Best Self-hosted Business Software tools in 2026

Lowdefy is a config-driven web framework for building internal tools, admin panels, dashboards, CRUD apps, and client portals using YAML or JSON with extensible plugins.

Apache-2.0Actively maintained

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Retool+8

Shelf.nu is an open-source IT and equipment asset management system with QR code tagging, searchable inventory, team collaboration, and reservations to avoid double bookings.

Developer-focused platform for automated, omnichannel messaging (email, SMS, push, WhatsApp) with low-code journeys, segmentation, templates, and self-hosting.

MITActively maintained

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Customer.io+19

Open source Splitwise alternative to track shared group expenses, balances, reimbursements, categories, and receipt attachments, with optional AI receipt scanning.

MITActively maintained

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Splitwise+2

Modern open-source help desk for managing customer conversations with shared inboxes, automation rules, CSAT surveys, roles/permissions, and API/webhooks.

AGPL-3.0Actively maintained

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Zendesk+19

Self-hosted web application to track and manage 3D-printing filament spools with a REST API, WebSocket updates, label/QR printing and integrations for common printer frontends.

MITActively maintained

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SimplyPrint+6

Open-source customer engagement and product onboarding platform for building event-triggered journeys and sending email, SMS, push notifications, and webhooks.

Actively maintained

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Braze+9

Loomio is a collaborative decision-making tool for group discussions, proposals, and polls, helping teams make transparent decisions asynchronously with a clear record.

AGPL-3.0Actively maintained

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Diligent Boards+16

Fava is a web interface for Beancount that helps you view, analyze, and manage plain-text double-entry accounting with reports, charts, and queries.

MITActively maintained

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Quicken+14

Open-source task and chore manager for individuals and groups featuring natural-language scheduling, assignee rotation, NFC triggers, REST API, and S3-compatible storage.

AGPL-3.0Actively maintained

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Todoist+19

Open-source ticket shop and event registration software with online sales, box office mode, multilingual support, and extensible plug-ins and API.

Actively maintained

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Eventbrite+10

Self-hostable user onboarding platform to build in-app product tours, checklists, launchers, and surveys with targeting, versioning, and analytics.

Actively maintained

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Userflow+1

Self-hosted live chat and customer support platform with website widgets, operator console, chatbots, omnichannel integrations, and optional voice/video/screensharing.

Apache-2.0Actively maintained

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Zendesk+19

Keila is an open-source newsletter tool for creating email campaigns, managing contacts and segments, building signup forms, and sending via SMTP or email providers.

AGPL-3.0Actively maintained

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Mailchimp+17

Open source agile project management tool with Scrum and Kanban boards, issue tracking, backlog planning, and team collaboration features.

MPL-2.0Slowing down

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Atlassian Jira+19

Corteza is an open-source low-code platform to build CRM-style apps, structured data systems, and automated business workflows with a strong API-first design.

Apache-2.0Actively maintained

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Microsoft Power Apps+19

Open-source emailing platform for newsletters and transactional emails with a visual MJML builder, segmentation, A/B testing, analytics, and a REST API with webhooks.

AGPL-3.0Actively maintained

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Mailchimp+19

Self-hostable POI map tracker and trip planner to manage points of interest, build multi-day itineraries, and collaborate with travel companions without ads or telemetry.

MITActively maintained

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Wanderlog+3

Open-source invoicing app built with Laravel & Vue. Provides invoices, estimates, expense tracking, REST API, customizable PDF templates and self-hosting documentation.

AGPL-3.0Actively maintained

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Invoice Ninja+9

MantisBT is a free web-based issue tracker for managing bugs, tasks, and projects with customizable workflows, email notifications, and role-based access control.

Actively maintained

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Atlassian Jira+7

Open-source web app to manage electronic component inventory with projects/BOMs, barcode labels, fine-grained permissions, and powerful search.

AGPL-3.0Actively maintained

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inFlow Inventory+11

Open-source, self-hosted tournament system for creating and managing Swiss, single‑elimination and round‑robin tournaments with scheduling, dashboards, team/club management and CSV import.

AGPL-3.0Actively maintained

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Challonge+4

Self-hosted open-source billing, invoicing, payments, and client management platform for hosting and online service businesses.

Apache-2.0Actively maintained

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WHMCS+12

ZenTao is an open source project management system for agile teams, combining product planning, Scrum/Kanban execution, bug tracking, testing, docs, and reporting.

Actively maintained

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Jira Software+19

Open-source self-hosted app to manage, track and journal houseplants with locations, tasks, inventory, calendar, reminders, group chat and plant identification.

MITActively maintained

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Planta+2

Open-source low-code platform to build internal tools and customer-facing web apps with a visual UI builder, reusable modules, data-source connectors, and RBAC.

AGPL-3.0Slowing down

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Retool+13

Next-generation open-source CRM for managing contacts, companies, tasks, and sales opportunities with a modern UI and customizable fields.

AGPL-3.0Actively maintained

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Salesforce Sales Cloud+18

Self-hosted open-source ad serving platform to manage campaigns, deliver targeted ads, and track impressions, clicks, and conversions with reporting.

GPL-2.0Actively maintained

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Google Ads+6

Socioboard is an open-source social media management platform for publishing, scheduling, team collaboration, RSS content curation, and analytics/reporting across multiple networks.

Actively maintained

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Hootsuite+11

Accent is an open-source translation management tool for apps, providing a web UI, CLI, and GraphQL API to manage i18n strings with review history and collaboration.