If your organization has HylaFAX running and it works, nobody’s going to tell you to rip it out. Plenty of companies have had it humming for 15+ years on hardware that would otherwise be collecting dust. But if you’re setting up fax infrastructure today — or trying to move from legacy modem-based fax to IP fax — HylaFAX is going to cost you more setup time than it should. ICTFax was built for the current decade: VoIP-native, web interface, T.38, and HIPAA compliance baked in. Here’s how they compare.
Feature Comparison
| Feature | ICTFax | HylaFAX |
|---|---|---|
| Initial release | Modern (2010s) | 1991 (HylaFAX+: maintained fork) |
| Core technology | FreeSWITCH (VoIP-native) | Modem/PSTN-native (Class 2 modems) |
| T.38 fax over IP | Yes (native FreeSWITCH T.38) | Limited (requires additional config) |
| Web interface | Yes (full web UI) | No (command-line; third-party frontends exist) |
| Email-to-fax | Yes | Yes (via hylafax-client + mail agent) |
| Fax-to-email | Yes | Yes |
| Multi-tenant / reseller | Yes | No |
| HIPAA compliance tools | Yes (audit logs, access controls) | No built-in HIPAA features |
| REST API | Yes | No (proprietary HylaFAX protocol) |
| SIP trunk support | Yes (native) | Indirect (via PSTN gateway) |
| Active development | Yes | HylaFAX+ is maintained; HylaFAX original is not |
| Setup complexity | Moderate (web installer) | High (command-line, manual config) |
| Open source | Yes (GPL) | Yes (LGPL) |
The T.38 row is the key technical one. HylaFAX was designed around physical modems — it talks to Class 2 fax modem hardware. Getting it to work cleanly with a SIP trunk and T.38 IP fax requires bridging layers that weren’t part of its original design. ICTFax runs on FreeSWITCH, which handles T.38 natively. If you’re building IP fax infrastructure today, that’s a significant setup difference.
HylaFAX: Where It Still Makes Sense
Legacy environments where it’s already running. HylaFAX’s original protocol — the HylaFAX client-server model — is still supported by a lot of enterprise software. If your document management system, ERP, or print infrastructure sends faxes via the HylaFAX protocol, replacing HylaFAX means touching all of those integrations. Sometimes the pain of migration outweighs the benefits of a modern platform.
HylaFAX+ (the maintained community fork) is also genuinely active. It’s not abandoned. If you have a HylaFAX expert on staff or a consultant who knows it well, the ecosystem still works — HylaFAX+ gets updates, bug fixes, and modern OS support. The problem isn’t that HylaFAX is broken; it’s that getting it configured from scratch in 2026 is harder than it needs to be.
Why IP Fax Teams Should Look at ICTFax First
The web interface alone changes the operational equation significantly. HylaFAX is command-line. There’s no admin panel where you log in and see sent faxes, manage users, or configure fax lines. You use `faxstat`, `sendfax`, and config files. That’s fine if you’re a system administrator who’s comfortable with Unix. It’s a significant burden if you need non-technical staff to send or manage faxes, or if you want to delegate fax management without giving someone shell access to the server.
ICTFax has a web interface where users log in, send faxes by uploading a document and entering a number, and view their fax history. Admins manage accounts, view logs, and configure fax lines from a browser. No command line required for day-to-day operations.
HIPAA is the other major differentiator for healthcare organizations. ICTFax includes audit logging, user access controls, and transmission records that support HIPAA compliance documentation. HylaFAX has no built-in HIPAA compliance features — you’d be building that audit infrastructure yourself on top of server-level logging. For a medical practice or healthcare IT vendor, that difference matters more than almost anything else in this comparison.
The Multi-Tenant Angle
If you’re a service provider or MSP offering fax services to multiple clients, ICTFax supports multi-tenant deployments — separate accounts, separate fax numbers, separate billing, all running from one installation. HylaFAX has no multi-tenant capability. You’d need a separate HylaFAX instance per client, which compounds your server costs and maintenance overhead fast.
For a company that wants to white-label fax services or offer fax-to-email as a hosted product, ICTFax is a practical starting point. HylaFAX isn’t — not without significant custom development on top of it.
Frequently Asked Questions
Is HylaFAX still actively maintained?
HylaFAX+ (the community fork at hylafax.org) is actively maintained with regular releases. The original HylaFAX from iFAX Solutions is essentially unmaintained. If you’re using HylaFAX today, you probably want HylaFAX+ rather than the original, which hasn’t seen significant development in years. Either way, new deployments from scratch in 2026 are unusual — it’s mostly in use at organizations that set it up years ago.
Does ICTFax work with traditional PSTN fax lines, or only VoIP?
ICTFax is VoIP-native — it’s built on FreeSWITCH and connects to SIP trunks for fax over IP (T.38). It doesn’t connect directly to an analog phone line or modem. If you need to send faxes over a traditional PSTN line, you’d need an analog telephone adapter (ATA) or a VoIP gateway between ICTFax and the PSTN. Most modern fax deployments use SIP trunks with T.38 support, which ICTFax handles natively.
What does HIPAA compliance actually mean in the context of a fax server?
For fax to be HIPAA-compliant, you need: access controls so only authorized users can view incoming faxes, audit logs showing who sent and received what and when, encrypted transmission where possible, and the ability to provide documentation if there’s an audit. ICTFax includes these controls — user authentication, transmission logs, and access management are built in. HylaFAX doesn’t have user authentication or audit logging at the application layer; you’d need to build those controls around it at the OS/network level.
How hard is it to migrate from HylaFAX to ICTFax?
The hardest part is usually the integration side — whatever software currently sends faxes via the HylaFAX protocol (CUPS/print driver, document management system, custom scripts) would need to be updated to use ICTFax’s REST API or email-to-fax interface. The server migration itself is straightforward: install ICTFax, configure SIP trunks, set up users. Fax number porting is handled by your SIP trunk provider. Budget time for the integration updates, not the ICTFax installation itself.
Can ICTFax handle high fax volumes for enterprise use?
Yes. ICTFax runs on FreeSWITCH, which is production-proven at carrier scale. The volume ceiling is determined by your SIP trunk’s concurrent channel capacity and server resources, not by ICTFax itself. For high-volume healthcare, legal, or financial services fax environments, it scales without special configuration. HylaFAX scales too — the modem-based architecture actually handles volume well in well-configured environments — but the IP fax path with ICTFax is more straightforward to provision at scale today.
ICTFax is an open source fax server built on FreeSWITCH — web interface, T.38 IP fax, HIPAA compliance tools, and multi-tenant capability. Learn more about ICTFax or see pricing and download options.