It’s official: Arca Noae’s Managing Member, Lewis Rosenthal, is scheduled be live and in person at Warpstock Europe 2025 in Amersfoort, The Netherlands, May 16-18, to speak about Arca Noae, ArcaOS, new features in version 5.1.1, and future plans for the OS.
More information on this informative event is available on the Warpstock Europe website.
It is always gratifying to receive acclaim from our peers and the educated press. It seems that TechRadar has listed ArcaOS as #1 in their list of Best alternative operating systems of 2025, albeit with some slight misstatements in their overview (which we have brought to their attention).
One of the points which is specifically incorrect is the negative notion that ArcaOS is “for older PCs.” ArcaOS 5.1 should install on many or most new or recent Intel or AMD-based hardware. It is capable of booting on UEFI-only systems, without the aid of a CSM, using our proprietary 64-bit UEFI loader, and then booting ArcaOS (which itself is 32-bit) just as it would on a traditional BIOS system.
ArcaOS 5.1 also supports booting from GPT partitioned media, making it a great companion OS for multiboot configurations where the disk (or SSD) has already been partitioned this way and where it may be impractical to wipe and convert to MBR-style partitioning.
In fact, it is also something to note that ArcaOS is specifically not intended for use on “older” hardware, such as ISA, EISA, or MicroChannel, as most of the device drivers for those architectures were removed from ArcaOS prior to its initial release.
Another misstatement in the article pertained to pricing which quoted figures for licensing of the 5.0 release which itself is no longer available (though support for 5.0 continues with no stated EOL). Also, if you already have an ArcaOS 5.0 license, generous upgrade discounts apply should you want to move up to ArcaOS 5.1.
Warpstock 2024 begins this Friday, September 27, at 9am EDT.
Lewis Rosenthal and Alex Taylor will be among those presenting this year on a variety of topics of interest concerning ArcaOS. In addition, Lewis will be moderating a 2-part roundtable discussion focused on how people are using the OS/2 platform today, and how they see themselves using it in the future. For more details and for info on all sessions, please visit the event sessions page, and for the complete schedule, visit the event calendar.
Questions may be posed via YouTube Chat as well as IRC during the event.
The WarpEvents YouTube channel is the place to watch the event stream.
The URL for the #Warpstock IRC channel is: ircs://irc.libera.chat:6697/Warpstock (TLS encrypted),
or irc://irc.libera.chat/Warpstock (plain text), or https://web.libera.chat/ (web interface, type #Warpstock into the Channel field).
While visiting the Warpstock website, please consider donating. Warpstock Corporation is a recognized 501(c)3 non-profit organization promoting education, information, and social opportunities to those persons interested in computer operating systems and related software.
As we mentioned previously, the OS/2 VOICE Foundation will be hosting Warpstock Europe 2024 June 7-9 in Rheine, Germany.
VOICE is planning to provide a live video stream via YouTube, though the best Warpstock Europe experience is always in person.
Time is running out to register for Warpstock Europe, however! To register, use this link before May 24. For more information (travel, schedule of presentations, presenters, and more) please visit the Warpstock Europe website.
Don’t miss out on this fantastic opportunity to see, hear, and meet with people directly and indirectly involved with shaping the design and focus of ArcaOS, and working to keep it connected to our ever-changing landscape of information technology.
The OS/2 VOICE Foundation is pleased to announce that the working schedule for Warpstock Europe 2024 is now online. Warpstock Europe will be held June 7-9 in Rheine, Germany.
The event will be held in Hotel Lücke (the hotel’s site is available in English and German). Presenters and attendees should register with the hotel for sleeping accommodations. The discounted room rate for Warpstock Europe attendees is €104 per night, which includes breakfast.
VOICE is planning to provide a live video stream via YouTube, as well. Of course, the fullest Warpstock Europe experience is in person, where you have the ability to interact with presenters and other like-minded people. Please see the Warpstock Europe website for details.
Access for the 3-day event (including 2-course lunch each day) is €215. You may order your Warpstock Europe access through this link before May 24. For travel information and the schedule please visit the Warpstock Europe website.
Among other presenters, Arca Noae Managing Member, Lewis Rosenthal, will be on hand to present and to meet with attendees. Come join the discussion, and learn some new things about ArcaOS!
