Open Source Projects using Slack
A curated collection of the 61 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.
Turn any website into clean, AI-ready data via API
Stars
176,478Last commit
5 hours agoLicense
AGPL-3.0
API for AI agents to search, scrape, crawl, and interact with the live web, returning clean Markdown, structured JSON, or screenshots from any page.
Open Source Alternative to:
Schedule, analyze, and manage 30+ social media accounts
Stars
35,457Last commit
16 hours agoLicense
AGPL-3.0
Self-hostable social media scheduler that lets you plan, generate, and publish content across 30+ networks with AI assistance, team collaboration, and automation integrations.
Open Source Alternative to:
Affiliate marketing platform built for SaaS companies
Stars
24,667Last commit
5 hours agoLicense
AGPL-3.0
Run affiliate, influencer, and referral programs with flexible reward structures, real-time attribution, and automated global payouts.
Open Source Alternative to:
Continuous compliance automation for SOC 2, ISO 27001 & more
Stars
299Last commit
13 hours agoLicense
Apache-2.0
Automates evidence collection, control tracking, and audit reporting across SOC 2, ISO 27001, NIST 800-53, GDPR, and 12+ other frameworks in one platform.
Open Source Alternative to:
An AI assistant that acts, not just answers
Stars
388,853Last commit
5 hours agoLicense
MIT
A personal AI assistant that connects to your existing chat apps and handles real tasks like email, calendar, and flight check-ins on your behalf.
Open Source Alternative to:
Desktop AI agent with persistent memory across platforms
Stars
241,395Last commit
5 hours agoLicense
MIT
Cross-platform desktop agent from Nous Research that connects to Telegram, Discord, Slack, WhatsApp, and more, with persistent memory, scheduling, and isolated sandboxing.
Open Source Alternative to:
AI coding agent for terminal, IDE, and desktop
Stars
204,005Last commit
5 hours agoLicense
MIT
Open source AI coding agent that works in your terminal, IDE, or desktop app, supporting 75+ LLM providers with no code storage.
Open Source Alternative to:
Docs, whiteboards, and databases in one privacy-first workspace
Stars
72,190Last commit
16 hours agoLicense
MIT
An open-source, local-first knowledge base that merges structured docs, infinite whiteboards, databases, and AI into a single workspace for teams and creators.
Open Source Alternative to:
Persistent memory layer for AI agents and apps
Stars
64,709Last commit
8 hours agoLicense
Apache-2.0
Adds persistent, searchable memory to AI agents and apps, so they remember user preferences and past interactions across sessions without pipeline changes.
Open Source Alternative to:
Unlock data insights with powerful, user-friendly analytics
Stars
49,094Last commit
5 hours agoLicense
Unknown
Open-source business intelligence platform for data exploration, visualization, and sharing. Empowers teams to make data-driven decisions effortlessly.
Open Source Alternative to:
Open source LLM engineering platform for AI-powered applications
Stars
34,205Last commit
5 hours agoLicense
MIT
Langfuse provides tracing, evaluations, prompt management, and analytics to debug and improve LLM applications.
Open Source Alternative to:
Omnichannel customer support with a built-in AI assistant
Stars
36,497Last commit
14 hours agoLicense
MIT
Manage customer conversations across live chat, email, WhatsApp, Instagram, and more from one inbox, with an AI assistant that suggests replies and automates common questions.
Open Source Alternative to:
Open-source vector database for AI search and retrieval
Stars
29,226Last commit
1 day agoLicense
Apache-2.0
Open-source vector database designed for AI applications. Store, search, and retrieve embeddings with semantic similarity matching and metadata filtering.
Open Source Alternative to:
Multi-model AI workspace with org-wide skill sharing
Stars
23,325Last commit
5 hours agoLicense
MIT
Desktop app for teams to run AI agents across 50+ LLMs, share skills and MCP servers org-wide, and automate browser tasks with your own keys.
Open Source Alternative to:
Secure secret management for modern development teams
Stars
29,115Last commit
5 hours agoLicense
MIT
End-to-end encrypted secret management platform for seamless integration and enhanced security in development workflows.
Open Source Alternative to:
Automate workflows with no-code integration platform
Stars
24,255Last commit
5 hours agoLicense
MIT
Open-source integration platform for seamless workflow automation. Connect apps, automate tasks, and boost productivity effortlessly.
Open Source Alternative to:
Branded short links with analytics and conversion tracking
Stars
24,667Last commit
5 hours agoLicense
AGPL-3.0
Link management platform for marketing teams with custom domains, UTM builder, A/B testing, geo-targeting, QR codes, and real-time conversion analytics.
Open Source Alternative to:
AI agent that autonomously handles real-world tasks
Stars
20,173Last commit
5 hours agoLicense
Apache-2.0
Open source AI assistant that executes complex tasks from market research to travel planning through natural conversation, with full transparency and community-driven development.
Open Source Alternative to:
Self-hosted personal finance manager with double-entry bookkeeping
Stars
24,492Last commit
14 hours agoLicense
AGPL-3.0
Track transactions, budgets, and accounts with a double-entry system, multi-currency support, rule engine, and REST API. Fully self-hostable.
Open Source Alternative to:
Privacy-first knowledge base with any AI model you choose
Stars
16,086Last commit
18 hours agoLicense
Apache-2.0
Self-hostable NotebookLM alternative that lets teams build searchable knowledge bases from diverse sources, with support for any LLM and no data limits.
Open Source Alternative to:
Run dozens of AI coding agents in parallel on your machine
Stars
13,749Last commit
5 hours agoLicense
Elastic-2.0
macOS app that orchestrates multiple AI coding agents simultaneously, each in its own isolated Git worktree, so you can work on many tasks at once.
