# 2881099/FreeIM

.NETCore websocket 实现简易、高性能、集群即时通讯组件，支持点对点通讯、群聊通讯、上线下线事件消息等众多实用性功能.

Repository: https://github.com/2881099/FreeIM
Canonical: https://ross.abutalabs.com/products/freeim
Language: C#
License: MIT
License Family: permissive
Last push: 2025-12-18T03:46:44+00:00

## Health v2 (maintenance only)
Score: 48/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 57, release rhythm 8, longevity 100
- inputs: {"age_days": 2977, "days_push": 258, "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 1583, forks 461 (observed 2026-08-28T04:05:07.219495+00:00)

## What it is
FreeIM is a simple, high-performance WebSocket-based instant messaging component for .NET/.NETCore, supporting clustered deployment via Redis. It provides point-to-point messaging, group/channel chat, broadcast messages, and online/offline event notifications.

## Use cases
- add real-time chat to a .NET web app
- build a group chat or chatroom with websocket
- implement live comment streams or live-room messaging
- send point-to-point messages between users
- track user online/offline status events
- scale instant messaging across a cluster of servers
- force a client offline or broadcast messages

## When to choose
- you are building on .NET/.NETCore and need embedded IM capabilities
- you need high connection capacity (50k+ per node) with Redis-based clustering
- you want a simple server that requires no ongoing iteration, with AOT publish support

## When to avoid
- you need a full-featured IM product with friends, red packets, or voice chat out of the box
- your stack is not .NET (the client helper targets .NET Framework 4.5+/NetStandard 2.0)
- you need end-to-end encryption or advanced message persistence built in

## Facets
- artifact type: library
- maturity: active
- function: websocket, message-queue, http-server, middleware
- domain: web-development, backend, chatbots
- platform: dotnet, cross-platform, self-hosted
- tags: instant-messaging, im-server, cluster, group-chat, chat, redis, dotnet-core, live-chat, online-offline-events, messaging, real-time, web-server

## Member repositories
- 2881099/FreeIM (main) score 48

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:07.219495+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 2026-08-30T03:55:59.153020+00:00, confidence not recorded.
  - readme: https://github.com/2881099/FreeIM (fetched 2026-08-28T04:05:07.219495+00:00, sha b429673654f0)
- Data as of 2026-08-30T08:39:29.467469+00:00.