ITFlow is a free, open-source, self-hosted all-in-one PSA for small managed service providers that unifies client, contact, vendor, asset, license, domain, SSL certificate, password, documentation, file, network, and location management with ticketing, billing, and a client portal.

What it is

ITFlow is a PHP application, licensed under GPL-3.0, published at itflow.org, and distributed as a comprehensive documentation, ticket management, and accounting platform. It consolidates the documentation, ticketing, and billing functions that a managed service provider needs into one unified platform that the operator controls, covering clients, contacts, vendors, assets, licenses, domains, SSL certificates, passwords, documentation, files, networks, and locations. It has 1004 stars, 260 forks, and 0 open issues, and the project has had a stable release since January 2025.

The problem it solves is stated plainly in the README. A small but busy MSP has information about clients that is unorganised, unstructured, and outdated, and spends longer looking for the relevant documentation than working on the issue or project. On top of that, MSP tools can be expensive, with recurring licensing costs that add up quickly, and the financial side of the business still needs consistent pricing, quotes, invoicing, and accounting. ITFlow replaces that split between paid MSP tooling and disconnected documentation with a single free platform, and it also replaces the manual, scattered record keeping by keeping assets, contacts, domains, docs/files, passwords, and tickets in one place.

Key capabilities

• Client documentation covering assets, contacts, domains, docs/files, passwords, and tickets in one record per client.
• Ticketing for day-to-day service work, integrated with the same client records rather than held in a separate system.
• Billing with quotes, invoices, and expenses, plus Stripe integration for online payments.
• Alerting for domain and SSL expiry and renewals.
• Client Portal for self-service quote, invoice, and ticket management by the client.
• Asset lifecycle, license, domain, SSL certificate, password, documentation, file, network, and location management, as reflected in the project topics.
• CRM-adjacent records including lead management and estimates, alongside contact management and invoicing.

Who uses it and how

• Small but busy managed service providers that need documentation, ticketing, and billing in one system without per-seat licensing costs.
• Self-hosters running the platform on their own Ubuntu or Debian server, using the install script as the recommended path.
• Providers that want client-facing self-service, using the Client Portal so clients manage their own quotes, invoices, and tickets.
• Businesses that need the financial workflow covered in the same tool, from consistent pricing through quotes and invoices to accounting.
• Evaluators can inspect the hosted demo with username [email protected] and password demo before committing to an install.

Getting started

The recommended installation method is the install script on Ubuntu or Debian, run as wget -O itflow_install.sh https://github.com/itflow-org/itflow-install-script/raw/main/itflow_install.sh followed by bash itflow_install.sh, with a video walkthrough and other manual installation methods documented at docs.itflow.org. Managed hosting is offered at services.itflow.org/hosting.php and is marked coming soon.

How it compares

The facts provided do not name any specific paid products that ITFlow replaces, so it stands alone in this registry. The README contrasts it generally with MSP tools that carry recurring licensing costs, positioning ITFlow as a free and open-source alternative under the GPL that the operator hosts and controls, rather than a subscription product.

When to use it — and when not to

A self-hoster must operate the server and the platform, using the install script or the manual installation methods in the documentation, and must accept the project's own caution that no system is risk-free, that nearly all software has bugs, and that judgement is needed before storing highly confidential information in it. Teams that need vendor-supported managed hosting today should wait, because managed hosting is listed as coming soon, and teams that depend on contributing code upstream should note that the project has temporarily paused pull requests from the community. The README is honest about scope and the demo credentials are public, which makes evaluation easy but also means the security posture deserves an operator's own review.

  wget -O itflow_install.sh https://github.com/itflow-org/itflow-install-script/raw/main/itflow_install.sh
  bash itflow_install.sh