Open Source Alternative to:
Run long-running AI tasks without timeouts or servers
Stars
16,215Last commit
6 hours agoLicense
Apache-2.0
Open source TypeScript platform for building and deploying AI agents and background workflows with retries, queues, observability, and elastic scaling.
Open Source Alternative to:
Open-source ecommerce platform for WordPress
Stars
10,490Last commit
5 hours agoLicense
GPL-2.0
Build and manage online stores with customizable features, extensions, and themes for businesses of all sizes.
Open Source Alternative to:
Streamline your business finances and operations
Stars
14,952Last commit
3 months agoLicense
AGPL-3.0
All-in-one tool for freelancers and small businesses to manage finances, track time, store files, and send invoices efficiently.
Open Source Alternative to:
Privacy-first survey and experience management platform
Stars
12,888Last commit
8 hours agoLicense
AGPL-3.0
Collect feedback across websites, apps, and emails with targeted surveys, user segmentation, and GDPR-compliant data handling. Self-host or use the cloud.
Open Source Alternative to:
Build powerful AI agents with cutting-edge LLM technology
Stars
14,891Last commit
2 days agoLicense
MIT
A comprehensive platform for creating AI agents with intuitive tools, extensive integrations, and enterprise-grade features powered by the latest language models.
Open Source Alternative to:
Common layer for composing and governing AI agents
Stars
9,691Last commit
5 hours agoLicense
Apache-2.0
Meta-harness that sits above Claude Code, Codex, and other AI agents to add policy enforcement, sandboxing, and real-time collaborative sessions.
Open Source Alternative to:
A certified and battle-tested identity solution
Stars
13,866Last commit
1 month agoLicense
Apache-2.0
Ory is a certified and battle-tested identity solution backed by a large open source community and trusted by Fortune 500 companies.
Open Source Alternative to:
Feature flags for rapid, risk-free software deployment
Stars
13,784Last commit
6 hours agoLicense
AGPL-3.0
A powerful feature management platform enabling gradual rollouts, A/B testing, and seamless integration for continuous delivery.
Open Source Alternative to:
Private meeting notes, no bots, files you own
Stars
9,241Last commit
5 hours agoLicense
MIT
Records system audio without joining your call, then turns rough notes into editable summaries. Audio, transcripts, and notes stay as local files.
Open Source Alternative to:
Free online accounting for small businesses and freelancers
Stars
10,103Last commit
12 hours agoLicense
Unknown
Self-hostable accounting software covering invoicing, expense tracking, cash flow, and client portals. Free to use, available in 50+ languages.
Open Source Alternative to:
Full-stack observability without the enterprise price tag
Stars
9,873Last commit
5 hours agoLicense
MIT
Open source observability platform unifying session replays, logs, traces, metrics and errors. Fast search, automatic clustering, $0.40/GB pricing.
Open Source Alternative to:
Send invoices, accept payments, manage your business—all free
Stars
10,053Last commit
2 days agoLicense
Elastic-2.0
Free invoicing software for freelancers and small businesses. Create professional invoices, track expenses, accept online payments, and manage projects without hidden fees.
Open Source Alternative to:
Status page and uptime monitoring for growing teams
Stars
9,060Last commit
6 hours agoLicense
AGPL-3.0
Open-source status page and uptime monitor that tracks endpoints from 28 global regions, communicates incidents, and helps satisfy SOC 2 audit requirements.
Open Source Alternative to:
Distributed task queue for background jobs and workflows
Stars
7,872Last commit
5 hours agoLicense
MIT
Durable orchestration platform for managing AI agents, scheduling background tasks, and running mission-critical workflows.
Open Source Alternative to:
Get alerted when cron jobs and scheduled tasks miss their run
Stars
10,303Last commit
3 days agoLicense
BSD-3-Clause
Monitors cron jobs, background workers, and scheduled tasks by expecting periodic HTTP pings and alerting you when they stop arriving on time.
Open Source Alternative to:
Real-time observability for modern web applications
Stars
9,372Last commit
15 days agoLicense
Apache-2.0
Comprehensive monitoring solution offering error tracking, session replay, and performance insights for seamless debugging and optimization.
Open Source Alternative to:
Full-stack observability without code changes
Stars
7,907Last commit
5 hours agoLicense
Apache-2.0
Coroot simplifies system monitoring by providing metrics, logs, traces, and profiling with zero instrumentation, leveraging eBPF technology.
Open Source Alternative to:
Build reliable AI apps with comprehensive observability
Stars
6,132Last commit
5 days agoLicense
Apache-2.0
Open-source platform for logging, monitoring, and debugging LLM applications. Route, debug, and analyze AI apps with comprehensive observability tools.
Open Source Alternative to:
Open-source BI for modern data teams
Stars
6,120Last commit
8 hours agoLicense
MIT
Self-serve analytics platform that transforms dbt models into interactive dashboards, enabling data-driven decisions across organizations.
Open Source Alternative to:
Feature flags and remote config for rapid deployment
Stars
6,538Last commit
7 hours agoLicense
BSD-3-Clause
Powerful feature management platform for seamless software releases, A/B testing, and personalized user experiences.
Open Source Alternative to:
Terraform automation with pull request workflows
Stars
5,039Last commit
24 days agoLicense
MIT
Open-source CI/CD orchestrator for Terraform with pull request automation, drift detection, and enterprise-grade security. Self-hostable with private runners.
Open Source Alternative to:
InfluxDB – The purpose-built time series platform for high-velocity ingestion and real-time queries at scale.
Openlane
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