Top Open Source Projects using Slack
A curated collection of the 59 best free and open-source projects built using Slack. Discover popular repositories, architecture patterns, and trending software in 2026.
xyd
MITCreate powerful, interactive documentation with hot reloading, TypeScript support, custom components, and built-in API docs generation.
Worklenz
AGPL-3.0Worklenz is a comprehensive project management platform that helps agencies organize tasks, track resources, and boost productivity.
Suna
NOASSERTIONOpen source AI assistant that executes complex tasks from market research to travel planning through natural conversation, with full transparency and community-driven development.
Plasmic
MITOpen-source visual editor for building websites and web apps. Connect to any data source, design custom UIs, and ship production React code without leaving your stack.
Mimrai
AGPL-3.0Open source minimalist task management tool with AI companion that filters noise, automates coordination, and guides teams through complexity with calm focus.
LiteLLM
NOASSERTIONActs as a unified proxy across 100+ LLMs, normalizing them to the OpenAI format while handling virtual keys, budgets, rate limits, fallbacks, and cost tracking.
Home Assistant
Apache-2.0Open source home automation platform supporting 1000+ devices with local control, powerful automations, custom dashboards, and voice assistant. No cloud required.
Inbox Zero
NOASSERTIONAutomates Gmail and Outlook with AI-drafted replies, bulk unsubscribe, cold email blocking, attachment filing, and inbox analytics for individuals and teams.
Flowglad
NOASSERTIONConnects client data across tools, automates recurring accounting workflows, and maintains a self-updating knowledge base with human approval controls.
Databuddy
AGPL-3.0Get powerful web analytics with zero cookies, 100% GDPR compliance, and full data ownership. Lightweight 3KB script delivers real-time insights without compromising user privacy.
Beam
AGPL-3.0Run GPU inference, task queues, and sandboxes on serverless infrastructure with sub-second cold starts, autoscaling, and support for your own AWS, GCP, or bare metal.
Activeloop
Apache-2.0Continual Learning Infrastructure for AI Agents
VerifyWise
NOASSERTIONOpen-source AI governance platform helping teams meet regulatory standards like EU AI Act and ISO 42001. Monitor model performance, manage risks, and maintain compliance with enterprise-grade security.
Uptrace
AGPL-3.0Uptrace is an OpenTelemetry-based platform that integrates traces, metrics, and logs to help monitor and optimize complex distributed systems.
Twenty
NOASSERTIONSelf-hostable CRM built for technical teams who need a fully customizable, extensible platform without vendor lock-in or proprietary tooling.
Trigger
Apache-2.0Open source TypeScript platform for building and deploying AI agents and background workflows with retries, queues, observability, and elastic scaling.
Trench
MITOpen source analytics platform built on ClickHouse and Kafka, offering high-speed event tracking and real-time querying capabilities.
ToolJet
AGPL-3.0Open-source low-code platform for creating custom internal tools, dashboards, and admin panels with a drag-and-drop interface
Hercules
AGPL-3.0Hercules is the first open-source testing agent, enabling zero-code, zero-maintenance UI, API, security, accessibility, and visual validations.
Tabby
NOASSERTIONSelf-hosted AI coding assistant that enhances productivity with context-aware suggestions and privacy-focused implementation.
Superset
NOASSERTIONmacOS app that orchestrates multiple AI coding agents simultaneously, each in its own isolated Git worktree, so you can work on many tasks at once.
Storj
AGPL-3.0Storj offers a distributed cloud storage platform with enhanced security, global performance, and significant cost savings compared to traditional providers.
Sequin
MITSequin offers a feature-rich messaging system with a simple HTTP API, providing RabbitMQ-like functionality without adding complexity to your stack.
Rocket.Chat
NOASSERTIONOpen source communication platform combining messaging, voice, video, and AI for organizations that need full data control, air-gapped deployments, and zero-trust security.
Pipeshub
Apache-2.0Self-hostable enterprise AI platform that unifies business data across apps, powers a knowledge graph for cited answers, and lets teams build AI agents across their stack.
Payload
MITA powerful, flexible, and developer-friendly content management system that prioritizes customization and scalability.
Orbital
NOASSERTIONAutomated data integration platform that connects APIs, databases, and event streams using semantic schemas. Deploy secure integrations in minutes with Git-based workflows.
OpenStatus
AGPL-3.0Open-source status page and uptime monitor that tracks endpoints from 28 global regions, communicates incidents, and helps satisfy SOC 2 audit requirements.
