 2026
From the sources
Introduction Author : Roman Pleshkov (dmgcodevil) Github : https://github.com/parapet-io/parapet License : Apache License, Version 2.0 It's not a secret that writing distributed systems is a challenging task that can be logically broken into two main aspects: implementing distributed algorithms and running them. Parapet plays the role of execution framework for distributed algorithms - it can be viewed as an intermediate layer between a low-level effect library and high-level operations exposed in the form of DSL . Distributed engineers who mainly focused on designing and implementing distributed algorithms don't need to be worried about low-level abstractions such as IO or have a piece of…from parapet.io
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