If you would like to present in person or remotely, please contact the VOICE President, Roderick Klein, via email at president AT os2voice DOT org. There are still presentation slots available, and some others have not yet been confirmed. (Note: Due to strict budget constraints, presenters must also purchase access to Warpstock Europe 2024.)
For over 30 years, the Hobbes repository at New Mexico State University has been a mainstay for OS/2 users to locate software for OS/2, whether freeware, open source, or commercial demos.
This month, Hobbes announced that it would be shutting down as of April 15 of this year. While this truly saddens those of us closely involved with software development for the platform, Arca Noae nevertheless understands the level of resources and commitment required to maintain an ever-growing archive. We applaud the Hobbes archiver and the entire team of faculty, students, and other volunteers who have come and gone over the years, all the while keeping Hobbes up and running for the benefit of all. We are also grateful to the University for its commitment to the archive, providing hardware, software, power, and bandwidth.
We are aware that discussions are underway in the OS/2 community to find a new home for Hobbes. There is a thread on the Warp mailing list at groups.io and another in the OS/2 World forums. You may also read a public announcement from OS/2 VOICE about this here.
At this time, Arca Noae urges caution and advises against more people volunteering to host the main Hobbes repository (though mirrors of a potential new site would likely be appreciated). We remain hopefully optimistic that Hobbes will indeed find a new long-term home and that the transition from New Mexico State University to that new home (wherever it might be) will be a smooth one.
Videos of Warpstock 2023 presentations from earlier this month, including Arca Noae staff and developers featuring the latest ArcaOS news and how-to sessions are now available on YouTube in the WarpEvents channel.
Video topics include:
Arca Noae is pleased to announce the immediate availability of an updated Arca Noae Package Manager for ArcaOS, OS/2, and eComStation. (1.1.0.2)
This is a minor update to the 1.1.0 release with the following bug fixes:
Arca Noae Package Manager is available in English with Spanish, French, Italian, German, Dutch, Russian, and Swedish language packs. Some of these have been refreshed for this release.
ANPM 1.1.0.2 requires WarpIN 1.0.24 or higher for installation. This WarpIN package is available from Hobbes.
This utility is licensed under the GPLv3, and is available to everyone, free of charge. See the included documentation for instructions on how to access the source code.
Please review the wiki for important first-time installation and upgrade notes and other tips.
Arca Noae is pleased to announce the immediate availability of an updated Arca Noae Package Manager for ArcaOS, OS/2, and eComStation. (1.1.0)
This is update includes some major new functionality, enhancements, and bug fixes:
Arca Noae Package Manager is available in English with Spanish, French, Italian, German, Dutch, Russian, and Swedish language packs. Some of these have been refreshed for this release.
The wiki will be updated to include more information regarding the new WarpIN repository configuration.
ANPM 1.1.0 requires WarpIN 1.0.24 or higher for installation. This WarpIN package is available from Hobbes.
This open source utility is available to everyone, free of charge.
Please review the wiki for important first-time installation and upgrade notes and other tips.
Happy New Year!
Recently, we’ve become aware of several ArcaOS licenses being offered for sale on various platforms. This post is a reminder to check the validity of any used license before paying for it.
All ArcaOS licenses are generated by Arca Noae. If you order through one of our authorized resellers, that reseller places an order for your software with us, and we provide the custom ISO for you, registered to an account in your name.
While it is entirely permissible to transfer a license (see paragraph 9 of the ArcaOS End User License Agreement 
), such a transfer must include a hard copy of the license and proof of entitlement. Proof of entitlement means some documentation to prove that the company or individual transferring the license does indeed have the right to do so (it must indeed be registered to that company or individual).
Upon transfer, the transferor must notify Arca Noae of the transfer and provide contact information for the transferee. Without this, it will not be possible to renew support for that ArcaOS license – including a late renewal.
It is worth noting also that only the ArcaOS license is transferable. Support is not. Thus, when an unsuspecting user purchases an existing ArcaOS license and he or she wants to access related downloads for updates or even request an updated ISO, a new ArcaOS Support & Maintenance subscription will be required. The cost of the used license plus new support may be far more than a new license with included support and the ability to renew that support at a discount.
If you are considering the purchase of a used ArcaOS license, be sure to ask for a copy of the registrant’s name, email address, and serial number, and contact us first so that we may be able to determine whether the license is, in fact, legitimate. If it’s not, it will not be valid for purchasing a Support & Maintenance subscription, so technical support, updates, discounted upgrades, and bug fixes will never be available.