OpenReplay
NOASSERTIONOpen-source session replay and product analytics platform you can self-host for complete control over data security, privacy, and compliance.
Novu
NOASSERTIONOpen-source platform for building in-app, email, push, SMS, and chat notifications with a unified API, workflow engine, and embeddable inbox component.
NocoDB
NOASSERTIONConvert any database into a no-code platform with spreadsheet interface. Connect PostgreSQL/MySQL or use hosted database. Scale to millions of rows effortlessly.
Midday
AGPL-3.0All-in-one tool for freelancers and small businesses to manage finances, track time, store files, and send invoices efficiently.
Metabase
NOASSERTIONOpen-source business intelligence platform for data exploration, visualization, and sharing. Empowers teams to make data-driven decisions effortlessly.
Linky
MITBuild a dynamic link-in-bio page with a drag-and-drop editor. Integrate platforms to showcase live content and connect with your audience.
Lightdash
NOASSERTIONSelf-serve analytics platform that transforms dbt models into interactive dashboards, enabling data-driven decisions across organizations.
Latitude
MITOpen-source platform for monitoring AI agents: captures traces, surfaces failure patterns, alerts on issues, and helps you verify fixes with automated evals.
Langfuse
NOASSERTIONLangfuse provides tracing, evaluations, prompt management, and analytics to debug and improve LLM applications.
Keyshade
MPL-2.0Secure secret management platform with public key encryption, automated rotation, versioning, and real-time collaboration tools for development teams.
Keep
NOASSERTIONOpen-source platform for centralizing alerts, automating responses, and enhancing incident management across your tech stack.
Jitsu
MITCollect, transform, and sync data across your entire infrastructure with a flexible, code-based approach to data integration.
Infisical
NOASSERTIONEnd-to-end encrypted secret management platform for seamless integration and enhanced security in development workflows.
Hyperswitch
Apache-2.0A unified payment infrastructure that connects multiple payment processors through a single API integration, enabling global payment processing
Unleash
AGPL-3.0A powerful feature management platform enabling gradual rollouts, A/B testing, and seamless integration for continuous delivery.
Flexprice
AGPL-3.0A flexible billing platform that handles usage-based metering, credit management, and subscription billing, giving developers full control over pricing models.
Dub Partners
NOASSERTIONRun affiliate, influencer, and referral programs with flexible reward structures, real-time attribution, and automated global payouts.
Dub Links
NOASSERTIONLink management platform for marketing teams with custom domains, UTM builder, A/B testing, geo-targeting, QR codes, and real-time conversion analytics.
Cozystack
Apache-2.0Transform bare metal servers into a complete cloud platform with REST API for Kubernetes clusters, databases, VMs, and load balancers. Build your own cloud.
Apache Cloudberry
Apache-2.0Leverage advanced analytics with a modern PostgreSQL kernel. 100% open source for robust data solutions.
Marble
NOASSERTIONAn open-source platform that enables fintech companies to monitor transactions and user activity, detect suspicious behaviors, and automate fraud prevention in real-time.
Chartbrew
NOASSERTIONA powerful, open-source platform for building interactive dashboards and charts from multiple data sources without coding.
Budibase
NOASSERTIONLow-code platform for creating custom business applications quickly. Design, automate, and deploy with ease.
Pearl
Apache-2.0Connect all your apps through Pearl, an AI assistant that automates workflows directly in Slack. No coding required - save 10+ hours weekly with intelligent task automation.
Betterlytics
AGPL-3.0GDPR-compliant web analytics with real-time insights, session replay, and funnel tracking. No cookies, no tracking, no consent banners required.
Arize Phoenix
NOASSERTIONOpen-source platform for LLM tracing, evaluation, and optimization. Features automatic instrumentation, prompt playground, and real-time AI application monitoring.
Argos
MITAutomate visual testing, catch UI bugs early, and collaborate effortlessly with your team to maintain pixel-perfect interfaces.
Azimutt
MITAzimutt is a powerful tool for seamlessly exploring, documenting, and optimizing large and complex databases.
Agenta
NOASSERTIONOpen-source LLMOps platform providing prompt management, evaluation, and observability tools for building robust AI applications with team collaboration.
Envoy AI Gateway
Apache-2.0Open source gateway built on Envoy for routing application traffic to GenAI services. Supports 16+ LLM providers including OpenAI, Anthropic, AWS Bedrock.
Elasticsearch
NOASSERTIONElasticsearch is an open-source, RESTful search engine designed for scalability, reliability, and easy management.
