# WallarooLabs/wally

Distributed Stream Processing

Repository: https://github.com/WallarooLabs/wally
Canonical: https://ross.abutalabs.com/products/wally
Homepage: https://www.wallaroolabs.com
Language: Pony
License: Apache-2.0
License Family: permissive
Topics: stream-processing, stream-processor, stream-processing-engine, pony-language, python, linux, golang, go, framework, api
Last push: 2021-04-06T15:27:03+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3899, "days_push": 1975, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1482, forks 66 (observed 2026-08-28T04:04:51.131137+00:00)

## What it is
Wally (formerly Wallaroo) is a fast, distributed stream-processing framework written in Pony that handles distributed computing plumbing so developers can focus on business logic. It provides high-performance, low-latency real-time data processing with managed in-memory state and live scaling.

## Use cases
- process real-time data streams
- build distributed stream processing pipelines
- run stateful event processing with low latency
- scale a live data processing application without downtime
- react to incoming data in real time
- deploy stream processing on-prem or in the cloud

## When to choose
- you need high-performance, low-latency stream processing with managed in-memory state
- you want to write stream processing apps in Pony or Python without managing distributed infrastructure
- you need live, elastic scaling of running data pipelines

## When to avoid
- your team has no experience with the Pony language, which is the primary API
- you need a mainstream ecosystem with large community support like Kafka Streams or Flink
- the project has seen no releases since 2021 and you need actively maintained software

## Facets
- artifact type: framework
- maturity: maintenance
- function: streaming, workflow-automation, api-framework
- domain: big-data, microservices
- platform: python, go, cross-platform
- tags: stream-processing, pony-language, distributed-computing, real-time-data, stateful-processing, data-pipelines, data-engineering, real-time, linux

## Member repositories
- WallarooLabs/wally (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:51.131137+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:34:05.421701+00:00, confidence not recorded.
  - readme: https://github.com/WallarooLabs/wally (fetched 2026-08-28T04:04:51.131137+00:00, sha 868ebad50094)
- Data as of 2026-08-30T08:39:29.467469+00:00.