Top Open Source Projects using Slack

A curated collection of the 31 best open source software using Slack. Find the most popular and trending open source projects to learn from, contribute to, or use in your own projects.

OpenClaw

An open source AI assistant that runs on your own hardware and reaches you through Discord, Slack, WhatsApp and other chat channels.

Alternative to:

ChatGPT

An AI assistant that acts, not just answers

Stars
389,062
Forks
81,758
Last commit
5 days ago

Affine

An all-in-one workspace merging documents, whiteboards and databases, built local-first for teams that want to own their knowledge base.

Alternative to:

Notion

Docs, whiteboards, and databases in one privacy-first workspace

Stars
72,242

CopilotKit

SDK for developers building agent-native apps, adding chat, generative UI, shared state and human-in-the-loop across web, mobile and chat platforms.

Alternative to:

Voiceflow

Build AI copilots for your product in hours, not months

Stars

Novu

Open-source communication infrastructure that sends product notifications and connects agents to Inbox, email, SMS, push, chat and messaging channels.

Alternative to:

OneSignal

Multi-channel notification infrastructure for apps

Stars
39,876

Langfuse

LLM engineering platform where teams trace, evaluate, debug and version-control the prompts and runs behind an AI application.

Alternative to:

LangSmith

Open source LLM engineering platform for AI-powered applications

Stars
34,268

Infisical

Secret management platform for engineering teams, reaching into certificates, key management and privileged access from one self-hostable place.

Alternative to:

AWS Secrets Manager

Secure secret management for modern development teams

Stars

ActivePieces

Extensible automation platform and Zapier replacement where every integration is a typed TypeScript package that doubles as an MCP server.

Alternative to:

Zapier

Automate workflows with no-code integration platform

Stars
24,300

Budibase

Operations platform for building internal apps, automations and AI agents on top of the databases a business already runs.

Alternative to:

Retool

Build powerful web apps without complex coding

Stars
28,260

Firefly III

Self-hosted personal finance manager with double-entry bookkeeping, budgets and reports, for tech-savvy people keeping their records off the cloud.

Alternative to:

Monarch Money

Self-hosted personal finance manager with double-entry bookkeeping

Stars

WooCommerce

Ecommerce plugin that turns a WordPress site into a store, aimed at developers extending and customizing the platform themselves.

Alternative to:

Shopify

Open-source ecommerce platform for WordPress

Stars
10,493

Superset

Desktop app that runs many CLI coding agents in parallel, each in its own git worktree, for developers juggling tasks.

Alternative to:

Omnara

Run dozens of AI coding agents in parallel on your machine

Trigger

TypeScript platform for long-running background tasks and AI workflows, with retries, queues and observability, cloud or self-hosted.

Alternative to:

AWS Step Functions

Run long-running AI tasks without timeouts or servers

Stars

Midday

All-in-one business assistant for freelancers and solo operators, pulling time tracking, receipts, file storage and reporting together.

Alternative to:

FreshBooks

Streamline your business finances and operations

Stars
14,959

Botpress

Chatbot and assistant platform with a CLI, SDK and integration hub, for developers shipping conversational products on Botpress Cloud.

Alternative to:

Voiceflow

Build powerful AI agents with cutting-edge LLM technology

Stars
14,893

Inbox Zero

An AI email assistant that organizes your inbox, pre-drafts replies and unsubscribes in bulk, for anyone losing hours to email.

Alternative to:

Superhuman

AI email assistant that automates, organizes, and declutters

Stars
12,158

Unleash

A feature flag service for teams that want to ship code to production in small releases and control rollout.

Alternative to:

LaunchDarkly

Feature flags for rapid, risk-free software deployment

Stars
13,787

Akaunting

Online accounting software for small businesses and freelancers, self-hosted on ordinary PHP hosting with a modular app store for extensions.

Alternative to:

FreshBooks

Free online accounting for small businesses and freelancers

Stars

Invoice Ninja

Invoicing and payment software for freelancers and small businesses, available hosted or self-hosted with every paid feature in the source.

Alternative to:

FreshBooks

Send invoices, accept payments, manage your business—all free

Stars

OpenStatus

Status pages and uptime monitoring in one open source platform, for teams that would rather not wire two tools together.

Alternative to:

UptimeRobot

Status page and uptime monitoring for growing teams

Stars
9,072

Helicone

An AI gateway and observability platform that logs LLM requests, tracks cost and latency, and routes across providers for AI engineers.

Alternative to:

LangSmith

Build reliable AI apps with comprehensive observability

Stars
6,133

Latitude

Observability platform for AI agents that traces every run, groups failures into tracked signals, and dispatches coding agents to fix them.

Alternative to:

LangSmith

Full observability for AI agents in production

Stars
4,632

OpnForm

Open source no-code form builder for teams that want unlimited forms and submissions on their own infrastructure instead of a hosted tool.

Alternative to:

Typeform

Create powerful forms with ease and flexibility

Stars
3,678

Chartbrew

Web application that connects to your databases and APIs and turns the data into charts, dashboards and embeddable visualizations for a team.

Alternative to:

Microsoft Power BI

Create stunning data visualizations with ease

Stars

Worklenz

A project management tool for organizations that want tasks, time tracking and workload reporting running on their own infrastructure.

Alternative to:

Asana

Open source agency management tool for streamlined success

Stars
3,162

Storj

S3-compatible cloud storage on a distributed network, for anyone who wants files encrypted and spread across many machines rather than one datacenter.

Alternative to:

Amazon S3

Secure, decentralized cloud storage for your data

Stars
3,278

Autumn

A billing layer over Stripe that lets developers ship subscriptions, credits and usage-based pricing through three function calls instead of webhooks.

Alternative to:

Stripe Billing

Stripe payments, usage tracking, and paywalls in 3 functions

Stars

Databuddy

Analytics and data management platform with real-time dashboards, funnels and custom event tracking, self-hostable with Docker Compose.

Alternative to:

Google Analytics

Privacy-first analytics without cookies or tracking

Stars

Linky

Link-in-bio page builder whose blocks pull live content from Spotify, Instagram, TikTok and GitHub, for creators tired of stale pages.

Alternative to:

Linktree

A delightfully rich and dynamic link-in-bio.

Stars
795

Hive

Schema registry and analytics platform for GraphQL federation, available as a managed cloud service or self-hosted on your own infrastructure.

Alternative to:

Apollo GraphOS

Open-source GraphQL federation platform

Stars
484

Roomote

Self-hosted cloud coding agent that takes tasks from Slack or Teams, works in a sandbox and opens a pull request.

Alternative to:

GitHub Copilot

Self-hosted AI coding agent that opens real PRs

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Top Open Source Projects using Slack

A curated collection of the 31 best open source software using Slack. Find the most popular and trending open source projects to learn from, contribute to, or use in your own projects.

OpenClaw

Affine

CopilotKit

Novu

Langfuse

Infisical

ActivePieces

Budibase

Firefly III

WooCommerce

Superset

Trigger

Midday

Botpress

Inbox Zero

Unleash

Akaunting

Invoice Ninja

OpenStatus

Helicone

Latitude

OpnForm

Chartbrew

Worklenz

Storj

Autumn

Databuddy

Linky

Hive

Roomote

Browse categories of tools using Slack:

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Browse categories of tools using Slack:

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack

Best using Slack